In the 2025-26 financial year the average new detached home in Victoria took about 9.2 months from building approval to completion (ABS) - roughly 1.7 months to get on site, then 7.5 months of construction. Here is where the time actually goes.
Building permit issued by a registered building surveyor, pre-start documentation, soil test and contract sign-off before the first physical work on site. Faster when plans meet the VBA documentation requirements first time; slower when a planning permit, heritage overlay or bushfire (BAL) assessment is triggered.
Site cut, footings/slab, frame and roof, then brickwork/cladding and windows to reach lock-up. The weather-sensitive phase - Melbourne's wet, cold winter (June-August) can hold up slab pours and external trades.
Internal fit-out: plastering, cabinetry, tiling, fixtures, painting and final services, then practical completion and handover. Material lead-times on windows, stone and appliances are the usual hold-ups.
Knockdown rebuilds and sloping sites add time. Allow extra for demolition, service disconnection, and any planning overlay (heritage, bushfire BMO, character) before the building permit can issue. See the Melbourne knockdown rebuild guide and the Victorian building contracts guide.
Source: Australian Bureau of Statistics (ABS), “Average dwelling completion times” and Building Activity, Australia (reference period 2025-26 financial year, released 7 October 2026). Specific extract: Victoria averaged 2.49 quarters (~7.5 months) from commencement to completion for detached houses, plus ~1.7 months from approval to commencement (~9.2 months total). Figures are ABS state averages measured from the first on-site building activity to practical completion; they exclude pre-approval design, finance and land stages, and the ABS does not publish medians or ranges. Your build may differ with design complexity, site conditions and builder.
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