Renovations & Extensions in Melbourne
Renovating an existing house is often cheaper than knocking it down and starting over, especially when the bones are good and the location is prized. The catch is that hidden costs (asbestos, dodgy wiring, sagging stumps, non-compliant plumbing) can turn a $250k renovation into a $450k one very quickly.
Best for
- •Character stone and brick homes with sound structure
- •Established suburbs where a knock-down would trigger heritage or character overlay concerns
- •Owners who love their location and want to stay
Typical timeline
A moderate Melbourne renovation typically runs 6 to 12 months on site once consent is secured, plus 2 to 4 months of design and consent lead time.
Council & overlay notes
In Victoria, a new build generally needs a planning permit (where the local planning scheme requires one) and a building permit issued by a registered building surveyor. Overlays such as Bushfire Management, Heritage, Significant Landscape and Development Contributions can apply, and growth-area blocks may attract the Growth Areas Infrastructure Contribution (GAIC). Confirm current requirements with your local council and the Victorian Building Authority before finalising a design.
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Key decisions you'll face
Renovate or rebuild
The tipping point is usually around 60 to 70% of the rebuild cost. Once your renovation reaches that, a knockdown rebuild is usually the better outcome for the same money.
Scope creep control
Renovations are the single hardest project type to keep on scope. Every wall opened reveals another surprise. Set contingency and stick to it.
Live in or move out
Living in a renovation costs less but takes far longer and is genuinely stressful. Moving out costs rent but often shortens the build meaningfully.
Where builds go wrong
Asbestos in pre-1990 homes
Fibro walls, ceilings, eaves and even flooring can contain asbestos. Testing and removal is regulated and costs real money.
Non-compliant existing works
Previous DIY additions or unpermitted rooms can force retrospective compliance during your renovation.
Council notification thresholds
Some renovations that seem cosmetic actually trigger full planning consent. Confirm before you start demolition.
How the process runs
- 1
Get a pre-construction survey
Building inspection, termite check, and if the home is pre-1990, an asbestos report.
- 2
Set the scope and freeze it
Write down what is in and what is out. Every change during construction costs multiples of the design-phase cost.
- 3
Shortlist renovation-experienced builders
Not every new-build builder is set up for renovation. Look for at least five recent renovations in your council area.
- 4
Lodge for consent (if required)
Melbourne consent for a moderate renovation typically takes 6 to 12 weeks.
- 5
Live in or move out and go
Confirm the decision before construction starts. Changing mid-build is disruptive.
Common questions
When should I renovate vs knock down?▾
Roughly, if the renovation cost exceeds 60 to 70% of a rebuild cost, a knockdown is usually the smarter path. The exception is heritage or character-listed homes.
Do I need planning consent for a renovation?▾
Small internal cosmetic work rarely does. Anything structural, external or that changes the building footprint usually does. Ask your builder to confirm.
How do I control cost blow-outs?▾
Get a detailed pre-construction survey (moisture, termite, structural, electrical), set a 15 to 20% contingency, and freeze the scope before contract signing.
Can I live in the house during renovation?▾
For smaller renovations yes, but expect the project to run 30 to 50% longer. For full-house work, moving out is usually cheaper overall.
What about heritage listing?▾
Heritage-listed homes require heritage consent as well as normal planning consent. Speak to a heritage-experienced architect early.
People also ask
People also ask about building in Melbourne
Do I need a planning permit to build a renovation & extension in Melbourne?▾
Every new renovation & extension in Melbourne needs a building permit issued by a registered building surveyor. A separate planning permit is only triggered when an overlay applies — heritage, bushfire (BAL), significant landscape or flooding — or when you go beyond a single dwelling. Check the council planning scheme before you lock in the design.
Which council approves a renovation & extension in Melbourne?▾
Melbourne is covered by more than 30 metropolitan councils, so the planning scheme and overlays depend on which council your block sits in. The council administers the planning scheme and overlays, while your building permit and the mandatory inspections run through a private or municipal building surveyor.
How long does it take to build a renovation & extension in Melbourne?▾
A moderate Melbourne renovation typically runs 6 to 12 months on site once consent is secured, plus 2 to 4 months of design and consent lead time. In Melbourne, add lead time up front for soil tests, surveyor sign-off and any overlay-driven planning permit before site works can start.
Who regulates builders and insurance for a renovation & extension in Melbourne?▾
Victoria's building industry is overseen by the Victorian Building Authority (VBA), which registers builders and surveyors. For domestic building work over $16,000 your builder must take out Domestic Building Insurance (through the VMIA) before you pay a deposit.
People also ask
Building a renovation & extension in Melbourne's top suburbs
Can I build a renovation & extension in Brighton?▾
Brighton is covered by City of Bayside, and most renovation & extension building there is around Church Street precinct, Dendy Street surrounds and near Brighton Beach.
Read the Brighton guide
Can I build a renovation & extension in Camberwell?▾
Camberwell is covered by City of Boroondara, and most renovation & extension building there is around Camberwell Junction, Burke Road and Prospect Hill precinct.
Read the Camberwell guide
Can I build a renovation & extension in Glen Waverley?▾
Glen Waverley is covered by City of Monash, and most renovation & extension building there is around Glen Waverley Activity Centre, Brandon Park and near Mount Waverley.
Read the Glen Waverley guide
Can I build a renovation & extension in Brunswick?▾
Brunswick is covered by City of Merri-bek, and most renovation & extension building there is around Sydney Road, Lygon Street precinct and near Brunswick East.
Read the Brunswick guide
Can I build a renovation & extension in Balwyn?▾
Balwyn is covered by City of Boroondara, and most renovation & extension building there is around Balwyn Road precinct, Whitehorse Road and near Balwyn North.
Read the Balwyn guide
Can I build a renovation & extension in Bentleigh?▾
Bentleigh is covered by City of Glen Eira, and most renovation & extension building there is around Centre Road precinct, near Bentleigh East and McKinnon border.
Read the Bentleigh guide
Can I build a renovation & extension in Preston?▾
Preston is covered by City of Darebin, and most renovation & extension building there is around High Street precinct, Preston Market surrounds and near Regent.
Read the Preston guideCan I build a renovation & extension in Box Hill?▾
Box Hill is covered by City of Whitehorse, and most renovation & extension building there is around Box Hill Activity Centre, Station precinct and near Box Hill South.
Read the Box Hill guideRenovation & Extension guidance for a specific Melbourne suburb
Local overlays, character rules and site conditions all shift the plan. Pick your suburb for a per-suburb read.
Western Melbourne
Northern Melbourne
South-East Melbourne
Also worth considering
Heritage Renovation
Heritage-listed homes are protected under the SA Heritage Places Act.
Second-Storey Addition
Adding a second storey to an existing single-storey home is the cheapest way to add bedrooms without touching your footprint or losing back-yard space.
Granny Flat
A granny flat is a self-contained secondary dwelling on the same block as an existing house.