Perth offers the largest average residential block of any Australian capital, the lowest entry prices of the major mainland markets, and — since April 2024 — the ability to add a rentable 70 square metre granny flat on a lot of any size without planning approval.
That combination makes renovation-for-profit arithmetic work here in ways it does not in Sydney or Melbourne. What Perth demands in return is an understanding of double-brick construction, because the cost of opening up a masonry floor plan is the single largest variable in most projects.
The Arithmetic First
On an $850,000 Perth purchase, transaction costs run roughly:
- Stamp duty — WA rates are moderate; budget around $33,000 to $36,000 on an $850,000 purchase without concession
- Legal, building, pest and searches — $2,000 to $4,500
- Holding costs — interest, rates, insurance and utilities across a six to twelve month project, commonly $28,000 to $65,000
- Selling costs — agent commission at 2 to 3 per cent, marketing at $5,000 to $15,000, styling at $4,000 to $10,000
- Capital gains tax where the property is not your principal place of residence
Perth’s lower entry prices mean the absolute dollar uplift is smaller than in Sydney, but so is the capital at risk and so are the transaction costs as a proportion. The working rule holds: every dollar spent on renovation should return $1.80 to $2.50 in value.
What Makes a Perth Suburb Renovation-Friendly
A wide unrenovated-to-renovated gap
Compare recent sales of original-condition homes against comparable renovated sales in the same street. A gap of $250,000 or more on an $850,000 median suggests genuine opportunity.
Housing stock that opens up affordably
This is the Perth-specific criterion. A 1970s double-brick home with a load-bearing spine wall requires $8,000 to $18,000 of structural work to open into a single living space. A brick-veneer or framed home of the same era requires a fraction of that.
Before comparing suburbs, understand what the housing stock is made of. Perth is overwhelmingly double brick, but brick veneer and framed construction do appear, particularly in some 1980s and 1990s estates, and those homes are materially cheaper to reconfigure.
Block size for a granny flat
With the minimum lot size removed, an ancillary dwelling is now possible on lots that previously could not carry one. But the setback requirements and site coverage limits still have to be satisfied alongside a usable yard for the main house. Blocks of 600 square metres and above make this comfortable; blocks under 400 square metres make it tight.
R-Code density coding
Worth checking on any property you consider. A higher density coding — R30, R40 and above — may permit subdivision or multiple dwellings, which is a different and potentially larger opportunity than renovation. It also affects the setback standards that govern any extension.
Headroom below the street ceiling
Every Perth street has a price no renovation can break. Buy at $850,000 where renovated homes top out at $1.4 million and you have $550,000 of headroom minus costs. Buy at $1.15 million and you have almost none.
Perth Regions Worth Examining
The western suburbs
Cottesloe, Claremont, Nedlands, Mount Claremont, Floreat and City Beach carry Perth’s highest values and the largest absolute uplifts. Entry prices are high, sites can be constrained, heritage and character controls apply in parts, and coastal salt exposure affects specification. This is experienced-renovator territory where small percentage errors cost the most.
For more detail on this part of the project, see Heritage and Character Controls in Perth: Renovating Without Getting Stuck.
The inner north
Mount Lawley, Highgate, North Perth, Menora and Inglewood combine Federation and interwar housing with post-war brick. Character controls apply in parts of Mount Lawley and Highgate — check before assuming a demolition or facade change will be approved. Strong buyer demand and a consistent renovation premium.
The inner south and east
South Perth, Victoria Park, East Victoria Park, Como and Bentley offer a mix of older stock and post-war brick with good river and city access. Victoria Park and East Victoria Park in particular have a wide gap between original and renovated pricing.
The middle north-east
Morley, Bayswater, Bassendean, Maylands and Embleton are dominated by 1960s to 1980s double brick on generous blocks. This is Perth’s core renovation market — level sites, straightforward access, few controls, and the housing stock that responds best to opening up and adding an alfresco. Granny flats work particularly well here given the block sizes.
