Wide Span vs. DIY: The Smarter Way To Build

Wide Span Sheds vs DIY: The Smarter Way to Build

Deciding whether to self-build, sub-contract, or use a full-service build team makes a real difference to cost, risk, and how long the project takes. Here's what actually separates DIY from a Wide Span Sheds build, with the trade-offs made explicit rather than assumed.

The hidden costs of DIY

Common pitfalls:

• Unfamiliarity with steel-framed structures: most residential builders specialise in timber, not steel, and installation mistakes can cost weeks or thousands of dollars
• Un-engineered site conditions: without site-specific engineering, compliance issues, council delays, and extra fees are common
• Insurance and warranty gaps: if something fails, who's liable? Wide Span Sheds covers build insurance, public liability, and workmanship on every build. See the guarantees here: https://www.sheds.co.nz/our-guarantees/
• Cost blow-ups: excavation, slab contamination, and fixing misaligned frames all add to the final bill
• Time and stress: DIY takes longer, and the owner becomes the project manager chasing every trade

DIY vs Wide Span Sheds build team

What a Wide Span Sheds build actually includes

The process:

1. Site assessment and engineering, including foundation and wind loading
2. Steel components manufactured off-site for quality control
3. On-site build by a specialist team under full supervision
4. Final inspection, handover, and warranty documentation

Warranty and risk protection:

• Public liability and build insurance included
• Manufacturing warranty plus workmanship guarantee
• Full compliance with the current NZ Building Code
• One point of accountability instead of coordinating multiple trades

Built to last:

• Engineered for NZ's wind zones and climate conditions
• Premium finishes including New Zealand Steel, COLORSTEEL®, and ZINCALUME®

Is DIY still viable?

It can work if there's genuine experience with steel construction, access to specialist trades (engineer, installer, electrician), and a time and budget buffer for the unexpected.

Before going that route, check:

• Is site-specific engineering sorted?
• Is the builder actually confident with steel framing, not just timber?
• Is there budget set aside for hidden site issues or compliance changes?
• Can long-term durability actually be guaranteed?

If the answer to any of these is no, a professional build is the safer call.

Frequently asked questions

Do I need consent if I build it myself?
It depends on size, location, and use. Wide Span Sheds handles the consent path on full builds. See the consent-exempt guide: https://www.sheds.co.nz/resources/shed-guides/

What's covered under warranty?
Workmanship and manufacturer warranties on the steel components. Full details: https://www.sheds.co.nz/our-guarantees/

Can I get kit-set only instead of a full build?
Yes. Wide Span Sheds offers supply-only options for anyone using their own builder, with engineering and compliance support still included.

How much extra does a full build cost over kit-set?
As a real example, Wide Span Sheds' 12m x 16m Essential Range kit-set prices at $50,900. A full-service build typically adds a similar amount again for construction and foundations. Factor in the hidden costs of a DIY approach, delays, rework, specialist trades, insurance, and fixing incorrect installation, and the final DIY bill can exceed that total significantly.

Next steps

• Download the shed guides: https://www.sheds.co.nz/resources/shed-guides/
• Try the Shed Designer Tool: https://www.sheds.co.nz/3d-shed-viewer/
• Request a free site assessment and quote: https://www.sheds.co.nz/3d-shed-viewer/

DIY looks tempting at first glance, but the hidden costs, risk, and value lost usually make a specialist build team the better investment. Wide Span Sheds combines engineering, specialist trades, warranty protection, and NZ-specific design to get it right the first time.