Extension costs

There's no doubt that extensions cost a lot of money, but a lot of the time they're well worth the investment. It's always a sensible idea to get two or three quotes before you commit, but here's a general idea of costs to get you started.

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Total project costs
House extensions	Floor size(m)	Flat roof	Pitched roof
Single storey with one window	3x3
	3x5
	4x4
	4x6
Double storey with two windows	3x3
	3x5
	4x4
	4x6

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