The middle south
Willetton, Rossmoyne, Bull Creek, Riverton and Booragoon combine solid post-war stock with strong school-zone demand. Buyers pay well for finished family homes.
The coastal corridor
Scarborough, Trigg, Sorrento, Hillarys and North Beach carry lifestyle premiums and salt exposure. Renovation uplift can be strong where a property fails to make use of its position — but specification costs are higher for external work.
Fremantle and the port suburbs
Fremantle, South Fremantle, Beaconsfield and White Gum Valley have a distinctive older housing stock and significant heritage coverage. The character premium is real, and so is the approval friction. Check heritage status before anything else.
The growth corridors
Baldivis, Ellenbrook, Alkimos, Butler and the outer north and south are mostly post-2000 slab-on-ground homes. Renovation uplift is limited because buyers compare against new. Granny flats can work here for yield.
Choosing the Right Property
What to look for
- Sound structure, poor presentation. Dated kitchen, brown tiles, bad carpet and a closed floor plan are the ideal combination — cheap to fix, and they suppress the price.
- A block over 600 square metres, which accommodates an extension, an alfresco and a granny flat alongside a usable yard.
- A simple structural path to opening up. Ask a builder or engineer which walls carry load before you bid.
- North or east rear aspect, so an alfresco can be shaded from the west while catching morning light.
- Wide eaves, which many 1970s Perth homes have and which are worth preserving.
- Face brick in reasonable condition, or a wall already rendered — either avoids a brick-matching problem.
- Existing wet areas in sensible positions, since moving them in a slab home is expensive.
- An R-Code coding that permits what you intend.
What to avoid
- Salt damp at the base of walls. Blown render, salt crystallisation and deteriorating brickwork indicate a moisture problem that must be resolved before any finishing work.
- Corroded wall ties in coastal properties, indicated by horizontal cracking at regular intervals up the wall. Remediation is expensive.
- Heritage listing where your plan involves demolition or facade change.
- Bushfire prone areas in the hills and outer fringes, where construction requirements add substantially.
- Properties requiring extensive structural change. Three or four load-bearing walls coming out turns a $150,000 renovation into a $220,000 one before any finishes.
- Unapproved wall removal. A double-brick wall removed without engineered support is a structural problem, not just a paperwork one. If an internal wall has clearly been taken out, verify the approval before purchase.
- Steep sites requiring extensive limestone retaining unless the outlook justifies it.
Which Renovations Generate the Uplift
- Opening the floor plan. The single most transformative change on Perth’s compartmentalised double-brick stock, and what buyers respond to most.
- A covered alfresco connected to the living area. In this climate it is primary living space, and it costs a third of what enclosed floor area costs.
- Adding a second bathroom or an ensuite. A $28,000 ensuite frequently returns $70,000 to $110,000 in a family suburb.
- Kitchen renovation. The room buyers judge the whole house by.
- External shading on the west. Cheap, and it changes how the house feels on an inspection day in February.
- Cavity and ceiling insulation. Invisible, but it is what makes a double-brick house comfortable and it is a genuine selling point.
- A granny flat, for yield rather than capital — now available on lots of any size.
- Kerb appeal. Render or paint, landscaping suited to Perth’s dry summers, fencing and a new front door for $12,000 to $25,000.
Poor performers: swimming pools in most brackets, premium appliance packages, extensive heating, and elaborate irrigation-dependent landscaping in a city with water restrictions.
Due Diligence Before You Bid
- R-Code density coding and setback requirements from the local government — free, and it determines what you can build
- Overlay check — heritage, bushfire, flood and special control areas
- Building and timber pest inspection, and read the whole report. Ask specifically about wall ties, salt damp and roof framing.
- A builder or engineer’s view on which walls are load-bearing, and a rough cost for the openings you want. This is the Perth-specific check that matters most.
