The short version for Melbourne homeowners
Victoria does not run a single "roof approval" system. Two separate tests can apply to a roof replacement, and they are handled by different people.
The first is the building permit, issued under the Building Act 1993 and the Building Regulations 2018. It is about whether the work is structurally sound and meets the building code. In Victoria a registered building surveyor makes that call. Some surveyors work for councils, many are in private practice, and you can engage either.
The second is the planning permit, issued by your local council under its planning scheme. Planning is about how a property looks, how land is used and whether an overlay such as heritage or bushfire protection applies to your block.
A straightforward swap of worn concrete tiles for new concrete tiles, on the same frame, at the same pitch, frequently needs neither. Once you start changing weight, shape, structure or appearance in a controlled area, one or both may come into play. The only reliable answer comes from a surveyor or council officer who has looked at your actual job.
When a building permit is more likely
Building surveyors look at the effect of the work on the structure and on compliance with the National Construction Code. These are the triggers that tend to come up on Melbourne re-roofs:
- Heavier roofing. Moving from a lightweight steel sheet to concrete or terracotta tiles adds substantial load to rafters, battens and walls. The frame may need checking by an engineer.
- Changes to the roof form. Altering the pitch, raising the ridge, adding a dormer or converting a hip to a gable is building work in its own right.
- Replacing or modifying structural timbers. Sagging or rotted rafters, purlins or trusses that need replacing rather than patching usually bring a surveyor into the picture.
- Bushfire-prone land. Where AS 3959 construction requirements apply, the new roof may have to meet a Bushfire Attack Level (BAL) rating.
- Additions under the new roof. If the re-roof is part of an extension, the permit for the extension normally covers the roof.
None of this means every tile-to-steel job needs a permit. Going lighter is generally less concerning to a surveyor than going heavier. But the decision belongs to the surveyor, not to a quote form or a contractor's assurance.
When a planning permit is more likely
Planning controls vary from one municipality to the next, so what is fine in Werribee may need a permit in Richmond. Three overlays come up again and again.
Heritage Overlay
Large parts of the inner north and inner east sit under heritage controls. In the City of Yarra, for instance, streets of Victorian and Edwardian terraces with slate roofs and cast-iron lace are common. Changing slate to Colorbond steel, or even changing a roof colour visible from the street, can require a planning permit. Some councils have guidelines that prefer like-for-like slate or terracotta on contributory buildings.
Bushfire Management Overlay
Parts of Cardinia Shire, the City of Casey's rural edges and the outer east towards the Dandenong Ranges carry a Bushfire Management Overlay. Work in these areas can need a planning permit as well as BAL-compliant construction. Our bushfire season preparation guide covers the roof details involved.
Neighbourhood character and other overlays
Some estates carry design guidelines or covenants on title that restrict roof colour or material. These are not council permits, but they can still bind you. Check your title and any estate rules if you live in a newer subdivision around Pakenham, Berwick or Wyndham City.
Quick reference: typical scenarios
The table below is a general guide only. Your surveyor or council has the final say.
| Scenario | Building permit? | Planning permit? |
|---|---|---|
| Old concrete tiles replaced with new concrete tiles, same frame | Often not required | Rarely, unless an overlay applies |
| Tiles replaced with Colorbond steel, no structural work | Often not required | Possible in a Heritage Overlay |
| Steel replaced with terracotta or concrete tiles | Likely, to check frame load | Possible in a Heritage Overlay |
| Pitch, ridge height or roof shape changed | Likely | Possible, depending on zone and overlays |
| Re-roof in a Bushfire Management Overlay | May be needed for BAL compliance | Possible |
| Slate on a heritage terrace replaced with steel | Depends on structure | Commonly required |
| Rotten rafters or trusses replaced | Likely | Rarely |
How to check before work starts
A little homework early on saves delays once scaffolding is up. Work through these steps in order.
- Look up your overlays. Victoria's planning property reports are free online and list every zone and overlay on your block. Print it and keep it with your quotes.
- Describe the job in one paragraph. Note the existing roof, the proposed roof, any structural work and whether anything visible from the street will change.
- Call council planning. Ask whether that description triggers a planning permit under your overlays. Note the name of the officer and the date.
- Talk to a registered building surveyor. Ask whether a building permit is needed. If it is, the surveyor can issue it once drawings or engineering are supplied.
- Confirm who lodges what. If your contractor is applying, get the permit number in writing before work begins.
- Keep everything. Permits, inspection records and the roof plumber's compliance certificate belong in your property file for future sale or insurance claims.
Expect permit fees, surveyor fees and any engineering to sit on top of the roofing price. Our roof replacement cost guide explains how those extras feed into the overall budget.
The roof plumbing side
Even where no building permit is needed, the gutters, flashings, valleys, downpipes and sheet metal on your roof are regulated plumbing work in Victoria. Whoever does that part should be registered or licensed in the roofing (stormwater) class.
The register used to be run by the Victorian Building Authority. In 2025 its functions moved to the Building and Plumbing Commission, so search the current register on that body's site rather than relying on an old card or a logo on a van. For qualifying work, a licensed plumber must issue a compliance certificate when the job is finished. Ask for it and file it.
Asbestos is a separate matter again. If your house was built before 1990 and has fibre cement sheeting on the roof or eaves, read our asbestos roof removal guide before anything is cut or lifted.
Where heritage roofs need extra care
Slate and terracotta roofs on period homes in the inner suburbs bring their own complications. Councils may expect salvaged or matching materials, original ridge capping details and terracotta finials to be retained. Box gutters hidden behind parapets often need rebuilding at the same time, and that is roof plumbing work that should be done properly and certified.
If you are weighing up slate restoration against full replacement, our slate roof replacement page outlines the options. Terracotta on Federation homes and bungalows raises similar questions about matching profiles and colours.
How the quote process fits in
Roof Repair Melbourne VIC is a referral service. We arrange free on-site quotes from independent local roofing contractors rather than doing the work ourselves. When a contractor visits, ask them directly whether they think your job needs a building or planning permit and how they would handle the application. A good contractor will tell you when something needs a surveyor's opinion rather than guessing.
We expect the contractors we work with to carry the registrations and insurance the job calls for, but please sight those documents yourself before signing anything. If you would like a quote for a re-roof, start with our re-roofing service page or get in touch.
Final checks before the old roof comes off
- Planning property report printed and overlays noted.
- Council planning officer's answer recorded.
- Building surveyor's advice, and permit number if one was issued.
- Engineering report if the roof is getting heavier or structural timbers are changing.
- Roof plumber's registration checked on the current register.
- Asbestos testing done if the home predates 1990 and has suspect sheeting.
Tick those off and the permit question will not come back to bite you halfway through the job, or years later when you sell.