steelspan-buildings
Progress Payments on a Commercial Build: How Payment Claims Work
Last Updated: November 9, 2026On most commercial builds, you pay as the work progresses rather than all at the end. That keeps the project funded and moving, and it’s governed by a specific law: the Construction Contracts Act 2002. Knowing how it works means no surprises when an invoice arrives, and no accidental disputes. This post is a general guide, not legal advice. Payment claims A payment claim is a request for payment for work done. To be valid under the Act, it must: Payment schedules: how to dispute a claim If you don’t agree with a claim, you respond with a payment schedule. It must be in writing, identify the claim and state the amount you’ll pay (the scheduled amount, which can be $0). If that’s less than the claim, you must explain how you worked it out and why. Under Steelspan’s terms, a payment schedule must reach us within 5 working days of the claim, and payment is due 5 working days after the claim. What happens if you don’t respond If you don’t provide a payment schedule in time and don’t pay, the claimed amount becomes due. The contractor can then: In other words, ignoring a claim is the one response...
Kitsets Delivered Anywhere in NZ and the Pacific: How It Works
Last Updated: November 9, 2026You don’t need to live near Auckland to get a Steelspan building. We supply engineered steel kitsets anywhere in New Zealand and across the Pacific, and full design & build anywhere in the North Island. Here’s how a kitset gets from our yard to your site. 1. Engineered for your location, not ours Every kitset is designed for the wind, snow and earthquake loads at the site where it will stand. A shed in Canterbury, on the Coromandel coast or in the islands each gets its own engineering. For Pacific sites, the design accounts for local conditions such as cyclone-strength winds and coastal exposure, and for local approval requirements. Pacific engineering is handled by our structural engineers, who are qualified to design for the wind conditions in the islands. Each island has its own regulatory framework, so every project is assessed individually. We most recently supplied Rarotonga, and our team has experience across French Polynesia and up into Micronesia. Talk to us first and we’ll guide you, then confirm the details with our engineers before pricing and scheduling. 2. Drawings and consent You receive drawings and engineering for consent and construction. In New Zealand, your local council handles the building...
Foundations for Steel Buildings: Slab, Piles or Footings?
Last Updated: November 9, 2026The foundations are the part of a building nobody sees and everybody relies on. For a steel portal frame building, they do two jobs: carry the weight down into the ground, and hold the frames down when wind tries to lift or push them over. Here’s how it’s usually done. How a portal frame meets the ground Each portal frame column stands on a steel base plate. It’s normally fixed to the concrete with mechanical anchor bolts, or with threaded rod set into the concrete with chemical anchoring. Where it’s beneficial, we’ll discuss using a cast-in bracket that extends into the floor instead: for example at a firewall for post-fire stability, on a very windy site, or on a very large span. Cast-in brackets take more set-up time, because they have to be secured so they don’t move while the concrete is poured. Most of the load in a steel building is concentrated at those columns, which is why the footings under them are bigger than the rest of the floor. The common options Option What it is Suits Pad footings A block of reinforced concrete under each column Most portal frame buildings, with or without a floor slab Slab...
How to Compare Shed and Steel Building Companies: 10 Questions to Ask
Last Updated: November 9, 2026There are plenty of shed and steel building companies in New Zealand, and most will give you a glossy brochure. The way to tell them apart is to ask the same ten questions of each. Here they are, with our own answers, so you can hold us to them too. # Question Why it matters Steelspan’s answer 1 Is the building engineered for my site? Wind, snow and earthquake loads vary hugely by site Yes, every building is engineer-designed for its specific area and conditions, at the exact spot on your property. On a large site, shielding can differ from one part to another, so we pin down exactly where the building will go 2 Is it a standard plan or designed to my needs? Standard plans force compromises on size, height and doors We design what works for you, using our standardised components and brackets, optimised to give you the best price for the exact layout you need 3 What steel and coatings do you use? Material grade decides durability, especially near the coast New Zealand steel; Z275 galvanised frames; cladding chosen for your environment, with special consideration near the coast or in geothermal areas 4 What’s included, and...
7 Mistakes People Make When Buying a Shed (and How to Avoid Them)
Last Updated: November 9, 2026After 25+ years in the building industry, we’ve seen the same handful of mistakes turn a good shed into a frustrating one. None of them are hard to avoid if you know about them before you order. 1. Going too small The most common regret by far. Sheds fill up. Size for what you’ll own in five years, add working room around everything, and if the budget is tight, ask what an extra bay would cost before you decide against it. 2. Going too low You can add length later, but not height. Measure the tallest thing you’ll ever store, including anything on its roof, and remember that the door mechanism needs room above the opening. 3. Comparing quotes that aren’t the same building Different frame sizes, cladding thickness, doors, engineering and inclusions make quotes impossible to compare at face value. Line them up item by item before you look at totals. If you’re unsure about any item, ask us. With decades in the building industry, we can explain the parts that make up your building. 4. Forgetting the costs outside the kit The slab, site works, drainage, consent fees, delivery, erection and connections can add a large share on...
Can I Build a Kitset Shed Myself? Skills, Tools and Time
Last Updated: November 9, 2026Yes, plenty of people build their own kitset shed, and many enjoy it. A steel kitset arrives with engineered drawings and pre-made components, so you’re assembling rather than designing. But it’s a real building project. Here’s an honest look at what’s involved. Don’t underestimate the job Building a shed can be a lot harder than it looks. You’ll be working at height, lifting heavy components, screwing things together and putting in long days, and high winds can come up out of nowhere. Be realistic about what you can take on. If you’ve built things before and want to give it a go, we’re here to support you, or your builder, through the process. What’s in the kit A Steelspan kitset includes the engineered steel frame, purlins, girts, cladding, fixings and plans, designed for your size and site. Exactly what’s included is listed in your quotation and specification: it might be just the frame and its fixings, the frame plus all cladding and fixings, or a full kit with doors, PA doors and windows. The skills you need If you’ve built a deck or a fence to a high standard, you’ll recognise most of it. You may need to hire gear...
