Large Sheds for Sale in Australia: 2025 Guide to Industrial & Commercial Sheds
From massive sheds for farm machinery storage to custom Colorbond garages in Perth and full-span warehouse sheds, this guide helps Australian homeowners and investors choose, certify, and build the right large shed with confidence.
Who Buys Large Sheds? Use-Cases and Types
“Large sheds” usually start from about 9m x 6m and go up to 30m+ clear spans. Typical applications:
- Industrial sheds and commercial sheds: light manufacturing, workshops, logistics, warehouse shed fit-outs.
- Rural sheds NSW and WA: farm machinery storage, hay sheds, shearing sheds, tractor and implement bays.
- Residential: custom-built double garage in Perth, multi-bay car storage, hobby/workshop spaces, boat and caravan covers.
- Retail and strata: big sheds for self-storage facilities, body corporate equipment storage, maintenance bays.
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What Are the Best Shed Materials for Perth’s Climate?
Perth’s hot summers and coastal air demand heat-reflective roofing, corrosion resistance, and smart ventilation. Colorbond steel and Zincalume are the two most common claddings for large sheds in WA.
Colorbond vs Zincalume — Which Is Better for WA Conditions?
| Factor | Colorbond | Zincalume |
|---|---|---|
| Heat performance | Thermatech technology in many colours reflects more sun; lighter colours reduce heat gain in Perth summers. | Reflective as bare metal when clean, but may dull; still good baseline solar reflectance. |
| Corrosion resistance | Excellent in most urban/regional zones; choose Ultra grades near marine environments. | Excellent base corrosion resistance; painting recommended near harsh marine environments. |
| Aesthetics | Wide Colorbond palette (Monument, Woodland Grey, Surfmist). Strong curb appeal for custom garages. | Metallic silver; can be painted. Industrial look suits farm and utility sheds. |
| Cost | Higher upfront than Zincalume due to coatings and colour system. | Generally lower material cost; budget-friendly for big spans. |
| Best fit | Residential, commercial façades, council-visible projects, custom Colorbond garages Perth. | Rural, interior cladding, large shed kits where value-per-metre matters. |
Australian Steel Institute guidance and CSIRO corrosion maps support choosing marine-grade options near the coast.
What Wind Rating Do You Need? (WA, QLD, NSW)
Large sheds must be engineered to AS/NZS 1170.2 (Wind actions), AS/NZS 4600 (Cold-formed steel structures), AS 4100 (Steel structures), and the NCC 2022. Region and site class determine purlin sizes, hold-downs, doors, and cladding fixings.
- Perth and most of the southwest WA: Region A (non-cyclonic), typically N2–N3 for suburban lots. Added 2024 WA wind-rating compliance notes
- Northwest WA (Karratha, Port Hedland) and coastal QLD (Townsville, Mackay): Region C (cyclonic). Townsville often C2–C3, with specific door bracing and fastener schedules.
- Darwin and some exposed coastal zones: Region D (severe cyclonic) — specialist engineering required.
Cyclone-Rated Sheds QLD: What Changes?
For cyclone-rated sheds QLD, expect closer screw spacings, heavier purlins/girts, extra knee/base plates, wind-lock roller doors (or reinforced panel doors), and certified hold-down systems. Always request a full set of RPEQ-stamped drawings and form 15/16 where applicable.
Check local wind region with BoM mapping and discuss terrain category with your engineer. See Bureau of Meteorology wind region resources.
How to Get Council Approval for Your Custom Shed in WA
Most large sheds in WA need a building permit under the Building Act 2011. Planning (development) approval may be required if you are in a heritage area, special control area, or exceeding local height/setback limits.
Steps to a council-approved shed WA
- Concept and siting: Confirm setbacks, maximum height, open-sided status, and stormwater requirements with your LGA.
- Engineering: Obtain site-specific, signed structural drawings to AS/NZS 1170.2. Provide slab/pier design if needed.
- Documentation: BA forms, title/plan, energy or bushfire notes if applicable, and specs for doors, cladding, gutters, tie-downs.
- Lodgement: Apply for building permit; some LGAs require planning approval first.
- Inspections and compliance: Footings/slab, framing, and final sign-off.
For national guidance on practitioner obligations, see HIA resources and Master Builders Australia.
council-approved sheds WA are faster when your plans match local R-Codes and you supply complete engineering upfront.
Large Shed Kits vs Custom-Built
- Large shed kits: Budget-friendly, faster lead times, standard bay widths (e.g., 3m, 4m), flexible for rural sheds NSW and regional WA.
- Custom-built: Tailored bay spacing, higher wind ratings, crane beams, mezzanines, insulated panels, architectural façades for commercial sheds.
Consider door package (roller vs panel-lift), gutter sizing for local rainfall intensities, and future expansion (extra bays).
Costs, Lead Times and Installation in 2025
Steel markets stabilised in late 2024 per industry outlooks, but lead times still vary by region and complexity.
