What drives the price of a new roof or new cladding, how the main materials compare, and the licensing, insurance, approval and safety rules in each state.
A roof replacement in Australia is priced mostly by the square metre of roof surface, then adjusted for what has to come off, what goes on, how steep and complicated the roof is, and how hard it is to work safely at height. Two quotes for the same house can differ by thousands of dollars simply because one includes new battens, sarking, gutters and edge protection and the other does not.
Start with the roof replacement cost overview, then go deeper on the decision that matters most for your house: tile versus Colorbond, re-roofing versus restoration, asbestos roof removal or wall cladding replacement.
The rules guides cover the thresholds that decide whether your roofer must be licensed, whether home warranty insurance must be in place, when council or a building surveyor needs to be involved, what the combustible cladding reforms mean for houses and apartments, and how bushfire and wind ratings change the specification.
All prices on this site are illustrative examples, not market rates or quotes. Thresholds are stated as at October 2026; always confirm with your state regulator before you sign.
Costs, Price Factors and 2026 Rules
How asbestos cement roofs are identified and removed in Australia, Class A and Class B licences, the 10 m² threshold, disposal, clearance and illustrative cost arithmetic.
Costs, Price Factors and 2026 Rules
How your site's bushfire attack level and wind classification affect roof and cladding materials, fixings, tie-downs, ember protection and cost in Australia.
Costs, Price Factors and 2026 Rules
The post-Lacrosse and post-Grenfell cladding reforms in Australia, the ACP restrictions, state rectification programs, NCC external wall rules and what they mean for owners.
Costs, Price Factors and 2026 Rules
When a re-roof or re-cladding job needs planning approval, a building permit or a certifier in Australia, with heritage, bushfire, structural and material-change triggers by state.
Costs, Price Factors and 2026 Rules
When home building compensation, home warranty or home indemnity insurance must cover a re-roof in Australia, the value thresholds, cover limits and how to check a certificate.
Costs, Price Factors and 2026 Rules
How to tell whether a tiled or metal roof in Australia can be restored or needs replacing, with signs to check, illustrative costs and a worked ten-year comparison.
Costs, Price Factors 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.
Costs, Price Factors and 2026 Rules
State-by-state licence and registration thresholds for roofing and cladding work in Australia, how the job value is measured, roof plumbing rules and how to check a register.
Costs, Price Factors and 2026 Rules
How a pre-painted steel roof compares with concrete and terracotta tiles in Australia on price per square metre, structure, heat, noise, bushfire, wind and maintenance.
Costs, Price Factors and 2026 Rules
Illustrative per-square-metre costs to re-clad an Australian house, how to measure wall area, the extras that add up, and asbestos, bushfire and approval checks.