What Happens After You Say Yes: The Steelspan Process from Quote to Handover
Last Updated: November 9, 2026Most of the stress in a building project comes from not knowing what happens next. So here is exactly how a Steelspan design & build project runs, step by step. Kitset orders follow a shorter path, covered at the end. 1. Enquiry You get in touch through our Easy Shed Quote, by phone or by email. Your enquiry is logged and assigned to one of our sales leads, Patrick or Oliver, who stays your main contact through to handover. 2. Site visit and measure We visit, measure up, take photos (often with a drone) and talk through how you’ll use the building. Seeing the site early flags access, slope and drainage before they become surprises. The drone is particularly useful near an existing building, or for inaccessible parts of the site, such as a drop-off or a boggy area. A site visit isn’t needed for every project. We supply many kitsets around the country without ever seeing the site. What matters is enough information: photos, a Google pin with the exact location, a geotech report if you have one, and the heights of equipment going in. A visit can still help if you’re short on time and want us to...
Meet the Team: 25+ Years of Steel Buildings at Steelspan
Last Updated: November 9, 2026Steelspan is a family-owned business, not a franchise. When you call us, you talk to the people who design, price and deliver your building, and who can make a real difference to your price and how your project is delivered. We’re not bound by rules someone else wrote that we can’t change, so we can adapt things to bring your project to life within your budget. Here’s who we are. Our story Steelspan is just over 10 years old. Patrick started the company after decades in the steel frame building market, wanting to run his own business and create a future for his sons. Both sons have since joined the company, and Steelspan is still a family business. Today we bring 25+ years of experience in the New Zealand building industry. We’ve supplied 36,000 m² of buildings and maintained or repaired more than 100,000 m² more, for farmers, lifestyle owners, businesses and clients including Watercare, Ports of Auckland, the NZ Navy and Auckland Airport. The team Patrick Whiteman, Managing Director. 25+ years in the building industry. Patrick genuinely enjoys making a difference and seeing clients succeed, getting their project over the line on time and on budget. Our success is...
We’ve Moved: Steelspan’s New Home in Karaka
Last Updated: November 9, 2026Steelspan has a new home. As of October 2026, we’ve moved from 19 Tironui Road in Takanini to 281 Linwood Road, Karaka. Why we moved Karaka gives us genuine access to both rural and city markets, and it’s easy for clients to reach. It also helps us keep overheads as low as we genuinely can, so our pricing stays competitive, while giving us enough yard space and covered space to serve our clients well. What stays the same Visiting us Visitors are welcome. You can book an appointment, or drop in during our normal hours, when the office is staffed. Our hours are on Google Maps. Karaka is a short drive from Papakura, Drury and Pukekohe, handy for the Awhitu Peninsula and Waiuku, and easy to find for clients across South Auckland and the Waikato. Got a project in mind? Whether it’s a farm shed, a lifestyle barn or a commercial building, the first step hasn’t changed. Use our Easy Shed Quote or give us a call.
Steel Shed Maintenance Checklist: What to Wash and Check Each Year
Last Updated: November 9, 2026A steel building doesn’t need much, but it does need something. A couple of hours a year keeps cladding looking good, protects your material warranties and catches small problems before they become leaks. Here’s the checklist we’d follow. Wash the areas rain doesn’t reach Rain keeps roofs clean, but it doesn’t reach everywhere. Salt, dust and grime build up in sheltered spots, and that’s where corrosion starts. Manufacturers call these unwashed areas: Manufacturers’ guidance is to wash wall cladding manually every 3 to 12 months, depending on the environment and paint system, and unwashed areas more often: about every 3 to 6 months in milder conditions, down to monthly in the harshest. Use water with a sponge or a soft nylon brush. If you use a water blaster, keep it at no more than 20 MPa. Every few months Once a year After any work on the roof Drilling and cutting leave metal filings (swarf) that rust and stain the paint. Sweep or brush them off straight away. Make sure any new pipes, flues or fixings are compatible with the cladding. Keep a record Note the date you washed or checked the building, with a photo. If you ever need...
Stopping Condensation in a Steel Shed
Last Updated: November 9, 2026You walk into the shed on a cold, clear morning and the roof is dripping onto the ute, the workbench and the hay. It isn’t a leak. It’s condensation, and it’s one of the most common complaints about steel buildings. The good news is it can be designed out. It matters most when the work inside can be damaged by drips: timber furniture making, kitchen manufacturing where MDF or chipboard carcasses swell when wet, or vintage car restoration, where a drip can mark a finished panel. Why it happens On a clear night, a steel roof loses heat to the sky and can get colder than the air around it. Warm, moist air inside the shed touches the cold underside of the roof sheet and drops its moisture as water droplets. Once enough builds up, it drips. Where the moisture comes from The fixes 1. Stop moisture at the source. A vapour barrier (damp-proof membrane) under the slab is the cheapest condensation control there is, but it has to go in before the concrete. Avoid unflued gas heaters, and let wet gear drip outside where you can. 2. Put something between the moisture and the cold steel. Options include: 3....
Built for NZ Weather: Wind Zones, Snow and Earthquake Loads Explained
Last Updated: November 9, 2026Two identical sheds can need very different frames. One sits in a sheltered valley; the other is on an exposed ridge above the coast, or in the high country where snow settles on the roof. New Zealand’s weather and ground vary so much that a one-size-fits-all shed is either overbuilt for most sites or underbuilt for some. That’s why every Steelspan building is engineered for its own site. Wind Wind is usually the load that decides a lightweight steel building’s frame, fixings and footings. The engineer works out the design wind for your exact site using the loading standard for wind actions. It depends on: For smaller timber-framed buildings, you’ll also see wind zones, from low to extra high. A site’s wind zone affects whether some consent exemptions apply. Snow In snow areas, the roof has to carry the weight of settled snow, which depends on the region and the site’s altitude. Steeper roofs shed snow better, and the frame and purlins are sized for the load. Earthquakes Earthquake loads depend on the site’s seismic hazard, the ground conditions and the building’s weight. Steel sheds are light, so wind often governs the frame, but the engineer checks both. Heavy mezzanines,...
Pre-Painted, Zinc-Aluminium or Galvanised Steel: Which Finish Goes Where?
