Range from the cheapest single storey extension £42000 (CS Construction & Conversions based in S65) to the dearest single storey extension £170000 (C S Roofing & Building based in S8).
Comparing extension builders estimates for fitting a downstairs toilet gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
What to do - Get rates and quotes to build a single storey extension in S9 by posting a job with HaMuch and we will send it to extension builders in S9.
Job | Estimate |
Underpinning a house | £17632 |
Build a two storey extension | £88197 |
Build a timber frame extension | £26132 |
Install a swimming pool | £81132 |
Cost to build a single storey extension | £52630 |
Cost to build a side return extension | £38980 |
Install an RSJ | £2332 |
Build an outbuilding | £10132 |
Build a mansard loft conversion | £52132 |
Cost of a loft conversion | £34983 |
Build a kitchen extension | £42132 |
Build a hip to gable loft conversion | £42132 |
Build a granny annexe | £87132 |
Build a garden office | £10132 |
Convert a garage | £16132 |
Build a new garage | £18632 |
Build a flat roof extension | £22132 |
Build a dormer loft conversion | £42132 |
Lay a concrete foundation | £6382 |
Convert a bungalow loft | £29132 |
Basement conversion cost | £38980 |