How long does it take to build a new house in Australia?

The number everyone quotes is half the picture

The official build-time figures come from the Australian Bureau of Statistics. The ABS measures how long new houses take from building approval, the permit that lets work start, through to the date the home is finished.

Although this can be a helpful indicator of how long a house takes to get built, it doesn't account for the time taken to purchase the land, have it surveyed, design a house and have it approved. The ABS publishes the time in two parts:

• Approval to start on site: about 2.3 months nationally in 2025-26, but almost 4 months in South Australia. This is usually finance, contracts, the builder's schedule and site set-up.
• Start on site to finish: about 9.2 months in 2024-25, falling to roughly 8.4 months in 2025-26, the quickest since 2021-22.

This timeframe also varies greatly depending on the type of build you undertake. A volume builder building a pre-designed home can take months off the process compared with an architectural or custom-designed home on a tricky site.

Every stage, from first site check to keys

A new house moves through three phases: getting ready, getting approved, and building. Here's what happens at each stage and roughly how long it takes.

1. Stage 1

   Feasibility and site checks

   Confirm what the zone allows, which overlays apply (heritage, bushfire, flood), what's on the title (easements, covenants) and whether water, sewer and power are available.

   Roughly how long: Minutes for the zone and overlays with a Struqt report. Days to weeks for the title and services, or for a planner or your builder to check the lot.

2. Stage 2

   Survey and site investigations

   Feature and level survey, soil test to classify the site for footings, plus a bushfire or flood assessment if an overlay applies.

   Roughly how long: 1 to 2 months

3. Stage 3

   Design and documentation

   First sketches, then the developed design, then working drawings, engineering and the energy rating your builder and certifier need.

   Roughly how long: 2 to 6 months, sometimes more

4. Stage 4

   Planning approval

   Council or the state assessor checks the design against the planning rules for your zone. Some houses skip this or get a fast-track check.

   Roughly how long: 5 business days to 3 months or more (see the state table below)

5. Stage 5

   Building approval

   A building surveyor or certifier checks the drawings against the National Construction Code. Depending on the state, they or the council then issue the building permit.

   Roughly how long: Varies by state, from about 2 weeks to a month or more once the paperwork is complete

6. Stage 6

   Finance, contract and start date

   Construction loan, signed building contract, and waiting for the builder to schedule your job.

   Roughly how long: About 2.3 months on average from building approval to the first work on site (ABS, 2025-26). Finance and the contract can run alongside building approval.

7. Stage 7

   Site works and base

   Site cut, footings and slab (or footings and base brickwork for a timber floor).

   Roughly how long: 3 to 6 weeks

8. Stage 8

   Frame

   Wall and roof frames go up. In some states, including Victoria and Queensland, the frame must be inspected before it's covered.

   Roughly how long: 2 to 4 weeks

9. Stage 9

   Lock-up

   Roof on, external walls clad, windows and external doors fitted. The house can be locked.

   Roughly how long: 4 to 8 weeks

10. Stage 10

    Fixing

    Plasterboard, cabinetry, internal doors, skirting, architraves, wet areas fitted out.

    Roughly how long: 4 to 8 weeks

11. Stage 11

    Practical completion and handover

    Painting, final fit-off, cleaning, your pre-handover inspection, final certificates, keys.

    Roughly how long: 4 to 8 weeks

Stage durations are based on a single-storey brick veneer home. Stages 7 to 11 together took about 9.2 months on average in 2024-25 and about 8.4 months in 2025-26 (ABS). That average is longer than the ranges above add up to because it covers every kind of new house, including double-storey and custom homes, and any delays between stages.

Stages 7 to 10 are the stages Victorian law uses for progress payments, and many contracts elsewhere use similar ones. For a full contract, Consumer Affairs Victoria gives the usual schedule as 10% at base, 15% at frame, 35% at lock-up and 25% at fixing, and the law caps what a builder can claim at each stage at those amounts. Knowing when each one lands matters, because that's when your bank draws down the loan.

What the build itself costs is a separate question, covered in how much it costs to build a house.

How long it takes in each state and territory

In 2025-26, a new house took about 10.7 months on average from building approval to completion. South Australia was the slowest in the country at 12.9 months. The Northern Territory was fastest at 8.2 months.

Source: ABS Building Activity, Australia, June 2026 (released 7 October 2026), average commencement and completion times for new houses. The ABS publishes these in quarters; we've converted them to months. Each total adds the two published averages, so the rounded figures may not add exactly.

Every state except Queensland got faster than the year before. Western Australia improved the most, cutting three months. South Australia's slow spot is the wait between approval and starting on site: 3.9 months, more than double Victoria's. South Australia has had the longest wait in the country at that step in every year of the ABS series, back to 2015-16.

Delayed construction start times can be a result of many contributing factors. Common culprits are the builder's queue of jobs, low trade availability or slow finance approvals.

How long planning approval takes in each state

Most states and territories set a deadline for council or the state assessor to decide a planning application. Real-world times are often longer due to councils requesting further information, which usually stops or restarts the assessment clock.

Many new houses can bypass a planning application. If the design meets every standard for the zone and no triggering overlays apply, several states let it go straight to building approval or through a fast-track process.

Which pathway a house takes, and what each state calls it, is set out in CDC vs DA, accepted development in Queensland and the R-Codes in Western Australia.

What blows out a timeline

The averages hide a wide spread. These are the things that push a build from the fast end to the slow end.

• A request for more information. In most states the approval clock stops the day council asks for more detail and only restarts when you answer. In Victoria it starts again from the beginning. A slow reply can cost weeks. Missing information on the drawings is a common cause.
• Overlays on your block. Heritage, bushfire, flood and similar overlays usually mean extra reports and a referral to another agency. In South Australia, a referral can take a merit application from 20 business days to 50.
• Public notice. If neighbours have to be told, add the notice period plus time for any objections to be dealt with. A design that departs from the planning rules is a common trigger.
• Finding things in the ground. Rock, filled land, a high water table or reactive clay can change the footing design after you've started.
• Builder capacity. At the end of June 2026 there were 95,447 houses under construction across Australia, up 11.8% in a year. More jobs on the go means more competition for the same trades.
• Market conditions. Covid put significant strain on the building industry, increasing demand and leading to trade and material shortages. Before 2021-22 a new house took about 6.5 to 6.7 months from start to finish; by 2023-24 it took 10.4 (ABS).
• Changes after you sign. Every variation to the design or selections can mean re-ordering, re-pricing and sometimes re-approval.

Most of these are known before you buy, or before you start design. That's when they're cheapest to deal with.

The overlays that most often add a report and a referral are explained in heritage overlays and flood overlays.

Know your timeline before you commit

Sources

• ABS: Building Activity, Australia, June 2026
• ABS: Building Approvals, Australia, methodology (what counts as a building approval)
• PlanSA: Planning consent assessment timetables
• Planning and Environment Interim Regulations 2026 (Vic)
• Environmental Planning and Assessment Regulation 2021 (NSW)
• NSW Planning: Statement of Expectations Order (council assessment targets)
• Queensland Planning: Development Assessment Rules
• Planning and Development (Local Planning Schemes) Regulations 2015 (WA)
• Tasmanian Planning Scheme: Permits
• ACT Planning: After you apply for a DA
• NT Government: Apply for a development permit
• Consumer Affairs Victoria: Deposits and payments for building work