Last Updated: November 9, 2026Most steel buildings in New Zealand use three types of coated steel, often all on the same building. Knowing which is which helps you read a quote and pick the right finish for your site. The three finishes Finish What it is Where it’s used Look Galvanised Steel with a zinc coating Frames, purlins and girts; Steelspan uses Z275, a 275 g per m² zinc coating Dull grey Zinc-aluminium coated Steel with an aluminium and zinc alloy coating Unpainted roof and wall cladding, especially on farm and utility buildings Bright silver, dulling with age Pre-painted Steel with paint layers over a metallic coating Roof and wall cladding where colour, looks or extra durability matter Wide colour range Unpainted or pre-painted? Unpainted zinc-aluminium coated steel is usually the cheaper cladding option and is common on farm sheds and utility buildings. It’s tough, but it has limits: some environments and some contact with other materials don’t suit it, so check the manufacturer’s guidance for your site and use. Pre-painted steel costs more, but you choose the colour, and the paint adds a layer of protection. On lifestyle blocks and commercial sites, colour is often non-negotiable. Near the coast, the higher-grade pre-painted products...
Building Near the Coast: Corrosion Zones, Steel and Cladding
Last Updated: November 9, 2026Salt is steel’s biggest enemy, and New Zealand has a lot of coastline. A shed that would last decades inland can corrode far sooner beside the surf if it’s built from the wrong materials. The fix isn’t to avoid steel near the sea. It’s to match the materials, fixings and maintenance to how close you are. How far are you from the surf? Steel manufacturers group sites into environmental categories for their pre-painted products. A typical guide looks like this: Category Typical location Conditions Moderate About 500–1000 m from breaking surf, or near calm salt water such as estuaries. Most of New Zealand Little or no salt deposit, occasional salt smell Severe About 100–500 m from breaking surf on exposed coasts Light salt deposits, frequent salt smell Very severe and extremely severe Right on the shoreline, beside surf, jetties and wharves Heavy salt deposits, constant salt smell Salt can travel further inland with strong prevailing winds, and anything within 100 m of salt water needs the manufacturer to confirm the warranty. Calm harbours are gentler than surf beaches, which is why estuary sites can sit in the moderate category. Choosing the cladding Manufacturers make several grades of pre-painted steel with...
Guarantee vs Durability: What a Shed Warranty Really Covers
Last Updated: November 9, 2026A big number on a guarantee is an easy thing to sell, and an easy thing to buy. But a guarantee doesn’t make a building last. Materials chosen for the site, sound design and regular maintenance do. Here’s how to read a shed warranty, and what to look for instead. Who actually warrants what Most shed warranties are a combination of three things: A single “guaranteed for X years” headline usually bundles these together. Ask which part each number applies to. Read the conditions Material warranties are tied to conditions, and the conditions matter as much as the length: Why durability beats a headline A warranty is a promise to fix or pay if something fails within the terms. Durability is the building not failing in the first place. You get durability from: The Building Code also sets the floor: structural elements must last at least 50 years, and cladding at least 15, with normal maintenance. Questions to ask any supplier Talk to Steelspan Ask us which materials and warranties suit your site, and we’ll give you a straight answer. Use our Easy Shed Quote or call 0800 787 726.
How Long Does a Steel Shed Last?
Last Updated: November 9, 2026A well-designed steel building, made with the right materials for its site and looked after, will serve you for decades. How many decades depends less on the brand on the quote and more on four things: the materials, the environment, the design details and the maintenance. What the Building Code requires The Building Code’s durability clause, B2, sets minimum lives for building elements, assuming normal maintenance: Element Minimum durability Structure, and parts that are difficult to reach or replace 50 years Parts that are moderately difficult to reach or replace, such as roof and wall cladding 15 years Parts that are easy to reach and replace 5 years Manufacturers state that pre-painted steel products, correctly installed and maintained, meet or exceed the 15-year B2 requirement for roofs and walls. Those are minimums, not life expectancies. 1. The materials Steelspan frames, purlins and girts are galvanised steel to Z275, meaning a zinc coating of 275 g per m², and our buildings are made with New Zealand steel. The zinc protects the steel underneath, and slowly weathers away instead of the steel. A thicker or more advanced coating lasts longer in harsh conditions, which is why cladding is chosen to suit the...
Steel vs Timber Pole Sheds: An Honest Comparison
Last Updated: November 9, 2026Timber pole sheds have been part of the New Zealand farm landscape for generations, and plenty are still going strong. Steel portal frame buildings have taken over much of the market because they span further and don’t rot. We build in steel, but we’ll give you a fair comparison, including where a pole shed still makes sense. How they’re built A pole shed uses treated timber poles set into the ground, with timber purlins and girts carrying the roof and wall cladding. A steel portal frame building uses steel columns and rafters, bolted to concrete footings, with steel purlins and girts. The roof and wall cladding is usually steel on both. Side by side Steel portal frame Timber pole shed Clear span Wide spans with no internal posts (Steelspan up to 30 m) Shorter spans, so wider sheds need poles inside Rot and insects Steel doesn’t rot, shrink or get borer Treated timber lasts well, but in-ground poles are the weak point over time Straightness Factory-made to tight tolerances Timber varies and can twist or move as it dries Fire Steel is non-combustible Timber burns Birds Box steel purlins give birds fewer places to perch, and can be designed...
Plant Rooms and Equipment Buildings: Steel Buildings for Infrastructure
Last Updated: November 9, 2026Some buildings exist to protect equipment rather than people or stock: pump stations, blower and UV buildings at treatment plants, generator shelters, switch rooms and electrical housings. They look simple from the outside, but they carry requirements most sheds never face. Steelspan has delivered this kind of building at water and wastewater treatment plants and at a naval base, including blower and UV buildings, pump plant buildings and generator roofs. We’ve also built specialist buildings for collecting and storing blood products and waste products, and dedicated electrical enclosure buildings. Importance level The structural loading standard sorts buildings by the consequences of failure. A farm shed is usually importance level 1, an ordinary building level 2. Buildings that house essential services can sit higher, which means stronger design loads for wind and earthquake. Confirm the importance level with the asset owner and engineer at the start, because it drives the frame, footings and cost. Steelspan designs to importance level 3, which is often required for the council infrastructure buildings we provide, and we have a track record of IL3 buildings across a number of sites. Heat and ventilation Pumps, blowers, generators and switchgear give off heat. The building needs enough ventilation,...
