Roof replacement in Australia is usually priced per square metre, and as a rough guide a metal (Colorbond) reroof often runs in the order of $60 to $130 per square metre supplied and fitted. For a whole house that commonly lands somewhere in the thousands to low tens of thousands, and the only figure that really counts is the one a licensed roofer writes on your actual quote.
That range is wide on purpose. The price moves with the material you choose, the pitch and complexity of the roof, how easily a crew can get up there and move materials around, and what they find once the old roof comes off. Below we break down the per square metre rates, the total picture, and the quiet extras that push the bill up. (Figures are indicative only and were last checked June 2026.)
Roof replacement cost per square metre
The number most people search for is the per square metre rate, so let us start there. As a rough guide for June 2026, a straightforward metal reroof in Colorbond commonly sits around $60 to $130 per square metre supplied and fitted. Tiled roofs, and any roof that is steep or fiddly, tend to cost more than that because they take longer and need more care.
A few things to hold in mind when you read those numbers. Rates can ease a little on bigger, simpler roofs because the fixed costs of getting a crew and gear on site get spread across more area. A small or chopped up roof with lots of valleys, hips, and penetrations can cost more per square metre than a big plain one, which surprises people. And material choice matters: stripping tiles and switching to metal is a different job to a like for like replacement.
What a whole reroof actually costs
Per square metre rates are handy for comparing materials, but they are not what lands in your inbox. A roofer quotes the whole job, folding in the material, labour, removal and disposal of the old roof, scaffolding or access gear, flashings, and the cleanup. For a typical house that usually means a total somewhere in the thousands to low tens of thousands, with larger, steeper, or more complex roofs climbing from there.
To turn a rate into a ballpark, you need the roof area, not the floor area, because a pitched roof has more surface than the footprint underneath it. As a very rough gut check, multiply your floor area by a pitch factor of around 1.2 to 1.5, then multiply that by a rate from the discussion above. It is useful for a sanity check and nothing more, because it ignores every site specific cost that follows. This is the same trap people fall into across home renovation costs in Australia: the headline rate is the easy part, and the site is where the money actually goes.
The rate per square metre tells you about the material. The quote tells you about your roof.
The cost drivers that move the price
This is where two roofs of identical size end up thousands of dollars apart. None of these show up cleanly in a per square metre figure, which is exactly why a proper inspection matters before anyone commits to a number.
- Material. Colorbond and other metal sheeting, concrete tiles, terracotta tiles, and slate all sit at different price points and weights. Swapping from tile to metal can also mean batten and structural changes, which adds cost.
- Pitch and complexity. A steep roof needs more safety gear and slows the crew down. Lots of valleys, hips, dormers, skylights, and flues all add labour and flashing work.
- Access. A single storey home with clear ground around it is cheap to work on. A double storey, a tight block, or a roof a truck cannot get near means more scaffolding, more handling, and more hours.
- Structural repairs. Once the old roof is off, rotten battens, sagging rafters, or damaged sarking sometimes appear. Good quotes flag this as a possibility rather than pretending it cannot happen.
- Asbestos. Older roofs, particularly some cement sheeting, can contain asbestos that must be removed and disposed of by a licensed professional under strict rules. This is a serious, specialised cost and not a corner anyone should cut.
Removal and disposal of the old roof
Stripping the existing roof, getting it down safely, and carting it to the tip is a real line item that a bare per square metre rate can gloss over. On a heavy tiled roof there is a lot of weight to move, and tip fees add up. If asbestos is involved, this part of the job changes entirely and must follow the official rules, so confirm the current requirements with your state regulator and only use appropriately licensed removalists.
Repairs you cannot see from the ground
The honest reality of reroofing is that some costs only reveal themselves once the work starts. A roofer can give you a firm price for the visible job and a clear allowance, or at least a warning, for what might be lurking underneath. A quote that pretends the timber below is guaranteed perfect is a quote to be wary of.
How to get a reliable quote
Because the spread is so wide, the quote does almost all of the useful work here, and the way you gather quotes matters as much as the numbers on them. Get a few itemised quotes rather than one, so you can compare line by line instead of staring at a single lump sum. A good quote spells out the material and profile, the area, what is included in access and removal, how repairs and surprises will be handled, and the warranty on both the product and the workmanship.
Before you let anyone onto your roof, check that they are properly licensed for roofing work in your state and that they carry current insurance, because working at height on someone else’s home carries real risk. This is the same diligence we walk through in how to find a good tradie, and it is worth the extra afternoon. When you are ready to line up comparisons, you can get quotes from licensed roofers and use the itemised detail to sort the careful operators from the phone guessers. The same site visit logic applies if a reroof is bundled into something bigger, like a house extension, where the roof is only one moving part of the total.
This article is general information only and is not personal financial, tax, or legal advice. Costs, materials, and the rules around asbestos and licensing change over time, so confirm current requirements and pricing with your roofer, your insurer, and the relevant authority in your state before you commit.
The bottom line
A metal reroof in Australia often runs roughly $60 to $130 per square metre supplied and fitted as of June 2026, with tiled, steep, and hard to reach roofs costing more, and a whole house commonly landing in the thousands to low tens of thousands. Those ranges are indicative and nothing more. The figure that matters is on an itemised quote from a licensed, insured roofer who has actually been up and looked, and who has been straight with you about what might sit under the old roof once it comes off.