For bay window roofs expect to pay from 350 900 and for dormer window roofs between 700 1 300.
How much would a flat roof extension cost.
Size a small roof will be more affordable than a large roof.
Well before you go dreaming of sky lights and kitchen islands take a look at our house extension cost calculator below to determine how much you may expect to pay for the labour costs in england and wales.
More details can be seen in the table below.
Flat roof cost per square metre.
About 15m 2 between 1 2 000 and 16 000 in total.
A screen can be added for an additional cost of 3 000 to 4 000.
The savings are primarily in the cost of building the superstructure especially the foundations walls and roof.
About 24m 2 between 19 000 and 26 000 in total.
You can expect to pay about 1 500 2 000 usd per m2 for a single story extension with variation depending on the four details listed above.
Flat roof extensions cost from 700 lowest possible and can reach up to 3 000.
Meanwhile an estimate for the build cost of a double story extension would be roughly double the single story quote.
However if you want a basic quality extension the cost to build calculates to about 800 m 2 to 1 000 m 2.
Or i f you want a premium quality extension the cost to build calculates to about 1 400 m 2 to 2 000 m 2.
House extension cost calculator are you looking for more space or thinking of buying a house and extending it yourself.
About 48m 2 between 38 000 and 52 000 in total.