Renovation ROI in Australia: which improvements actually pay off

Most renovations in Australia don't return what they cost. Australian Institute of Quantity Surveyors data and the major valuation firms have been saying the same thing for a decade: kitchens and bathrooms recover roughly 60 to 80 cents per dollar spent at resale on a well-priced reno, landscaping punches above its weight, and pools usually return less than they cost in suburbs where buyers don't expect one. The exceptions exist, but they're narrower than the renovation TV would have you believe.

The ROI ranking, room by room

On a cosmetic-to-mid-tier reno priced for the suburb, the rough return-on-spend rankings line up like this:

• Kitchen: 60 to 80% of spend recovered at sale. Higher when you keep the layout and replace surfaces; lower the moment you move plumbing or knock out a wall.
• Bathroom: 65 to 80%. Tiling, vanity, and a frameless shower screen do most of the work. Re-routing waste lines is where budgets blow.
• Paint, floors, light fittings: often 100%+ on a tired property. Cheap to do, visible from the listing photos.
• Landscaping and street appeal:100 to 150% on a property the agent describes as "neglected". This is the only category where the cliché holds.
• Pools: 30 to 50% in most suburbs. Closer to break-even in Queensland or in pockets where buyers expect one. Almost never a profit centre.
• Extensions and second storeys: highly variable. Often loss-making once you cost site works, engineering, and the holding cost of the build period.

The ceiling-price trap

Every suburb has a ceiling price. Look at the last 12 months of comparable sales for your street type and dwelling configuration. If three-bedroom houses on similar blocks have topped out at $780,000, a renovation that takes your finished property past that number is funding the next buyer's lifestyle, not yours.

A worked version of the trap. You buy at $700,000. Comparables cap around $780,000. You spend $80,000 on a designer kitchen. The valuer doesn't care that the splashback came from Italy. They care what the last five sales did. You list, you sell at $785,000, and the $80,000 you spent has returned $85,000 of price uplift on a generous read. Subtract agent fees, styling, and the months of holding cost, and the margin is gone. The kitchen lifted the floor of the property; it didn't lift the ceiling of the suburb.

Research recent sold comparables before you scope the reno, not after. The sale price ceiling is the budget ceiling, working backwards.

Cosmetic vs structural: the 70:30 rule

A $20,000 cosmetic refresh almost always outperforms a $120,000 strip-and-replace on a resale-driven reno. Paint, floors, light fittings, kitchen handles and benchtop, fresh window treatments, and a deep clean change how a property photographs and how it feels in the first 30 seconds of an inspection. Buyers price what they see.

For renovations aimed at sale within 18 months, a 70:30 split of cosmetic to structural usually beats an even split. Spend the bulk on what photographs, fix the structural issues that would kill the building inspection (drainage, roof, obvious damp), and leave the rest for the next owner to make their own.

Investor renos vs resale renos

These are different jobs and they get scoped differently. A resale reno is about lifting the comparable sale price within the suburb's ceiling. An investor reno is about lifting weekly rent.

A $15,000 bathroom on a tired rental can lift weekly rent by $30 to $60. At $45 a week extra rent, that's $2,340 a year of gross uplift, a yield-on-cost of around 15%, before the rental loss benefit and before any sale-price uplift on the improvement. That's why investor renos go hard on the durable, mid-tier finish (porcelain tile, framed shower, basic vanity) and skip the marble. The rental yield calculator will model the rent-uplift case directly. Plug in the post-reno rent estimate and see what the yield-on-cost actually looks like.

The tax distinction that costs people money

Capital improvements aren't immediately deductible. They're added to the cost base of the property and reduce your capital gain when you sell. A $40,000 kitchen on an investment property sits in the cost base until disposal, then reduces CGT at your marginal rate, with the 50% discount if you've held over twelve months.

Repairs to restore (not improve) are deductible in the year you incur them. Replacing a broken hot water system with a like-for-like unit is a repair. Upgrading from a 50L electric to a heat-pump system with extra capacity is an improvement. The ATO has lost patience with people calling improvements repairs; the line is narrower than property forums suggest.

Before you start, sketch the after-tax position. The capital gains tax calculator on Burbfinder lets you add capital improvements to the cost base and see how a 70:30 cosmetic-to-structural mix flows through to the eventual CGT bill versus an even split.

A worked $75,000 example

You own a $750,000 unit. Recent comparable sales in the building and the next two streets cap around $820,000. You scope the reno: $40,000 kitchen, $25,000 bathroom, $10,000 cosmetic (paint, floors, light fittings). Total spend: $75,000.

Plausible new sale price: $830,000. Gross uplift over the unrenovated pre-reno valuation: $80,000. Subtract the $75,000 of spend and you're ahead by $5,000 on paper, before agent commission of around 2% ($16,600), before styling and photography, and before any holding cost during the works. After fees, the project is roughly break-even or modestly negative.

The same $75,000 left in a balanced ETF portfolio at 7% nominal for the 18 months the reno-to-sale cycle takes returns roughly $7,500 to $8,000 with no project management, no contractor risk, and no waterproofing failures. Run those numbers honestly before the demo crew arrives, not after.

DIY, trades, and the rework risk

DIY saves labour cost. It also concentrates rework risk on the three categories most likely to bite: plumbing, electrical, and waterproofing. A failed waterproofing job in a second-storey bathroom is a five-figure remediation, often with insurance complications. A botched electrical job is uninsurable and unsellable until a licensed sparkie certifies the work.

Sensible split: do your own painting, your own demo, your own landscaping, your own flat-pack assembly. Pay the trade for anything that touches a pipe, a wire, or a wet area. The hourly rate looks expensive. The rework bill is worse.