Cheapest builders to convert your basement in BS25
Range from the cheapest Basement conversion £25800 (P K BUILDING based in TA8) to the dearest Basement conversion £40200 (WMP Builders based in TA9).
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 BS25 by posting a job with HaMuch and we will send it to extension builders in BS25.
Estimates for common extension builder jobs in BS25;
| Job | Estimate |
| Underpinning a house | £17221 |
| Build a two storey extension | £87581 |
| Build a timber frame extension | £25721 |
| Install a swimming pool | £80721 |
| Cost to build a single storey extension | £44413 |
| Cost to build a side return extension | £34357 |
| Install an RSJ | £1921 |
| Build an outbuilding | £9721 |
| Build a mansard loft conversion | £51721 |
| Cost of a loft conversion | £31131 |
| Build a kitchen extension | £41721 |
| Build a hip to gable loft conversion | £41721 |
| Build a granny annexe | £86721 |
| Build a garden office | £9721 |
| Convert a garage | £15721 |
| Build a new garage | £18221 |
| Build a flat roof extension | £21721 |
| Build a dormer loft conversion | £41721 |
| Lay a concrete foundation | £5971 |
| Convert a bungalow loft | £28721 |
| Basement conversion cost | £34357 |