Extending an Existing Building: New Bays, Lean-tos and Matching the Old
Last Updated: November 9, 2026Often the best new building is an extension to the one you already have. You reuse a wall, keep everything under one roof and avoid a second set of footings and services. Done well, nobody can tell where the old building ends. Done badly, it can leak at the join for the rest of its life. Just as common, the dimensions don’t match: a slightly different roof pitch or height makes the add-on look obvious and out of place next to the original. We work hard to make extensions marry in with the existing building. We extend buildings by other suppliers as well as our own. Three ways to extend Check the existing building first An extension can put new loads on the old structure. A lean-to hangs off the existing columns, and joining two buildings changes how wind acts on both. Attaching to an existing building relies on it having the capacity to take the join. That means the strength of the beams and columns you’re connecting to, and also whether the concrete foundations beneath them can carry the extra loads. An engineer should check that the existing frame, foundations and bracing can take it. On older buildings, the...
Hobby Sheds and She Sheds: Small Steel Buildings With a Purpose
Last Updated: November 9, 2026Not every shed is about machinery. A small, well-built steel shed can be an art studio, a home gym, a potting shed, a hobby workshop or simply somewhere to get away. The difference between a box and a room you love is in the details. Use the 30 m² exemption wisely A single-storey detached building up to 30 m² can be built without building consent, if it meets every condition: Under 10 m², there’s no boundary distance at all. The district plan still applies, so check your zone’s rules. See our consent post for the details. Light makes the room Windows, a glazed door or roof skylights turn a dark box into a space you’ll use. Think about which way the windows face, and where the sun falls when you’ll be in there. Comfort Insulation and lining make a small shed usable year-round and stop condensation dripping off the roof. Lined walls are also easier to hang shelves, art or gym gear on. Power Lights, sockets and a heater make a hobby shed far more useful. Electrical work must be done by a licensed electrician. Running power from the house is easier to plan before the shed goes up. Looks...
Aircraft Hangars: Sizes, Doors and Consent
Last Updated: November 9, 2026A hangar is a simple idea, a big open box with a big door, but the details are unforgiving. A few hundred millimetres too narrow and the aircraft doesn’t fit, and the door is the most demanding part of the whole structure. Here’s what to plan for. Size it to the aircraft, plus room Start with the aircraft’s wingspan or rotor diameter, its length and its tail height, then add clearance on every side for safe towing and for walking around it. As a guide, a Cessna 172 has a wingspan of about 11 m, and a Robinson R44 helicopter has a main rotor about 10 m across. If you might upgrade, or share the hangar, size for the bigger aircraft. Clear span is essential A post inside a hangar is a wingtip strike waiting to happen. Steel portal frames give a column-free floor. Steelspan designs clear spans up to 30 m. We’ve been involved with many hangars over the years, most recently an 18 m × 18 m hangar, 5 m high, with a fully opening 18 m front. The door is the hard part The main door often spans most of the front of the building, which means...
Mezzanine Floors in Sheds and Commercial Buildings: Timber, Steel or Concrete?
Last Updated: November 9, 2026A mezzanine is a part floor built inside a tall building. It’s one of the cheapest ways to add usable space, because the roof and walls are already there. But it’s a structure in its own right, and getting the design right starts with what it will carry. Every mezzanine must be engineered All mezzanine floors need engineering design. The floor has to be strong enough for the load it will carry. It also has to be braced so that, with that load on it, it resists an earthquake without collapsing onto people below or damaging the building. What’s it for? Each use has a different design floor load under the loading standard, and the engineer designs the structure, connections and footings for it. Tell us the real use. A floor designed for an office isn’t designed for pallets of stock. Floor loads: from light storage to commercial In a rural building used for occasional storage, a mezzanine can be designed quite light, based on the weight and how it’s spread across the floor. In a commercial building, the engineer will design to a floor load rating in kilopascals (kPa). That usually starts at about 2.5 kPa and is often...
Canopies and Covered Loading Areas for Commercial Sites
Last Updated: November 9, 2026A canopy is one of the most useful things you can add to a commercial site. It keeps goods dry while trucks load, shelters equipment and outdoor storage, and turns a wet yard into usable working space. Because it’s open, it behaves differently from an enclosed building, and that shapes the design. Common uses We’ve designed and installed a roof over an existing 250 kVA generator, and a fully enclosed loading building on a busy commercial site. Clearance for trucks The standard maximum height for heavy vehicles on New Zealand roads is 4.3 m. Allow for that plus a margin, and remember that tipping trucks, raised loaders and forklifts with masts extended may need more. The lowest point of the frame, not the ridge, is what matters. Wind uplift An open canopy catches wind from underneath, which tries to lift the roof off. Canopies often need bigger footings and hold-downs than you’d expect for a light roof. That’s an engineering job, not something to guess. Freestanding or attached? Attaching a canopy to an existing building can save columns, but it adds load to the existing frame and changes how it handles wind. The existing building needs to be checked by...
Warehouse Design That Can Grow With Your Business
Last Updated: November 9, 2026Most businesses build a warehouse for the volume they have today and outgrow it within a few years. The cheapest expansion is the one you planned for at the start. Here’s how to design a warehouse that can grow without starting again. Height is the cheapest space Racking turns height into storage, so clear height under the frame is worth more than it looks. Work out the racking you’d use at full capacity, including any sprinkler clearance if your fire design needs sprinklers, and set the eave height to suit. Before you go tall, factor in the equipment that comes with height. Your forklift has to reach the top racks, and replacing or hiring one that can is often expensive. Racking must also be big and strong enough to hold the loads at those heights, and may need its own seismic design. Weigh all of these costs when choosing height for storage. Design the slab for the future Racking legs and forklifts put concentrated loads on the floor. Design the slab for the heaviest racking and forklifts you’re likely to use, not just today’s pallet jack. Thickening a slab later is close to impossible. Keep the floor clear A clear-span...
