The house renovation cost per square metre in Australia is the number almost every homeowner asks for first — and the one most likely to mislead them if it’s used carelessly. It’s a genuinely useful budgeting tool, but a whole-house renovation is really several different jobs wearing one trench coat: cosmetic refreshes, wet-area rebuilds, structural work and extensions all price very differently per square metre.
In 2026, Australian house renovations range from roughly $1,200 per square metre for a cosmetic refresh to $8,000+ for structural extensions, with a standard full-house renovation typically between $3,000 and $5,000 per square metre. This guide breaks down what each band buys, what drives costs up or down, how Sydney, Melbourne and Brisbane compare, and how to keep your budget under control.
House renovation cost per square metre in 2026: the three bands
Match the rate to the *type* of work, not just the floor area. 2026 industry benchmarks fall into three bands:
| Project type | Cost per square metre | Typical total | What it covers |
| Cosmetic / light renovation | $1,200–$2,500 | $20,000–$80,000 | Repainting, floor sanding or overlay, new fixtures, lighting updates, cabinet door replacement — no structural changes, usually no council approval |
| Major / full internal renovation | $3,000–$5,000 | $80,000–$300,000+ | New kitchen and bathrooms, flooring, rewiring, re-plumbing, removing non-load-bearing walls, new windows and doors |
| Structural extension | $5,000–$8,000+ | $150,000–$550,000+ | Second storeys, ground-floor extensions, new slabs, moving load-bearing walls, council DA or CDC approval, engineering |
These bands line up with Archicentre Australia’s CostGuide 2026: new construction including extensions at an indicative $2,700 to $5,100 per square metre, and work inside an existing building at $1,600 to $3,900. Note those figures cover the basic shell — kitchens, bathrooms, structural upgrades, asbestos removal, fees and temporary accommodation sit outside them, which is where most budgets blow out. See Archicentre Australia’s cost advice for independent guidance.
HIA analysis reported in 2026 shows renovation spending up 23 percent since 2020, with $4.15 billion spent in the June 2026 quarter alone — a record. You’re budgeting in the busiest renovation market Australia has ever seen.
Full house renovation cost breakdown
For a major whole-house renovation, the budget typically splits across these components. Kitchens and bathrooms are priced as wet-area fitouts on top of shell rates — about $17,500 to $35,000 and $23,000 to $49,000 respectively per Archicentre’s 2026 guide.
| Cost component | Share of total budget | Typical 2026 range |
| Kitchen | 15–25% | $25,000–$80,000 |
| Bathrooms and laundry | 15–20% | $17,500–$40,000 per bathroom |
| Structural work and framing | 10–15% | $15,000–$60,000 |
| Electrical (rewire, switchboard, lighting) | 8–12% | $8,000–$25,000 |
| Plumbing and gas | 8–12% | $8,000–$25,000 |
| Flooring | 8–12% | $10,000–$40,000 |
| Painting (internal and external) | 5–8% | $6,000–$20,000 |
| Windows and doors | 5–10% | $8,000–$35,000 |
| Roofing and gutters (if required) | 5–10% | $10,000–$30,000 |
| Design, approvals and contingency | 10–15% | $10,000–$50,000 |
Kitchens and bathrooms dominate because they’re the most expensive rooms per square metre — often two to three times the rate of a bedroom refresh. That’s why renovators who budget one flat rate across the whole floor plan run short exactly where it hurts most.
Don’t forget the invisible line items: switchboard upgrades in older homes ($1,000–$3,000), asbestos or lead paint removal, temporary accommodation, and professional fees. Archicentre’s guide notes the overall cost structure runs roughly 46 percent materials, 33 percent labour and 21 percent fees, levies, permits, taxes and GST.
Factors affecting your house renovation cost
Scope and structural complexity
Scope is the master variable. A cosmetic refresh that keeps the footprint, walls and services untouched is a fundamentally different job — and price — from one that moves load-bearing walls. Structural work triggers engineering, certification and council approvals (DA or complying development), each adding cost and months. Extensions must also meet 7-star NatHERS energy compliance for new work, affecting glazing and insulation decisions.
Age and condition of the home
Older homes hide expensive surprises: asbestos, lead paint, undersized wiring, corroded plumbing, termite damage, rising damp and footings needing underpinning. Pre-1980s homes should carry a larger contingency and, ideally, a pre-renovation inspection to map the surprises. Homes in sound condition with good access renovate far cheaper per square metre than homes needing structural remediation first.
Kitchens and bathrooms
As the dearest rooms per square metre, the number and standard of wet areas set the tone for the whole budget. Two bathrooms plus a powder room at mid-range standard can absorb $60,000 to $90,000 before you’ve touched a bedroom. If the budget is tight, renovate wet areas properly once — they’re the rooms buyers and valuers notice, and the ones that fail first if done cheaply.