- Supply-only large shed kits: from roughly $150–$300 per m² depending on wind rating, cladding, and span.
- Turnkey (slab, erection, doors, electrical rough-in): commonly $450–$900 per m² for non-cyclonic; cyclonic and architectural builds cost more.
- Lead times: 4–10 weeks for kits; 8–16+ weeks for engineered custom builds and council processing.
For broad market trends, see the “2024 Australian Steel Market Outlook” (industry) and the “2024 HIA Outdoor Structures and Home Improvement Report”.
Energy-wise, adding reflective insulation can reduce heat loads. See Energy.gov.au advice.
Case Studies: Big Sheds That Work
Perth — Custom Colorbond Double Garage and Workshop (9m x 6m)
- Spec: Colorbond Woodland Grey walls, Surfmist roof; anticon blanket; N3 wind rating; 2.7m eave height.
- Use: Car storage + hobby workshop with 15A power and LED high-bays.
- Outcome: 8–10°C cooler in summer due to insulation and whirlybirds; quick approval as it met local setbacks.
Townsville QLD — Cyclone-Rated Farm Machinery Shed (12m x 24m x 5m)
- Spec: Region C (C2) engineering, hot-dip galvanised frame, reinforced roller doors, upgraded hold-downs.
- Use: Tractor and implement storage, open front with two enclosed bays.
- Outcome: Passed certification; insurance accepted cyclone rating documentation. cyclone-rated sheds QLD requires careful fastener schedules.
Central West NSW — Rural Shearing and Storage Shed (18m x 30m)
- Spec: Zincalume cladding, ridge vents, bird-proof eaves, sliding doors for wide implement access.
- Outcome: Low maintenance, easy expansion via additional bay in Year 3.
Doors, Roofs and Drainage: Don’t Skip the Details
- Roof profiles: Gable roofs suit rain shedding; skillion roofs offer modern look and simpler guttering.
- Doors: Wind-lock roller doors or reinforced panel-lift doors for higher wind ratings; motorisation recommended for wide openings.
- Drainage: Oversize gutters and multiple downpipes based on local 1:20 ARI rainfall; connect to soakwells or onsite detention where required.
Where We Build and Supply
We supply and install steel sheds Perth, custom carports Melbourne, rural sheds NSW, and industrial sheds across WA, QLD and SA. Ask about custom Colorbond garages Perth and warehouse shed packages for logistics operations.
5-Step Buying Guide for Custom Sheds in Australia
- Define the use-case: Workshop, farm machinery storage, warehouse shed, or multi-bay garage. Size the clear openings and internal height early.
- Site and wind assessment: Confirm wind region (A/C/D), terrain category, shielding, and topography. Get soil info for slab or piers.
- Choose materials: Colorbond vs Zincalume, frame finish (galvanised vs painted), insulation level, door types, gutters and downpipes.
- Engineering and certification: AS/NZS-compliant drawings, door schedules, fixings, and bracing. Ensure RPEQ or suitably registered engineer sign-off where required.
- Council and build: Secure approvals, book slab, schedule delivery and erection, plan electrical and drainage. Keep all certificates for insurance.
FAQs: Industrial & Commercial Sheds
How tall can my shed be without planning approval?
Varies by council. Many LGAs allow outbuildings to a set eave/ridge height within setbacks. Check your local scheme before ordering.
Do you provide engineering for wind-rated sheds for cyclonic areas?
Yes. We supply site-specific engineering to AS/NZS 1170.2 for Regions A, C and D, including bracing, fixings and door wind-lock details.
What slab do I need for a large shed?
Common slabs: 100–150mm with mesh for light use; thicker or ribbed slabs for heavy vehicles. Engineers may specify piers under columns and thickened edges.
Can I DIY a big shed?
Experienced owner-builders can assemble large shed kits with the right tools and a certified slab. For industrial sheds or cyclonic builds, professional erection is recommended.
What warranties apply?
Base metal warranties vary by product and environment exposure. Colorbond and Zincalume offer published warranties—follow maintenance guides and choose the correct grade near marine areas.
How long does approval and build take?
Simple residential: 2–6 weeks approvals; 1–2 weeks erection. Commercial/industrial or cyclonic: 6–12+ weeks approvals; 2–6 weeks erection depending on span and fit-out.
Standards, Climate and Industry Resources
- Standards: AS/NZS 1170.2 Wind actions, AS/NZS 4600 Cold-formed steel, AS 4100 Steel structures, NCC 2022 Volume 2.
- Climate: Refer to BoM climate data for rainfall/wind design inputs.
- Industry: HIA, Master Builders Australia, Australian Steel Institute.
Ready for a Quote on a Large Shed?
Tell us your span, bay spacing, eave height, wind region, and preferred cladding (Colorbond or Zincalume). We’ll price supply-only large shed kits or turnkey industrial & commercial sheds with council-ready engineering.