✅ Updated 2026 — WA specific

Western Australia has its own building registration system and unique grant programs for tradies — plus some WA-specific tax considerations worth knowing about.

📋 In This Article

  1. →WA building registration
  2. →WA government grants
  3. →Tax deductions for WA tradies
  4. →WorkCover WA
  5. →FAQs

WA Building and Trade Registration

In Western Australia, building practitioners are registered by the Building and Energy division of the Department of Mines, Industry Regulation and Safety (DMIRS):

  • Builder registration — required for all building work, categorised by type and value
  • Plumbing and gasfitting — licensed through Building and Energy, all plumbing work requires a licensed plumber
  • Electrical — licensed through the Electrical Inspectorate (also Building and Energy)
  • Air conditioning and refrigeration — licensed through Building and Energy
  • Home building works — contracts over $7,500 require a registered builder

Apply and renew at commerce.wa.gov.au/building-and-energy. All registration fees are tax deductible.

WA Government Grants and Programs

  • Small Business Development Corporation (SBDC) — free advisory services, workshops and training for WA small businesses at smallbusiness.wa.gov.au
  • Regional grants — additional support programs for tradies operating in regional WA — check grants.wa.gov.au
  • Apprenticeship support — the WA Government has specific programs supporting apprenticeships in the building trades

Tax Deductions — WA Specific Considerations

  • Building and Energy registration fees — fully tax deductible
  • Home indemnity insurance — required for residential work over $20,000 in WA, tax deductible
  • WorkCover WA premiums — deductible for employers
  • FIFO / remote area allowances — WA tradies working on mining or remote construction sites may have additional deduction opportunities. Specific rules apply — talk to your accountant.
  • Vehicle costs — WA tradies often drive significant distances. A well-maintained vehicle logbook covering long regional work trips can produce very large deductions.

WorkCover WA

Workers compensation in WA is managed through WorkCover WA. Employers must have a workers compensation policy before their first employee starts. Policies are purchased from private insurers authorised by WorkCover WA. Premiums are tax deductible.

Do WA tradies need home indemnity insurance?

Yes — for residential building work where the contract price exceeds $20,000, WA law requires the builder to have home indemnity insurance in place before starting work. This protects homeowners if the builder cannot complete the work. Get it through QBE or approved insurers. The premium is a deductible business expense.

What is the threshold for needing a building registration in WA?

In WA, building registration is required for home building works contracts over $7,500 (including labour and materials). For work under this threshold in your specific trade, check with Building and Energy as different rules apply to different trade categories.