Cheapest builders to convert your basement in BN12
Range from the cheapest Basement conversion £33000 (Ecoglaze based in BN15) to the dearest Basement conversion £37500 (K Crumley Construction based in Rh20).
Comparing extension builders estimates for a Basement conversion 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 for the cost to convert a basement in BN12 by posting a job with HaMuch and we will send it to extension builders in BN12.
Estimates for common extension builder jobs in BN12;
| Job | Estimate |
| Underpinning a house | £17244 |
| Build a two storey extension | £87616 |
| Build a timber frame extension | £25744 |
| Install a swimming pool | £80744 |
| Cost to build a single storey extension | £44874 |
| Cost to build a side return extension | £34616 |
| Install an RSJ | £1944 |
| Build an outbuilding | £9744 |
| Build a mansard loft conversion | £51744 |
| Cost of a loft conversion | £31347 |
| Build a kitchen extension | £41744 |
| Build a hip to gable loft conversion | £41744 |
| Build a granny annexe | £86744 |
| Build a garden office | £9744 |
| Convert a garage | £15744 |
| Build a new garage | £18244 |
| Build a flat roof extension | £21744 |
| Build a dormer loft conversion | £41744 |
| Lay a concrete foundation | £5994 |
| Convert a bungalow loft | £28744 |
| Basement conversion cost | £34616 |