Steel vs Timber Frame Cost Comparison in Perth (2026)
In Perth the steel-versus-timber choice is unusual because the dominant tradition is double-brick, so a framed upper level or home is the decision point.
Timber frame (pine)
- Supply and erect per m²
- $160 to $240 per m² of floor area, supplied and erected, treated pine
- Termite and pest risk
- Vulnerable. Needs a compliant termite management system and ongoing inspections
- Thermal behaviour
- No significant thermal bridging. Timber studs insulate reasonably in themselves
- Erect time
- 5 to 10 days for a single storey house frame with a standard crew
- Trade availability
- Excellent. Every carpenter in the country works in timber daily
- Movement and settling
- Shrinks and moves with moisture. Some cornice and door cracking in the first 2 years
- Fitout and later changes
- Very easy. Anything can be screwed, nailed or notched later without special tools
Light gauge steel frame
- Supply and erect per m²
- $190 to $280 per m², roughly 10 to 20 per cent above timber on most jobs
- Termite and pest risk
- Immune. No termite management system required for the frame itself
- Thermal behaviour
- Conducts heat, so thermal breaks are mandatory or condensation and cold bridging follow
- Erect time
- 4 to 8 days. Factory-cut and pre-punched, so it goes together fast and square
- Trade availability
- Narrower pool, though far better than a decade ago in the major capitals
- Movement and settling
- Dimensionally stable. No shrinkage, noticeably fewer cornice cracks after handover
- Fitout and later changes
- Harder. Needs self-drilling screws, and no notching or drilling outside the punched service holes
What a steel vs timber frame cost comparison costs in Perth
Choosing a steel or a timber frame in Perth is a particular decision because the city's dominant construction is double-brick rather than framed, so the frame question usually arises for an upper storey, a lightweight extension or a framed home built as an alternative to masonry. The spans wanted, the termite exposure and the hot, dry Mediterranean climate shape it, since the frame carries the structure and steel and timber differ in cost, straightness and pest resistance. Timber frames cheaper and many builders know it, while steel is dead straight, termite-proof and spans further for an open living area.
A framed upper level on a single-storey double-brick Perth home is often lightweight steel or timber rather than more brick, to keep the added load down, and the choice between them turns on cost, span and termite risk. Steel resists the termites found in parts of the sandy coastal plain and will not warp, while treated timber is cheaper and quick to build. The low humidity of the dry climate is kinder to a timber frame than a humid city, though a framed wall still needs insulation that works in the hot summers. The isolation of the WA market can add lead time for a specialist steel section, and labour sits near the national average.
Erecting either frame is structural building work that needs a licensed builder, with a structural engineer sizing a steel frame or a long-span timber frame, with building approval, in Western Australia under WA Building Services. For a Perth home, the clearest way to choose between steel and timber is by the spans you want, the termite exposure, and the fact that framing is usually the alternative to the double-brick norm.
Compare against the national picture: Steel vs Timber Frame Cost Comparison in Australia →
Steel vs Timber Frame Cost Comparison in other cities
Frequently asked questions
Is framing common in Perth?
Less than elsewhere, because the dominant construction is double-brick, so the steel-versus-timber frame question usually arises for an upper storey, a lightweight extension or a framed home built as an alternative to masonry in Perth.
How do I choose steel or timber framing in Perth?
By the spans wanted, the termite exposure on the sandy coastal plain, and the hot, dry Mediterranean climate, since timber frames cheaper and steel is dead straight, termite-proof and spans further for an open living area in Perth.
Why frame an upper level rather than brick it in Perth?
To keep the added load down. A framed upper level on a single-storey double-brick Perth home is often lightweight steel or timber rather than more brick, so the walls below and footings carry less extra weight.
Do I need a licence to build a house frame in Perth?
Yes. Erecting a frame is structural building work needing a licensed builder, with a structural engineer sizing a steel or long-span timber frame, with building approval, in Western Australia under WA Building Services.