Range from the cheapest single storey extension £30000 (J s building & maintenance services limited based in B26) to the dearest single storey extension £42000 (Fletchers Building & Maintenance, Ltd. based in B11).
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 B9 by posting a job with HaMuch and we will send it to extension builders in B9.
Job | Estimate |
Underpinning a house | £17024 |
Build a two storey extension | £87287 |
Build a timber frame extension | £25524 |
Install a swimming pool | £80524 |
Cost to build a single storey extension | £40490 |
Cost to build a side return extension | £32150 |
Install an RSJ | £1724 |
Build an outbuilding | £9524 |
Build a mansard loft conversion | £51524 |
Cost of a loft conversion | £29292 |
Build a kitchen extension | £41524 |
Build a hip to gable loft conversion | £41524 |
Build a granny annexe | £86524 |
Build a garden office | £9524 |
Convert a garage | £15524 |
Build a new garage | £18024 |
Build a flat roof extension | £21524 |
Build a dormer loft conversion | £41524 |
Lay a concrete foundation | £5774 |
Convert a bungalow loft | £28524 |
Basement conversion cost | £32150 |