Range from the cheapest single storey extension £29200 (Aquatec Builder based in OL10) to the dearest single storey extension £43120 (AJD Developments based in M24).
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 OL9 by posting a job with HaMuch and we will send it to extension builders in OL9.
17/02/2024
Single storey extension
Job | Estimate |
Underpinning a house | £17049 |
Build a two storey extension | £87324 |
Build a timber frame extension | £25549 |
Install a swimming pool | £80549 |
Cost to build a single storey extension | £40989 |
Cost to build a side return extension | £32431 |
Install an RSJ | £1749 |
Build an outbuilding | £9549 |
Build a mansard loft conversion | £51549 |
Cost of a loft conversion | £29526 |
Build a kitchen extension | £41549 |
Build a hip to gable loft conversion | £41549 |
Build a granny annexe | £86549 |
Build a garden office | £9549 |
Convert a garage | £15549 |
Build a new garage | £18049 |
Build a flat roof extension | £21549 |
Build a dormer loft conversion | £41549 |
Lay a concrete foundation | £5799 |
Convert a bungalow loft | £28549 |
Basement conversion cost | £32431 |