Cheapest builders to convert your basement in DL14
Range from the cheapest Basement conversion £24000 (Weathersealed UK based in DL1) to the dearest Basement conversion £37500 (EU Radici Ltd based in DL17).
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 DL14 by posting a job with HaMuch and we will send it to extension builders in DL14.
Estimates for common extension builder jobs in DL14;
| Job | Estimate |
| Underpinning a house | £17100 |
| Build a two storey extension | £87400 |
| Build a timber frame extension | £25600 |
| Install a swimming pool | £80600 |
| Cost to build a single storey extension | £41994 |
| Cost to build a side return extension | £32996 |
| Install an RSJ | £1800 |
| Build an outbuilding | £9600 |
| Build a mansard loft conversion | £51600 |
| Cost of a loft conversion | £29997 |
| Build a kitchen extension | £41600 |
| Build a hip to gable loft conversion | £41600 |
| Build a granny annexe | £86600 |
| Build a garden office | £9600 |
| Convert a garage | £15600 |
| Build a new garage | £18100 |
| Build a flat roof extension | £21600 |
| Build a dormer loft conversion | £41600 |
| Lay a concrete foundation | £5850 |
| Convert a bungalow loft | £28600 |
| Basement conversion cost | £32996 |