Range from the cheapest single storey extension £29200 (R i daniels based in SA14) to the dearest single storey extension £58000 (KD Construction based in SA15).
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 SA17 by posting a job with HaMuch and we will send it to extension builders in SA17.
Job | Estimate |
Underpinning a house | £17025 |
Build a two storey extension | £87288 |
Build a timber frame extension | £25525 |
Install a swimming pool | £80525 |
Cost to build a single storey extension | £40502 |
Cost to build a side return extension | £32158 |
Install an RSJ | £1725 |
Build an outbuilding | £9525 |
Build a mansard loft conversion | £51525 |
Cost of a loft conversion | £29298 |
Build a kitchen extension | £41525 |
Build a hip to gable loft conversion | £41525 |
Build a granny annexe | £86525 |
Build a garden office | £9525 |
Convert a garage | £15525 |
Build a new garage | £18025 |
Build a flat roof extension | £21525 |
Build a dormer loft conversion | £41525 |
Lay a concrete foundation | £5775 |
Convert a bungalow loft | £28525 |
Basement conversion cost | £32158 |