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.
|Total project costs|
|House extensions||Floor size(m)||Flat roof||Pitched roof|
|Single storey with one window||3x3|
|Double storey with two windows||3x3|
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