Hay Barns: Keeping Feed Dry (and Safe) Through NZ Weather
Last Updated: November 9, 2026Hay and baleage are a big investment, and rain, ground moisture and sun can strip value from them quickly. A well-designed barn keeps feed dry and accessible. It also reduces one of the less-talked-about risks on a farm: hay fires. Size it for a good season Work out how many bales you’d want to store after a good season, not an average one, then add room for a loader to work. Clear span helps here: bales can go wall to wall, and loaders don’t have to dodge posts. Height for stacking Stacking height depends on your loader’s reach and your bale type. Set the clear height under the frame to suit the top of a full stack plus the loader, and check the door or open-bay height too. Open sides or walls? An open-sided barn is cheaper and quick to load, but wind-driven rain wets the outer bales. Cladding the walls facing the prevailing weather, and leaving the sheltered side open, is a common middle path. Generous roof overhangs help keep the edges dry. Keep it off the ground Ground moisture wicks into bottom bales. A raised, well-drained floor of concrete or compacted hardfill, with water directed away from the...
Commercial Storage Units as an Investment: What to Plan Before You Build
Last Updated: November 9, 2026Storage units are a simple building type with a simple business model: build once, rent many times. Steel suits them well, because the buildings are repetitive, low-maintenance and easy to extend. But the money is made or lost in the planning, long before the first roller door goes up. Start with the unit mix Who will rent the units? Households storing furniture, tradespeople storing tools and materials, small businesses storing stock and boat or caravan owners all want different sizes and access. A mix of small, medium and large units usually lets out better than all one size. Most storage developments we’ve built across New Zealand use two standard sizes: 3 m × 3 m units and 6 m × 3 m units (double the size). Owners then vary how many of each go on site to suit the local area and the demand they expect. We can build any size in between, and larger units such as 6 m × 12 m for small workshop use. Layout and access Doors and partitions Every unit needs a door that’s robust, secure and easy to use. Plan door sizes to suit the vehicles your tenants will use. Partitions can be as...
Designing a Workshop Shed: Power, Light, Insulation and Mezzanine
Last Updated: November 9, 2026A storage shed only has to keep things dry. A workshop has to be a good place to spend a Saturday or a working week. That means thinking about the floor, power, light, temperature and air before the building is designed, not after it’s up. The floor A power-floated concrete slab is the standard for a workshop: easy to sweep, roll trolleys on and bolt machines to. If you’re planning a car hoist or heavy machinery, the manufacturer will specify a minimum slab thickness and strength, so tell us before the slab is designed. A slight fall towards the door helps if you’ll wash down. Power Light Roof skylights give free daylight across a deep building. Add good LED lighting for winter evenings, and task lights over the bench. Insulation and linings Uninsulated steel sheds can be cold in winter, hot in summer and prone to condensation dripping from the roof. Roof insulation and an anti-condensation layer make a workshop far more comfortable. Lining the walls protects the cladding from knocks and gives you somewhere to hang tools. When we line a Steelspan building, the ply can be screwed directly to the steel, and your shelving and hooks then screw...
Picking the Right Site for Your Shed: Access, Slope, Ground and Orientation
Last Updated: November 9, 2026Where a shed goes affects its price, how well it works and how long it lasts. A site that looks perfect from the house can turn out to be soft, wet, steep or unreachable for a truck. Walk the site with this list before you commit. 1. Can a truck get there? Your kitset arrives on a truck, and a slab needs a concrete truck. Check the driveway width, gates, overhead power lines, tight corners, soft paddocks and steep grades. If a big truck can’t reach the site, delivery and concrete get dearer. 2. What’s the ground like? Soft ground, filled ground, peat and some clay soils need specific foundation design. If the ground is unknown or looks suspect, a geotechnical report is cheap insurance against foundations that crack or settle. 3. How steep is it? Flat is cheapest. A sloping site needs cut and fill, possibly retaining walls, or a stepped floor. A few metres sideways can sometimes halve the earthworks. 4. Where does the water go? Avoid low spots and gullies where water collects. Check your council’s maps for flood plains and overland flow paths. Plan where the roof water will go, too: a large roof sheds a...
Choosing Doors for Your Shed: Roller, Sectional, Sliding or Open Bays
Last Updated: November 9, 2026Doors are one of the biggest single items on a shed quote, and the choice affects the wall height, the frame and how the building behaves in a storm. Here’s how the main options compare. The options Door type How it works Suits Watch for Roller door A curtain of steel that rolls up onto a drum above the opening Most sheds and workshops; quick, simple and good value Needs headroom above the opening for the drum Sectional door Insulated panels that run up on tracks under the roof Workshops, showrooms and heated spaces; better seal and insulation Needs track space inside, so check against lights and mezzanines Sliding door Large panels on a top track that slide sideways Barns, hay sheds, very wide openings, low-headroom buildings Needs clear wall beside the opening, and good seals for weather Open bay No door at all Farm machinery and hay storage where quick access matters Weather, dust, birds and security; the frame is designed for open-sided wind loads Access door A standard hinged door for people Every building; often required as an exit in commercial buildings Position for fire rules and everyday convenience Doors and wind In a strong wind, a big...
Lifestyle Block Sheds: Workshop, Storage, Boat and Caravan in One Building
Last Updated: November 9, 2026On a lifestyle block, the shed does a lot of jobs. It’s the garage for the farm ute, home for the boat or caravan, the workshop, the feed store and the place everything else ends up. One well-planned building can do all of it, as long as each job gets the space and access it needs. Zone the building Think of the shed as a set of zones, each with its own door: Doors and access Different bays can have different door heights. A tall roller door for the boat bay, standard doors for vehicles and a separate access door for the workshop means you aren’t opening a big door just to grab a spanner. Leave room in front of every door to turn a trailer. Comfort and condensation Wet vehicles and boats bring moisture in, and a cold steel roof can drip it back down. If you’ll spend time in the workshop or store things that don’t like damp, plan in roof insulation or an anti-condensation underlay. Our condensation post explains the options. Looks matter on a lifestyle block The shed is often the second-biggest building on the property, and it’s in your view every day. Pre-painted steel comes...
