Extension builder estimates (based on hourly rates) to build a single storey extension in BT57
Range from the cheapest single storey extension £36080 (Purdy build based in bt53) to the dearest single storey extension £38960 (SF Carpentry based in BT51).
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 BT57 by posting a job with HaMuch and we will send it to extension builders in BT57.
Estimates for common extension builder jobs in BT57;
| Job | Estimate |
| Underpinning a house | £16876 |
| Build a two storey extension | £87064 |
| Build a timber frame extension | £25376 |
| Install a swimming pool | £80376 |
| Cost to build a single storey extension | £37520 |
| Cost to build a side return extension | £30480 |
| Install an RSJ | £1576 |
| Build an outbuilding | £9376 |
| Build a mansard loft conversion | £51376 |
| Cost of a loft conversion | £27900 |
| Build a kitchen extension | £41376 |
| Build a hip to gable loft conversion | £41376 |
| Build a granny annexe | £86376 |
| Build a garden office | £9376 |
| Convert a garage | £15376 |
| Build a new garage | £17876 |
| Build a flat roof extension | £21376 |
| Build a dormer loft conversion | £41376 |
| Lay a concrete foundation | £5626 |
| Convert a bungalow loft | £28376 |
| Basement conversion cost | £30480 |
Rates for other BT57 trades
Extension Builders in BT57
| Business name | Single storey extension cost |
|---|---|
| purdy build, Antrim, bt53 | £36080 |
| SF Carpentry, Londonderry, BT51 | £38960 |