Costs, Price Factors and 2026 Rules
Roof replacement cost per square metre in Australia: price factors, comparison and 2026 rules
What sets the price of a new roof in Australia, illustrative per-square-metre ranges for steel, tile, restoration and asbestos jobs, and the rules to check in 2026.
A roof replacement in Australia is priced mainly by the square metre of roof surface, then adjusted for the material, what has to be removed, the pitch and shape of the roof, the number of storeys and the safety equipment needed to work at height. As an illustrative guide only, this site uses ranges such as $90–$160 per m² to replace concrete tiles with pre-painted steel, $80–$140 per m² for a like-for-like concrete tile re-roof, $120–$220 per m² for terracotta, and $25–$60 per m² for a tile restoration, plus several thousand dollars of fixed costs. These are not market rates or quotes. The way to get a reliable figure for your house is to measure the roof yourself, work out which option you actually need, and compare at least three written quotes from licensed contractors.
This overview links to every guide in the costs and rules section. Use it to find the decision that matters for your roof.
What you are paying for in a roofing quote
Almost every re-roof quote is made up of the same building blocks. Seeing them separately makes it easier to compare quotes and spot gaps.
| Cost item | What it covers | Scales with |
|---|---|---|
| Strip and dispose | Removing old tiles or sheets, ridge capping, sometimes battens; skip bins and tip fees | Roof area and weight of material |
| Asbestos removal | Licensed removal, wrapping, transport and disposal at an approved facility | Area of asbestos material |
| Battens and structure | Replacing or adding battens, repairing rotten rafters, upgrading tie-downs | Condition of the frame and wind rating |
| Sarking or insulation blanket | Reflective foil or blanket under the new roof | Roof area |
| New roof covering | Steel sheets, concrete tiles or terracotta tiles, fixings | Roof area and product choice |
| Flashings, ridges and valleys | Folded steel trims, ridge and hip capping, valley irons | Length of ridges, hips, valleys and walls |
| Gutters, fascia and downpipes | New or retained roof plumbing | Lineal metres of eaves |
| Safety and access | Edge protection, scaffold, roof anchors, traffic management | Storeys, site access and duration |
| Approvals and certificates | Building permit or certifier fees where needed, compliance certificates | Fixed per job |
A quote that is much lower than the others is often missing one or more of these lines, usually sarking, gutters, edge protection or asbestos disposal. The quote comparison guide shows how to line them up.
Illustrative price ranges by type of job
The table below shows the illustrative ranges used throughout this site and in the re-roof cost estimator. They include GST and labour and materials, but exclude structural repairs, gutters beyond a simple replacement, and bushfire or cyclone upgrades.
| Job | Illustrative range per m² of roof surface | Typical reason |
|---|---|---|
| Tile roof restoration | $25–$60 | Sound tiles but worn ridges, moss, faded surface |
| Metal re-sheet over existing metal | $70–$130 | Rusted or leaking steel roof on a sound frame |
| Tile to pre-painted steel | $90–$160 | Cracked or porous tiles, leaks, desire for a lighter roof |
| Concrete tile re-roof | $80–$140 | Keeping a tiled look |
| Terracotta tile re-roof | $120–$220 | Heritage streetscape or preference for terracotta |
| Asbestos cement sheet removal plus new steel | $130–$230 | Weathered fibro or corrugated asbestos roofs on pre-1990 houses |
Worked example (illustrative). A single-storey brick veneer house has a hip roof with a plan area of 190 m² including eaves and a pitch of 22.5°. The roof surface is about 190 × 1.08 = 205 m². Replacing concrete tiles with steel at $90–$160 per m² gives 205 × 90 = $18,450 to 205 × 160 = $32,800. Add $4,500 of fixed costs for edge protection, skips and a certifier and the range is $22,950 to $37,300. A quote of $14,000 for that job would deserve close questions about what is left out. A quote of $55,000 would deserve questions about what extra work is included.