Designing a Farm Implement Shed Around Today’s (and Tomorrow’s) Machinery
Last Updated: November 9, 2026A good implement shed protects expensive machinery from sun, rain and salt air, and makes the daily job easier. A poorly planned one becomes a puzzle you solve every morning: move the ute to get the tractor out, then unhitch to fit the mower back in. The difference is all in the planning. Start with a machinery list Measure everything that will live in the shed, in the position it’s stored: Then add anything you’re likely to buy in the next ten years. Machinery tends to get bigger, not smaller. Clear span earns its keep Internal posts are the thing farmers complain about most in old sheds. They limit turning, block wide implements and get hit. A clear-span steel shed puts the whole floor to work. Steelspan designs clear spans up to 30 m, without internal posts or knee braces. Think about how machines move Open front or doors? Open-front bays are cheaper and make access quick. Doors keep out driving rain, dust, birds and thieves. Many farmers mix the two: open bays for tractors and implements, a lockable bay for the workshop, tools and the quad bike. An open-front shed catches wind differently from a closed one, and the...
Clear Span Explained: No Internal Posts, No Knee Braces, up to 30 m
Last Updated: November 9, 2026A clear-span building has no posts or columns inside. The roof is carried by steel frames that span from one wall to the other, so the whole floor is yours to use. It’s the single biggest difference between a modern steel building and a traditional pole shed, and it’s what Steelspan builds every day, with clear spans of up to 30 m. How a portal frame works Each frame is a pair of columns joined to a pair of rafters. The joints at the eaves (the “knees”) and at the peak are rigid, so the frame resists wind and earthquake loads by bending, rather than leaning on posts in the middle. Bracing in some of the wall and roof bays then keeps the building stable along its length. Steelspan frames are cold-formed Z275 galvanised steel with bolted knee connections. Our clear-span portals don’t use internal knee braces or apex braces, the diagonal members you see in the corners of many sheds, so you keep more usable height near the walls. Where clear span pays off Think about the future too. A fruit packhouse might have conveyor belts and sorting tables laid out around its columns today. When the owner later...
How High Should Your Shed Be?
Last Updated: November 9, 2026Getting the height right “How high should it be?” is one of the first questions we work through with every client, and it is one of the hardest to change once the building is up. The short answer: high enough for what you want to do in it now and later, and no higher than your site, your budget and the rules allow. Height affects how the building looks, what it costs, what fits through the door and what you can do inside. Here is how I walk clients through it. 1. Start with how it will look on your site Before we talk numbers, think about the look you are after when you drive in the gate. A building’s height is always judged against what is around it: your house, an existing shed, the lie of the land. Adding on to an existing shed. Here the heights are critical, and they are all set from floor level. Your new concrete floor either matches the existing one or has a deliberate step up or down. If you want the roof lines to match, the new building takes the same height as the old one. A standalone building. Ask yourself whether...
What Size Shed Do I Need? A Practical NZ Sizing Guide
Last Updated: November 9, 2026The most common regret with any shed is “I wish I’d gone bigger”. The cheapest time to add space is before the building is designed. Size the shed for what you’ll own in five years, not just what you own today. Step 1: List what goes inside Write down everything that will live in the shed, and everything that will happen in it, then measure it. Don’t guess. A machine with a turning circle, an arm that swings out or a working area needs that space allowed for, not just its parked size. If you want certainty, we’re happy to come to your site, take measurements and draw it up for you. It’s better to get it right now than end up with a building that’s too small or doesn’t work. Step 2: Add working room Stuff in a shed needs space around it. Allow room to open vehicle doors fully, to walk around everything, and to work at a bench without backing into the ute. For tractors and loaders, allow turning room inside, not just parking room. This is where clear span earns its keep: with no internal posts, the whole floor is usable. Step 3: Think in bays...
How Long Does a Commercial Building Consent Take, and How Do You Avoid Delays?
Last Updated: November 9, 2026By law, a council has 20 working days to grant or refuse a building consent once it receives a complete application. In practice, many commercial consents take longer, because the clock stops every time the council asks for more information. The good news is that most delays are avoidable. How the clock works Where delays usually come from How to avoid them After the consent During construction, the council inspects at set stages, and contractors provide construction producer statements (PS3) with engineers’ observation statements (PS4) where required. When the work is finished, you apply for a code compliance certificate, which the council also has 20 working days to decide. Keeping inspection records and producer statements organised as you go stops this last step dragging on. How Steelspan keeps consents moving On design & build projects, our detailed design stage pulls together the engineering, fire, H1, drainage and geotech before we lodge. We handle the council’s questions, and during construction our project manager makes sure every inspection and producer statement is collected for the code compliance certificate. Every commercial consent is different, so we’ll give you a realistic timeframe for your project. Talk to Steelspan Planning a commercial building and working...
Insulation (H1) Rules: When a Shed or Commercial Building Needs Them
Last Updated: November 9, 2026H1 is the part of the Building Code that deals with energy efficiency: how well a building holds heat, through insulation, glazing and airtightness. For houses, it’s well known. For steel commercial and industrial buildings, the key question is simpler: which parts of the building will be heated or cooled? Conditioned vs unconditioned space The H1 documents use two terms that matter here: In a typical warehouse or workshop, the big open floor is often unconditioned, while the office, showroom, lunchroom or a temperature-controlled area is conditioned. H1 requirements focus on the conditioned parts, so the layout decides a lot of the cost. Which compliance path applies Your designer confirms the classified uses and which path applies. This affects insulation levels in roofs, walls and floor slabs, window performance, and in larger buildings, lighting power. What it means in practice Insulating a steel building Steel buildings insulate well when it’s planned. Roofs can take insulation blankets under the cladding, walls can be lined with insulated systems, and slab edges can be insulated where required. Planning it at the design stage is far cheaper than adding it later. How Steelspan approaches H1 We work out conditioned and unconditioned areas at the...
What the 2026 Building Amendment Bill Means for People Building
Last Updated: November 9, 2026New Zealand’s building rules are going through their biggest change in about 20 years. Alongside the consent exemptions for small sheds that came in during October 2025, a Building Amendment Bill was introduced to Parliament in mid-2026. Here’s what it proposes and what it could mean if you’re planning a farm, lifestyle or commercial building. This is a moving scene. This post reflects the Bill as introduced, and it may change before it becomes law. What the Bill proposes Proportionate liability. At the moment, if a building turns out to be defective, one party can end up paying for everyone’s share of the fault. The Bill would change this so each party pays the share that matches its contribution. Mandatory insurance for designers. Designers such as architects and engineers would have to carry professional indemnity insurance. Home warranties. New houses, smaller multi-unit buildings and larger consented renovations would need warranty cover: at least 1 year for defects and 10 years for structural defects. This applies to residential work, not sheds or commercial buildings. Faster PIMs. Councils would have to process project information memorandums in 10 working days instead of 20. A fast track for some homes. Eligible homes with solar...
