A home extension is any addition to your existing house, such as extra rooms, a larger kitchen, living areas, or even a second story.

Yes. Most extensions require development approval and a building permit, especially if you’re altering the building footprint or adding a second story.

Depending on size and complexity, an extension usually takes 3–9 months from planning to completion.

Costs vary depending on size, materials, and design. Typically, single-story extensions start around $1,500–$3,000 per m², with higher-end finishes costing more.

Yes, but your extension must comply with setback, lot coverage, and open space requirements. Some designs may need council approval for variations.

Absolutely. A good builder will match rooflines, materials, and colours so the extension blends seamlessly with your house.

Yes, second-story extensions are possible but often require structural engineering approval and stricter council rules.

Yes, but a granny flat is considered a separate dwelling and may need additional approvals from council.

Setbacks vary by council and local zoning, but usually require at least 1–2 metres from the side or rear boundaries.

Yes, extensions over existing structures are possible, but may need structural reinforcement and council approval.

Yes, but it depends on the type of extension. Builders can usually plan construction to minimise disruption, though some areas may be temporarily inaccessible.

Not always. Many builders provide design services, but an architect is recommended for complex or multi-story extensions.

Yes. Builders can incorporate solar panels, energy-efficient windows, insulation, and water-saving systems.

A well-designed extension can significantly increase your property value by adding living space, functionality, and modern features.

All plumbing and electrical work must comply with WA building and safety regulations. Licensed tradespeople must carry out installations.

Yes, but the council may impose strict design guidelines to preserve the property’s heritage features.

Yes, these are common additions. They usually require building permits, depending on size and location.

Yes. Options include construction loans, equity loans, or refinancing your existing mortgage. Builders usually provide detailed quotes for loan applications.

Yes. Your builder should have construction insurance, and you may need to update home insurance to cover the new structure.

Look for builders with experience in extensions, WA licensing, positive references, and a clear understanding of local council rules.

Minor changes are usually possible, but significant changes may increase costs and extend timelines. It’s best to finalise the design before construction starts.

Yes, but you’ll need strata approval in addition to council permits.