"chris French" wrote in message
news:

snip


All I'm looking for is enough of a figure to be able to cost it into
the
house buying budget, any suggestions, or even just some rough costs of
extensions people have had built?
--
Chris French, Leeds

£1000/m^2 is what I've been told in numerous places, by numerous people.

Is that per m sq ground plan area, or internal floor area including
upstairs & downstairs?