## When Do You Need a Building Permit?
In Victoria, a building permit is required for bathroom renovation work that goes beyond cosmetic changes. The Victorian Building Authority (VBA) sets the rules, and permits are issued by registered building surveyors — either municipal or private.
You will generally need a building permit when your renovation involves:
- Structural work — Removing or altering load-bearing walls, changing the room layout, or expanding the bathroom into adjacent spaces
- Plumbing changes — Relocating the toilet, shower, basin, or bath from their current positions. Note that plumbing work must always be carried out by a licensed plumber, and a plumbing compliance certificate is required regardless of whether a building permit is needed
- New wet areas — Converting a non-wet space (such as a bedroom) into a bathroom
- Electrical work — Significant electrical changes require a licensed electrician and may trigger permit requirements depending on scope
If you are unsure whether your project needs a permit, a registered builder can assess the scope and advise you before work begins.
When You Don't Need a Permit
Not every bathroom renovation requires a building permit. The following types of work are generally exempt:
- Cosmetic updates — Repainting walls, replacing mirrors, updating accessories, and installing new towel rails
- Like-for-like fixture replacements — Swapping a toilet, basin, or tapware for a new unit in the same location without altering plumbing runs
- Vanity replacement — Installing a new vanity in the existing location with the same plumbing connections
- Re-grouting and minor repairs — Fixing cracked tiles, replacing grout, or repairing minor damage
Even when a building permit is not required, any plumbing or electrical work must still be completed by licensed tradespeople who issue compliance certificates.
The Role of a Registered Building Practitioner
In Victoria, all building work that requires a permit must be carried out by — or under the supervision of — a registered building practitioner. The VBA maintains a public register of licensed builders, and you can verify registration before engaging anyone.
Why registration matters:
- Accountability — Registered builders are bound by the Building Act and can be held accountable for defective work
- Insurance — Registered builders must carry appropriate insurance, including domestic building insurance for projects over a certain value
- Warranties — Work carried out by registered practitioners is covered by statutory warranties under Victorian law
- Inspections — A registered building surveyor conducts mandatory inspections at key stages to ensure compliance
At DWS Building Co, we are registered building practitioners with the VBA. You can learn more about our qualifications on the about page.
Heritage Overlays and Council Rules
If your property is in a heritage overlay zone, additional planning permits may be required — even for work that would otherwise be straightforward.
How heritage overlays affect bathroom renovations:
Heritage overlays are managed by your local council. In the areas we service, the key councils include:
- City of Moonee Valley — Covers Essendon, Moonee Ponds, Airport West, Avondale Heights, and parts of East Keilor. Heritage overlays are concentrated in Essendon and Moonee Ponds, particularly around historic village centres.
- City of Maribyrnong — Covers Maribyrnong, Seddon, Yarraville, and Footscray. Heritage overlays exist around village centres and some residential streets.
- City of Brimbank — Covers Tullamarine, Keilor Park, and parts of East Keilor. Heritage overlays are less common in these suburbs.
What to check:
- Heritage overlays typically restrict external changes to the building's facade, roofline, and visible streetscape
- Internal renovations — including bathrooms — are generally not affected by heritage overlays, but it's worth confirming with your council or building surveyor
- If your property requires a planning permit, this is a separate process from the building permit and may involve additional time and fees
We recommend checking your property's planning overlays early. You can search your address on your council's planning map or ask us — we check overlay status as part of every project.
View all the suburbs we service and their council areas on our areas served page.
Frequently Asked Questions
Do I need a permit to retile my bathroom?
If you are retiling without changing the layout, plumbing, or waterproofing membrane, a building permit is generally not required. However, if the retiling is part of a larger renovation that involves waterproofing or structural changes, a permit may be needed.
How much does a building permit cost for a bathroom renovation?
Building permit fees vary depending on the project value and the building surveyor you engage. For a typical bathroom renovation, permit fees generally range from a few hundred to around one thousand dollars. Your builder can provide a more specific estimate based on your scope.
Can my builder handle the permit process?
Yes. A registered builder typically manages the building permit application on your behalf, coordinates mandatory inspections with the building surveyor, and ensures all compliance certificates are obtained. This is a standard part of our process at DWS Building Co.
What happens if I renovate without a required permit?
Renovating without a required building permit is a breach of the Building Act in Victoria. It can result in fines, orders to undo or redo work, and complications when selling your property. Unpermitted work may also void your home insurance. Always confirm permit requirements before starting.
*Have more questions about permits or planning? Check our FAQs page or get in touch to discuss your project with our team.*