Materials and finish level
Finish level compounds across a whole house. Stepping every tap, tile, door handle and light fitting up one tier can add tens of thousands. The smart approach is selective splurging: invest where hands and eyes land daily (kitchen benchtops, bathroom tapware, flooring, front door) and economise where they don’t (wardrobe interiors, laundry, spare bedrooms).
Labour, approvals and site access
Labour is roughly a third of total project cost, and it varies sharply by location and site difficulty. Steep blocks, narrow terrace access and heritage overlays all add days — and day rates — to a job. Council approval timelines cost too: every month waiting on a DA is a month of holding costs. For simple internal work needing no approval, the savings aren’t just the fees; it’s the months you get back.
City differences: house renovation cost per square metre across Australia
Sydney
Sydney is the country’s most expensive renovation market, and the gap is real. Comprehensive renovations run $2,000 to $4,000 per square metre, mid-range whole-house projects $4,400 to $6,000, and high-end work $6,000 to $8,000+ per square metre. Labour shortages are chronic and reputable builders book out months ahead. The flip side: Sydney’s property values mean well-executed renovations are the most likely in the country to return their cost at sale.
Melbourne
Melbourne sits below Sydney but above the national average, with a deep trade base keeping pricing competitive. Mid-range whole-house renovations sit around $2,160 per square metre for standard finishes in 2026 figures, rising past $5,000 for high-end bespoke work with structural changes. Heritage overlays across the inner suburbs add permit complexity — check your overlay before assuming a straightforward internal renovation.
Brisbane
Brisbane and south-east Queensland offer the best value of the three east-coast capitals. Cosmetic renovations run $2,300 to $4,000 per square metre, mid-range $4,000 to $5,500, and premium $5,500 to $7,500+. The construction boom has expanded the trade base, though busy periods still stretch lead times. Queensland’s climate is a genuine cost factor: plan for termite management, ventilation and moisture-resistant materials from the start.
Our renovation costs Australia 2026 guide walks through total project budgets beyond the per-square-metre view.
Money-saving tips for your house renovation
- Renovate within the existing footprint. Working inside the current walls avoids structural engineering, council approvals and new-construction rates — it’s the cheapest square metre you’ll ever renovate.
- Keep plumbing where it is. Relocating bathrooms and kitchens — especially on concrete slabs — is one of the fastest ways to inflate a budget.
- Get a pre-renovation inspection. A few hundred dollars identifying asbestos, structural issues and service upgrades before you start beats discovering them mid-demolition.
- Collect three genuinely comparable quotes. Same scope, same inclusions, same exclusions — otherwise you’re comparing wish lists, not prices.
- Hold a 10 to 15 percent contingency. Whole-house renovations uncover hidden problems almost by definition. The contingency isn’t pessimism; it’s the budget for reality.
- Do unlicensed work yourself. Demolition, rubbish removal, painting and landscaping are legitimate DIY savings; leave structural, electrical, plumbing and waterproofing to licensed trades.
- Estimate before you commit. Our free renovation tools can help you sanity-check your whole-house budget before you start collecting quotes.
Frequently asked questions
What is the average house renovation cost per square metre in Australia in 2026?
It depends on scope: cosmetic refreshes $1,200–$2,500 per square metre, major full-house renovations $3,000–$5,000, and structural extensions $5,000–$8,000+. Archicentre’s CostGuide 2026 puts work inside an existing building at $1,600–$3,900 per square metre for the basic shell, with wet areas and structural work priced separately on top.
Is it cheaper per square metre to renovate or to knock down and rebuild?
Renovation usually wins for cosmetic and moderate work, since you’re reusing the structure, roof and services. But major structural changes, second storeys or extensive remediation can push the per-square-metre cost toward new-construction rates ($2,700–$5,100 per Archicentre’s 2026 guide) — at which point a knockdown rebuild deserves a serious comparison.
How much does a full house renovation cost in Sydney in 2026?
Typically $150,000 to $500,000+ depending on size, condition and finish, or roughly $2,000 to $4,000 per square metre for comprehensive work. Mid-range projects land between $4,400 and $6,000 per square metre; high-end reach $6,000–$8,000+.
Do I need council approval for a house renovation?
Internal cosmetic work — painting, flooring, kitchen and bathroom replacements within the existing layout — generally proceeds without approval. Structural changes, extensions, second storeys and work on heritage properties typically require a DA or complying development certificate (CDC). Check with your local council.
What contingency should I allow for a house renovation?
Allow 10 percent for straightforward cosmetic renovations and 15 percent (or more) for major renovations of older homes. Pre-1980s properties almost always uncover hidden issues — and a contingency you don’t spend beats a stalled project you can’t afford to finish.