How Long Does a Renovation Take in Perth?
Ask how long a renovation takes and you usually get a construction timeframe. Three to six weeks for a bathroom, four to twelve months for a whole house. Those figures can be useful, but they only cover the period when trades are working in your home.
If you are timing a renovation around a lease ending, settlement, school term or other fixed date, the number you need is different. Your timeline starts when you begin planning and ends when the work is complete and you can move back in. On many Perth renovations, a significant part of that time is spent on design, documentation, approvals, selections and scheduling rather than construction.
What follows is the renovation timeline in the order it typically happens, with each stage showing what can affect the timeframe and where you have some control over the clock.
TL;DR
- Count the whole programme, not the build. Design, documentation and approvals often take longer than construction.
- Approvals in WA run on statutory clocks. A local government has 60 calendar days to determine a development application, or 90 if it goes out for consultation.
- A building permit cannot be applied for until planning approval is granted where planning approval is required. The two stages are sequential, so they cannot be run in parallel to save time.
- Building permits are then 10 business days for a certified application and 25 for an uncertified one.
- On site, a bathroom runs around 4 to 6 weeks, a kitchen 6 to 10, and a whole-home renovation commonly 5 to 9 months, depending on scope and structure.
- The delay you are most likely to hit is your own decision-making. It is also the only one on the list you fully control.
The whole programme, stage by stage
Add the pre-construction rows together and a straightforward Perth renovation is usually four to seven months before demolition starts. A character home with a heritage referral and a design that needs consultation can run past nine.
Some of those rows overlap. Consultants can work while the concept is still resolving, and pricing can start before the building permit lands. Two of them cannot overlap at all, and they are the two longest: planning approval has to finish before the building permit begins, and neither can start until documentation is complete.
That is the part most guides compress into a sentence, and it is the part that decides whether you make your date.
Design and documentation is the longest stage you control
Concept design moves at the speed of your decisions, which is why it varies so much between two otherwise identical projects.
A revision turned around in two days keeps the programme moving. The same revision sitting in an inbox for three weeks while you and your partner talk about it costs three weeks, and nothing downstream can start without it. Over a full design phase, that pattern is the single biggest lever you have.
Documentation is different. Once the design is settled, working drawings take the time they take, and rushing them buys you nothing. Thin documentation goes to council and comes back with questions, and it goes to builders who then price the gaps as risk. Both cost more time than the drawings would have.
Approvals run on a clock you do not control
This is where Perth renovations lose the most time, and where owners have the least influence.
Where planning approval is required, the local government has 60 calendar days from lodgement to determine an application, or 90 days if it goes out for public consultation. Consultation itself typically runs 14 to 21 days and is triggered when a proposal departs from the deemed-to-comply requirements of the planning framework, which a lot of renovations do.
Those clocks stop when the council asks you for more information. The days spent waiting on your designer to answer a query are not counted against the council's period, so an application that looks like a 60 day job on paper can sit for four months in practice.
The building permit is a separate step from planning approval. Where planning approval is required, it must be resolved before the building permit can be granted. Once a complete building permit application is lodged, the statutory decision period is 10 business days for a certified application and 25 business days for an uncertified application.
Heritage and sewer requirements can add another layer to the approval process. A property on the State Register, or a proposal that requires heritage advice, may need additional assessment before the application can be determined. If your renovation involves building over or near a sewer, you may also need approval from the Water Corporation, which has its own application process and timeframe.
Not every renovation needs planning approval. Work that meets the exemptions in the local planning scheme can go straight to a building permit, which cuts months from the programme. Finding out which side of that line you sit on is a phone call, and it is worth making it before the design goes anywhere.
Construction: the part everyone means
These are on-site durations for a job that is properly documented, approved, and has its selections locked before start.
How long does a bathroom renovation take? Around 4 to 6 weeks
Strip-out, services rough-in, waterproofing, screed, tiling, fit-off. Waterproofing and screed both need curing time that cannot be compressed, which is why a bathroom rarely comes in under a month no matter how small it is. A bathroom renovation timeline is mostly fixed pauses with work fitted around them.