Fire Rules for Commercial Steel Buildings, in Plain English
Last Updated: November 9, 2026Fire design is one of the biggest reasons commercial buildings change shape between first sketch and consent. Put a warehouse close to a boundary and the wall facing it may need to be fire-rated, with few or no openings. Knowing the basics early saves redesigns and money. The rules in one paragraph The Building Code’s fire clauses (C1 to C6) set what every building must achieve. For most buildings other than houses, the usual way to show compliance is the Acceptable Solution C/AS2, currently the 2nd edition, in force since 28 July 2025. Complex or unusual buildings may instead use the Verification Method C/VM2, which needs a chartered fire engineer and specialist modelling. Five ideas that drive the design 1. The relevant boundary. Fire rules care about how far each wall is from the boundary it faces. The closer the wall, the stricter the rules, because fire can spread to the neighbour’s property. 2. Two buildings on one site. If you’re adding a second building on your own land, the rules draw an imaginary “notional boundary” halfway between them. A new shed 3 m from your existing garage is treated as being 1.5 m from a boundary. 3. Unprotected area....
Building Consent vs Resource Consent: Height, Boundaries and Site Coverage
Last Updated: November 9, 2026People often use “consent” to mean one thing. In New Zealand there are two, and they ask different questions. A building consent asks whether the building will be built safely and properly. A resource consent asks whether the building or activity is allowed where you want it, given the effects on neighbours and the environment. You might need neither, one, or both. Building consent: how it’s built A building consent is issued under the Building Act 2004. The council (as building consent authority) checks your plans against the Building Code: structure, fire safety, weathertightness, durability, access and energy efficiency. Once it’s granted, the work is inspected as it goes, and you finish with a code compliance certificate. Resource consent: where and what A resource consent is about your council’s district plan, made under the Resource Management Act (which the government is replacing with new planning laws). The plan sets rules for each zone. Common rules that catch sheds and commercial buildings are: If your building meets every rule, it’s a permitted activity and no resource consent is needed. If it breaks one, you’ll need resource consent for that part. Which comes first? You can apply for both at the same...
Consent-Exempt Farm Sheds up to 110 m²: What Actually Qualifies
Last Updated: November 9, 2026New Zealand lets farmers build some pole sheds and hay barns up to 110 m² without building consent. It’s a useful rule, but it’s narrower than most people think. The condition that rules out most modern farm sheds is a 6 m limit on unsupported roof span. The full list of conditions To be exempt, the shed has to meet every one of these: “Rural zone” is narrower than “in the country” The exemption uses your council’s zoning, not how the property looks. A lifestyle block zoned rural-residential or countryside living usually doesn’t count, even with stock in the paddock. Check the zone on your council’s district plan maps before you plan around the exemption. The 6 m span limit This is the condition that matters most. A traditional pole shed with a row of poles down the middle can keep every span under 6 m. A clear-span shed, with no posts inside, usually can’t, because a useful implement or hay shed is normally deeper than 6 m. That’s a real trade-off. Internal posts cost you turning room for machinery and get hit by tractors and loaders. For many farmers, the open floor is worth the consent. If staying exempt...
Do I Need Building Consent for a Shed in NZ? The 2026 Rules
Last Updated: November 9, 2026Short answer: small sheds often don’t need building consent, but most of the buildings people come to us for do. New Zealand’s Building Act lists work that doesn’t need consent in Schedule 1, and three of those exemptions cover sheds. Each comes with conditions, and missing one condition means you need consent after all. Even when a shed is exempt, it still has to meet the Building Code and your council’s district plan. “No consent” never means “no rules”. The rules by size Shed size Consent needed? Main conditions Up to 10 m² Usually no Single storey, no plumbing or drinking-water storage. Since 23 October 2025 there is no minimum distance from the boundary. Over 10 m², up to 30 m² Usually no, if built one of three ways At least 1 m from any boundary or house (eased on 23 October 2025). No more than 3.5 m high above the floor. No plumbing or drinking-water storage. Must be a kitset designed or checked by a chartered professional engineer, built or supervised by a licensed building practitioner, or a lightweight DIY build to the B1/AS1 solution. Rural pole sheds and hay barns, up to 110 m² Usually no, if every...
How to Read and Compare Shed Quotes Like for Like
Last Updated: November 9, 2026When two quotes for the “same” shed are thousands of dollars apart, they’re almost never for the same shed. One might have heavier frames, thicker cladding or more doors. The other might leave out engineering, consent or delivery. Use this checklist to line them up properly before you compare totals. 1. The building itself Is it truly clear span? Check that the main portal frames are clear from side to side and full height. Some designs use large diagonal braces at the knees, or an apex tie running horizontally between the rafters near the top of the roof. These braces triangulate the joints so a lighter, cheaper frame can be used, but they take up usable space inside the shed. Make sure they suit what you plan to do in the building. If your quote doesn’t make it clear, ask, or send it to us and we’ll compare it for you. Steelspan prices full clear-span portals as standard, and you’ll see that almost all the buildings on our website are clear span. If we do include braces, it’s stated on the quote. Occasionally, on a tight budget or in a very high wind or snow area, an apex brace can...
The Costs People Forget: Foundations, Site Work, Consent and Cartage
Last Updated: November 9, 2026The building price is the number everyone remembers. The total is what you pay. Between the two sit a set of costs that most quotes, including ours, list as exclusions unless you ask for them to be included. None of them are hidden if you know to look, so here’s the list. Before anything is built Getting the site ready Under and around the building Getting it up Finishing off Changes along the way Changing the design after the price is agreed costs money, because drawings, engineering and orders change too. Steelspan’s terms charge a variation administration fee of $150 + GST or 5% of the variation, whichever is greater. The best way to avoid variations is to settle the design properly before construction starts. How we keep surprises out Our policy is no surprises: we do what we say we’re going to do. On design & build projects, a detailed design stage prices the site works, slab and services before you sign a construction contract. On kitset orders, we’ll tell you which of these items you need to organise yourself. As a rule of thumb, allow a 5% contingency on any project for small variations. On commercial projects, 10%...
