Selling an owner-built home in Collie: records, insurance and marketing

Owner-built homes are not unusual in regional Western Australia. Some are complete new dwellings; others involve substantial additions or renovations managed by the owner. When the property is sold, buyers and their advisers will want to understand who was responsible, what was approved and whether the seller still has legal obligations connected with the work.

WA's owner-builder system treats the named owner-builder as responsible for managing and supervising the work. Contracting individual trades does not remove that responsibility. A good Collie sale campaign therefore begins with records, not a broad claim that the home was “built to a high standard”.

This article is general seller-preparation and marketing information, not building, insurance, engineering, legal, conveyancing or valuation advice. Requirements depend on the permit date, value and class of work, the sale date and the individual property. Confirm the position with Building and Energy, the Shire of Collie, the insurer and qualified advisers.

Confirm exactly which work was owner-built

Start with the owner-builder approval and building permit. Record the permit number, issue date, scope, declared value, approved plans and the people named on the approval. Then compare that scope with the house and improvements that now stand on the land.

Separate work performed under the owner-builder permit from earlier structures, later renovations and work completed by registered builders. A main residence, extension, patio, shed, pool, retaining wall or converted room may each have a different approval history. Do not group every improvement under the owner-builder label unless the documents support it.

The WA Government says an owner-builder takes responsibility for managing trades, supervising the work and ensuring compliance. It also says the owner-builder remains responsible for the work for a minimum of seven years and may be responsible for rectifying faults identified by a purchaser after sale.

Official source: WA Government — Owner-builder approval, checked 4 October 2026.

Use the building-permit date to check the seven-year sale rule

The permit date matters. Current WA Government guidance says an owner-builder who sells the home within seven years from the date the building permit was issued must have a home indemnity insurance policy in place for relevant work. The cover protects the purchaser and subsequent owners for the remainder of that seven-year period in the circumstances described by the scheme.

The guidance also states that selling an owner-built dwelling within that seven-year period without the required cover is an offence. It identifies residential building work thresholds and exclusions, including different treatment for certain Class 10 or associated work. Do not decide eligibility from a summary article or from the sale price. Give the insurer and adviser the permit, work value and scope so they can confirm the requirement.

In May 2026, WA's Building Commissioner published a reminder after owner-builders were prosecuted for selling a South West home without required cover. The notice said the obligation applies when the owner-built home is sold within seven years of the permit and the relevant building work was valued over $20,000.

Current enforcement source: WA Government — Owner-builders reminded about insurance, published 29 May 2026 and checked 4 October 2026.

Build a complete approval and inspection file

Collect the owner-builder approval, building permit, certified plans, specifications, engineering, energy assessment, inspection reports, notices, completion documents and correspondence with the Shire. Add invoices and compliance certificates from electricians, plumbers, gas fitters, waterproofers and other licensed trades.

The Shire of Collie says its Building Services team administers approvals for new work, retrospective work and demolition under the Building Act 2011 and related standards. Its public guidance tells owners to seek advice when unsure whether construction work needs a permit.

If the current building differs from the approved drawings, make a marked comparison and ask the Shire or a qualified building professional what should happen next. A missing record does not prove the work was unauthorised, but neither does age or long use prove approval. Avoid marketing a room as a bedroom, studio or independent dwelling when the approved use is not confirmed.

Local source: Shire of Collie — Building Services, checked 4 October 2026.

Prepare a defects, repairs and maintenance history

Buyers may commission building, timber-pest or specialist inspections. Before launch, record known defects, rectification work and unresolved issues. Keep photographs, invoices, warranties and reports for structural movement, water entry, drainage, roofing, retaining walls, waterproofing, electrical work and pest treatment.

Do not conceal a defect with paint, staging or image editing. Repair what can be repaired properly, disclose matters through the appropriate professional process and price the property with the evidence in mind. For moisture concerns, use the Collie damp and mould seller guide. For asbestos-era materials, see the Collie asbestos property guide.

If work was rectified by a registered builder or engineer, keep the scope and sign-off. A receipt for materials is useful history, but it is not the same as evidence that work complied with the permit or was completed by an appropriately licensed person.

Describe owner-built features with verifiable language

Owner-building can produce distinctive design, craftsmanship and practical spaces. Market those qualities through accurate dimensions, plans, materials and photographs. Avoid “engineered”, “council approved”, “fully compliant” or “built above code” unless current documents and qualified professionals support the statement.

Prepare a room-by-room feature register. Note materials, approximate dates, fixed inclusions, energy features and warranties. If reclaimed timber, custom cabinetry or handmade fittings are important, explain what remains with the property. If equipment or workshop tools are excluded, remove them before photography or mark them clearly in the contract schedule.

Professional photography should show workmanship, natural light, storage, flow and the relationship between additions and the original home. A floor plan can help buyers understand the layout, but it should not label a use that conflicts with approval records. Southside Media can coordinate imagery with the licensed agent and the verified building file.

Give buyers a useful evidence index

Do not hand buyers a loose archive of receipts containing account numbers, signatures and unrelated personal information. Create an index with document date, issuer, permit or project reference, work covered and whether a buyer copy is available. Keep original records secure.

A sensible buyer pack may include the permit set, completion evidence, current insurance certificate where required, key trade certificates, major repair invoices, warranties, engineering reports and a list of items still under warranty. Ask the settlement professional which documents should be provided before contract, during due diligence or at settlement.

Put current Collie statistics in the right context

REIWA's Collie profile was updated 2 October 2026 using transactions for the 12 months ending September 2026. It reported a median house sale price of $540,000, with lower and upper quartiles of $463,000 and $610,000, and a 20-day median selling time for houses.

Those suburb figures do not value an owner-built house or guarantee a sale time. Permit history, quality, layout, condition, land and comparable sales all affect the individual property. A licensed agent should assess the home using verified features and current comparable evidence.

Market source: REIWA Collie suburb profile, data updated 2 October 2026 and checked 4 October 2026.

Owner-builder sale preparation checklist

• Find the owner-builder approval, permit, approved plans and specifications.
• Confirm the permit issue date, scope, value and named owner-builder.
• Ask a qualified adviser whether home indemnity insurance is required.
• Start any required insurance process well before marketing.
• Compare the approved plans with the current house and improvements.
• Collect trade certificates, inspections, engineering, invoices and warranties.
• Record known defects, repairs and incomplete items honestly.
• Use verified descriptions for rooms, structures and construction claims.
• Prepare a privacy-checked document index for buyers and advisers.