How long does a kitchen renovation take? Around 6 to 10 weeks
Cabinetry is made off site while the room is prepared, then the benchtop is templated only once the cabinets are installed. That template-to-install gap is usually one to two weeks on its own, and it sits in the middle of the job where nothing else can proceed. Cabinetry lead times set the rest of the kitchen renovation timeline.
How long does a whole-home renovation take? Commonly 5 to 9 months
Demolition, structural work, roof, services, lock-up, linings, joinery, finishes, external works. Older Perth homes sit at the longer end because double brick structural work, re-roofing and full services replacement all take real time, and because what is behind the plaster is not always what the drawings assumed.
Add an extension and you are into footings, slab, framing and roof before the existing house is touched, which typically adds two to four months.
What actually causes delays
Every list names the same five causes. This is the same list ordered by how often it happens and how much time it adds.
The pattern is hard to miss. The top of that table is mostly you, and the bottom is mostly nobody. Builders get blamed for the timeline more than they earn it, and the stages with the most slack in them are the ones that happen before a builder is even engaged.
Conditions found after demolition deserve a mention because they're often treated as evidence that the builder got the job wrong. In an older home, opening up walls and floors can reveal conditions that weren't visible during design. That's a normal renovation risk, not necessarily a sign of poor workmanship.
A realistic programme should allow some time for investigating and addressing unexpected conditions rather than assuming everything behind the existing finishes will match the drawings.
If you have a date you cannot move
If you have a fixed date when you need the renovation finished, work backwards from that date before you commit to the project.
Start with your handover date and allow enough time for construction. Then allow another four to six weeks for pricing, signing the contract and getting the project ready to start. Add the time needed for design, documentation and any required approvals. Use the full approval timeframe rather than assuming everything will be approved quickly.
If those stages take you past the date you need the house back, you have three choices: reduce the scope, stage the work or move the handover date. Trying to make up the difference by assuming every stage will run as quickly as possible can leave you with a project that finishes late and costs more.
Ask your builder for a written programme before you start. It should show the main stages, including approvals, and give you a realistic timeframe for each. Ask which tasks could delay everything else if they fall behind.
Frequently asked questions
How long does a full home renovation take in Perth?
Around 5 to 9 months on site for most whole-home renovations, and 10 to 16 months end to end once design, documentation and approvals are counted. Older and character homes sit at the longer end, mainly because of structural work, services replacement and the extra approval steps that come with a heritage or character listing.
How long does design and approval take before building starts?
Commonly four to seven months for a straightforward renovation, and longer where the design needs consultation or a heritage referral. Design and documentation usually account for two to four months of that, and approvals for the rest. It is the least visible part of the programme and often the largest.
How long does a bathroom renovation take?
Around 4 to 6 weeks on site. Waterproofing and screed both need curing time, so the sequence has fixed pauses in it that a small bathroom does not shorten. Most bathroom renovations do not need planning approval, which keeps the total programme close to the build duration.
How long does a kitchen renovation take?
Around 6 to 10 weeks on site. The benchtop cannot be templated until the cabinetry is installed, and that gap alone is usually one to two weeks. Cabinetry lead times are the other variable, and ordering late pushes everything behind it.
Can you live in the house during a renovation, and does it slow the job down?
You can often stay in the house during a contained renovation, such as a single bathroom or kitchen, but it can affect the programme. Trades may need to work around your belongings, dust and access need to be managed, and areas may need to be secured at the end of each day.
For a whole-home renovation, moving out can make the work easier and potentially shorten the programme. Whether that saves enough time and money to justify temporary accommodation depends on the size and layout of the project.
What causes most renovation delays?
Owner decisions, by a wide margin. Selections, revisions and sign-offs sit on the critical path more often than any trade does. After that came council requests for further information, late orders on long-lead items, and conditions found after demolition.
How long does council approval take in Perth?
Where planning approval is required, the local government has 60 calendar days to determine the application, or 90 days if it is advertised for public consultation. The clock pauses while they wait on further information from you. A building permit follows, at 10 business days for a certified application and 25 for an uncertified one.
Do character homes take longer to renovate than newer houses?
Yes, at both ends. Approvals take longer because of heritage or character controls and the referrals that come with them, and construction takes longer because double brick structural work, roof repairs and services replacement are slower and less predictable than in a newer house. Budget more time for both stages, not just the build.