- Water Corporation asset location if a granny flat or rear extension is planned
- CCTV drain survey on any pre-1980 property, since under-slab plumbing at end of life is expensive to discover mid-project
- Comparable renovated sales in the same street within six months
Our Perth renovation cost guide gives the benchmarks, and our knockdown rebuild versus renovate comparison covers when a property is not worth saving.
The Granny Flat Angle
Western Australia’s April 2024 reform created a strategy that did not previously exist at this scale. An R-Code compliant ancillary dwelling of up to 70 square metres now requires no planning approval, can be built on a lot of any size, and can be rented to anyone.
Built for $190,000 to $280,000 and renting at $430 to $560 per week in Perth’s middle suburbs, that is a gross yield around 10 to 11 per cent on build cost, with no land purchase and no stamp duty.
For an investor this frequently beats renovating the main house, where the uplift must survive transaction and holding costs to be realised. The screening criteria are straightforward: adequate lot size for setbacks and site coverage, no heritage or bushfire overlay, no Water Corporation asset through the build zone, rear access available, and adequate electrical supply. See our guide to granny flats in Perth.
Tax and Exit Strategy
- Live in it and sell later. The main residence exemption generally removes capital gains tax, which on a Perth project is frequently the difference between profitable and marginal.
- Renovate and sell as an investment. CGT applies, with a discount generally available after twelve months. Renovation costs are capital and add to the cost base rather than being deductible.
- Renovate and hold. Prioritise durability over appearance, and consider a granny flat for yield.
Repeated buy-renovate-sell activity can be treated as carrying on an enterprise, with GST and income tax consequences quite different from a capital gain. Take advice before the second project.
The Honest Position
Perth rewards renovation, and the current settings — large blocks, moderate entry prices, and the most permissive granny flat rules in the country — make it a genuinely favourable market.
The projects that lose money here almost always share one cause: the owner budgeted for a timber-framed renovation and bought a double-brick house. Three load-bearing walls, a slab that has to be cut for the plumbing, and services chased into masonry throughout will add $40,000 to $70,000 to a project that looked straightforward on paper. Establishing what the walls are made of, and what they carry, before you bid is what separates the two outcomes.
Reading the Data Before You Commit
Suburb selection benefits from evidence rather than impression. The metrics worth gathering:
- Median sale price trend over five and ten years
- Days on market, which indicates demand depth
- The spread between 25th and 75th percentile sale prices, a proxy for the renovation premium
- Rental yield, which matters if the project may become a hold
- Building and planning approval volumes in the local government area
- Demographic change across successive censuses
- R-Code density coding across the suburb, which indicates both development potential and the setback standards that will apply
- The prevalence of double brick versus lighter construction, which directly affects reconfiguration cost
The single most useful analysis is a comparison of paired sales in the same street: an unrenovated sale and a renovated sale of similar size within the same twelve months.
The Perth-Specific Screen
Before shortlisting any property, run three checks that are cheap, fast and decisive in this city.
- The structural walk-through. A builder or engineer identifying which internal walls are load-bearing and what your intended openings would cost. On Perth’s double-brick stock this is the difference between a $150,000 project and a $220,000 one, and it does not appear in any listing.
- The R-Code coding and setbacks. Free from the local government, and it determines whether an extension needs planning approval — worth two to three months of programme.
- Damp and wall ties. Salt damp at the base of walls and horizontal cracking indicating tie corrosion are both expensive and both easy to miss in a cosmetic inspection.
Under $2,500 in total, and together they explain most of the variance between Perth renovation projects that made money and those that did not.
A related guide to consider while planning this work is Knockdown Rebuild vs Renovate in Perth: How to Decide.
The Subdivision Question
Worth raising before any renovation decision in Perth, because the city’s large blocks and varied density codings make it a live option more often than elsewhere.
Where the R-Code coding permits it, subdividing and either building a second dwelling or selling the rear portion can generate more value than renovating the existing house. Perth’s survey-strata and green title subdivision processes are well established and widely used.
Establish the coding first. A property coded R30 or above on a large block is a different investment proposition from the same house coded R20 — and the renovation analysis should follow that question rather than precede it.