Pole Shed vs Steel Portal Frame: The Real Cost Comparison
Last Updated: November 9, 2026If you compare a pole shed and a steel shed on the kit price alone, you’re comparing the wrong thing. The cheapest kit can turn into the dearest building once the holes, labour, doors and years of use are added in. Here’s how to compare the whole job. Compare these line by line Cost item What to ask The kit Is it engineered for your site’s wind and snow, or a standard design? Foundations Pole holes and concrete, or footings and a slab? Who digs and pours? Floor Slab, hardfill or dirt? A slab is often extra on both types. Labour How many days to build, and by whom? Who supplies the crane or hire gear? Doors Number, size and type. Doors are often quoted separately. Consent and engineering Included, or an extra? Delivery Included to your site? Upkeep What needs checking, treating or replacing over the next 20 years? Where pole sheds come out cheaper Small, simple sheds in sheltered spots, where internal poles don’t get in the way, are where a pole shed can be the cheaper choice. Timber is familiar to local builders, and a basic open-front shed can go up quickly. Where steel catches up Span....
Kitset or Full Design & Build: Which Works Out Cheaper?
Last Updated: November 9, 2026Steelspan supplies kitset buildings anywhere in New Zealand and the Pacific, and also delivers full design & build projects. People often ask which is cheaper. The kitset price is lower on paper, but the real question is who takes on the work, the coordination and the risk between delivery and handover. What a Steelspan kitset includes Your quote lists exactly what’s included, so read it carefully. It reflects what we’ve agreed with you. For example, if you only want the frame because you’ll put it up yourself and your own roofer or cladding supplier will do the cladding, the quote will say we’re supplying the frame only, with a design and PS1 ready for you to lodge with council. What you take on with a kitset If you’re handy, or you have a builder you trust, that’s very manageable. An experienced steel erector who built one of our kitsets put it this way: “The kit was timely and well placed upon delivery. Plans [were] clear and correct.” What design & build covers With design & build, we run the whole job: You deal with one company from start to finish. So which is cheaper? Kitset Design & build Upfront...
Investment Boost: A 20% Upfront Tax Deduction on a New Commercial Building
Last Updated: November 9, 2026Since 22 May 2025, New Zealand businesses can claim an immediate 20% tax deduction on the cost of new business assets, and that includes new commercial and industrial buildings. It’s called Investment Boost. For a business planning a new warehouse, workshop or factory, it’s worth understanding before you set your budget. This post explains the scheme in general terms. It isn’t tax advice, so talk to your accountant about your situation. How it works In the income year a new asset is first available for use, you can deduct 20% of its cost up front, on top of the usual depreciation rules. There is no cap on the value of the investment. Inland Revenue’s guidance is on its Investment Boost pages. Which buildings qualify Why it matters more for buildings Commercial buildings currently have a 0% tax depreciation rate. That means the 20% Investment Boost deduction is, in practice, the main tax deduction available on the building itself, rather than just bringing depreciation forward. Depreciation recovery rules can still apply if you later sell the building for more than its tax book value. A simple illustration Say a company builds a new warehouse that costs $500,000. The real numbers depend...
What Does a Commercial or Industrial Building Cost per m² in 2026?
Last Updated: November 9, 2026A per-square-metre figure is the first thing most business owners want, and the least reliable. A plain warehouse shell on a flat, prepared site and a warehouse with offices, a heavy-duty slab and fire-rated boundary walls can be the same size and very different prices. Here’s what separates them, and how we get you from a ballpark to a firm number. Shell vs finished building The shell is the frame, roof, walls and doors. A finished building adds the floor slab, site works, services, offices, amenities and fit-out. Always check which one a quoted rate covers. The shell is often the smaller part of the total. What moves the price per m² Site works. Earthworks, retaining, stormwater, hardfill, carparks and service connections. A sloping or soft site can add more than the building itself. The floor slab. Forklifts, racking and heavy machinery need a thicker, more heavily reinforced slab than a storage shed. Span and height. Wider clear spans and taller walls need heavier frames. Overhead cranes or gantries add load and cost. Fire design. Buildings close to a boundary may need fire-rated walls with limited openings, under the Building Code’s fire clauses. Getting the layout right early can save...
American Barn Prices in NZ: What You Get for Your Money
Last Updated: November 9, 2026An American barn is the classic barn shape: a tall centre section with a lower lean-to wing on each side. It’s one of the most popular lifestyle buildings in New Zealand, because one building can hold a boat or truck in the high middle bay, with stables, a workshop or storage in the wings. Here’s what shapes the price. Why people choose one What drives the price Overall footprint. The width of the centre plus both wings, times the length. Centre height. A taller centre means bigger frames and more cladding, and it’s usually set by the tallest thing you’ll park there. Wing width and height. Wider wings add floor area relatively cheaply. Very low wings can limit what fits, so check door heights. Loft or mezzanine. A floor up high needs engineering for the load it will carry, plus stairs and balustrades. It adds real cost, and usually brings the building into consent territory if it wasn’t already. Doors. Most barns have big doors in the centre and smaller doors or open bays in the wings. Each roller door adds a noticeable amount. Cladding and colour. Many owners pick two-tone colours for the barn look. Painted steel costs more...
How Much Does a Steel Shed Cost in NZ? A 2026 Price Guide
Last Updated: November 8, 2026The honest answer is that it depends on your size, span and site, and on how much of the job you want us to do. A price per square metre you find online is a rough guide at best, because two sheds with the same floor area can differ a lot in price. This guide explains what moves the number, so any quote you get makes sense. What drives the price Floor area and shape. A bigger building costs more overall, but the cost per square metre generally improves as the floor area grows, because end walls, engineering and delivery are spread over more floor. That only holds if everything else stays the same. Add height, internal walls or more doors and the rate per m² climbs again. Pricing a building is a balance of all these factors, which is why two buildings of the same floor area can have very different rates. Span. A wider clear span needs a heavier portal frame, so a 20 m span costs more per metre of length than a 10 m one. But it saves you internal posts, and wider buildings still benefit from the economies of scale above, as long as height,...