The factors that move the price most
Material and profile
Pre-painted steel (often called by the brand name Colorbond, a BlueScope trade mark), unpainted zinc-aluminium coated steel, concrete tiles and terracotta tiles have very different material costs and installation times. Steel is light and quick to install in large sheets; tiles are laid one by one. The tile versus Colorbond guide compares them on cost, weight, noise, heat and lifespan.
Repair, restore or replace
Many tiled roofs do not need replacing. If the tiles and battens are sound, a restoration may solve the problem for a fraction of the price. If the tiles are porous, the battens are rotten or the roof leaks in several places, a restoration only delays the cost. See re-roofing versus restoration.
Asbestos
Houses built before about 1990 may have asbestos cement roof sheets, flues, eaves linings or wall cladding. Removing more than 10 m² of non-friable asbestos needs a licensed removalist, which changes both the price and the timeline. See the asbestos roof guide.
Pitch, shape and storeys
A steep roof needs more safety equipment and slows work down. A complex roof with hips, valleys, dormers and box gutters needs more flashings and more cutting, which adds labour and waste. A two-storey house usually needs scaffold rather than simple edge protection.
Location, access and timing
Regional jobs can carry travel costs. Tight access, steep blocks and busy streets add time. Demand after major storms can push prices and waiting times up, which is also when storm chasers are most active.
Site ratings
A house in a bushfire-prone area may need products and details that meet its bushfire attack level under AS 3959. A house in a high wind or cyclone region needs fixings and tie-downs to match its wind classification. See bushfire and wind requirements.
The rules to check in 2026
The rules are set by each state and territory, so the same job can need different paperwork in Brisbane, Sydney, Melbourne and Perth.
- Licensing. Queensland requires a QBCC licence for most building work over $3,300. NSW requires a licence for residential building work over $5,000. Victoria requires registration for domestic building work above its threshold, and metal roofing and roof plumbing is regulated plumbing work. See licence thresholds by state.
- Home warranty insurance. Required above set values, for example over $20,000 in NSW and over $3,300 for roof work in Queensland. Victoria moved to a first resort Home Warranty insurance scheme for work over $20,000 from 1 July 2026. See home warranty insurance thresholds.
- Deposits. Capped by law in most states, from 5% to 10% for typical re-roof values. See the deposit guide.
- Approvals. Like-for-like re-roofing often needs no planning approval, but heritage overlays, a change of material or structural work can change that. See council approval for re-roofing.
- Cladding. The combustible cladding reforms mainly affect apartment and multi-storey buildings, but house owners re-cladding walls should still know the basics. See combustible cladding rules and the wall cladding cost guide.
When to get professional advice
Get an independent building consultant or structural engineer if the roof sags, if you are unsure whether the frame can take a heavier tiled roof, or if two contractors disagree about whether the roof needs replacing. For storm damage, talk to your insurer before replacing anything, because removing the evidence can complicate a claim.
Frequently asked questions
How long does a typical re-roof take?
A straightforward single-storey steel re-roof can take a few working days once materials are on site. Tile roofs, asbestos removal, two-storey houses and wet weather all add time. Ask each contractor for a start date, an expected duration and how weather delays are handled in the contract.
Is the price per square metre based on the floor area?
It should be based on the roof surface, which is larger than the floor area because of the eaves and the pitch. Measure the plan area of the roof including eaves and multiply by a pitch factor. The roof area guide explains how.
Do roofing quotes include GST?
Quotes to homeowners should state clearly whether GST is included. Licensing and insurance thresholds in most states are measured including GST and including labour and materials, so use the GST-inclusive figure when you check them.
Can I replace just part of the roof?
Yes. Partial replacement is common where one roof plane is damaged or where an extension is added. Matching old tiles or old steel colours can be difficult, so ask how the join will look and be weatherproofed.
Sources
- Australian Building Codes Board — the National Construction Code that applies to roofs and walls
- Queensland Building and Construction Commission — Queensland licensing, home warranty and contracts
- Building and Plumbing Commission Victoria — Victorian registration, plumbing licensing and Home Warranty insurance
- NSW Government building and renovating — Building Commission NSW information on licences, contracts and home building compensation
- Safe Work Australia — national model rules on asbestos and working at heights
