Cheapest builders to convert your basement in SP8
Range from the cheapest Basement conversion £30750 (Mr based in TA11) to the dearest Basement conversion £42000 (Neil Massey Roofing Contractor based in BA21).
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 SP8 by posting a job with HaMuch and we will send it to extension builders in SP8.
Estimates for common extension builder jobs in SP8;
| Job | Estimate |
| Underpinning a house | £17326 |
| Build a two storey extension | £87738 |
| Build a timber frame extension | £25826 |
| Install a swimming pool | £80826 |
| Cost to build a single storey extension | £46512 |
| Cost to build a side return extension | £35538 |
| Install an RSJ | £2026 |
| Build an outbuilding | £9826 |
| Build a mansard loft conversion | £51826 |
| Cost of a loft conversion | £32115 |
| Build a kitchen extension | £41826 |
| Build a hip to gable loft conversion | £41826 |
| Build a granny annexe | £86826 |
| Build a garden office | £9826 |
| Convert a garage | £15826 |
| Build a new garage | £18326 |
| Build a flat roof extension | £21826 |
| Build a dormer loft conversion | £41826 |
| Lay a concrete foundation | £6076 |
| Convert a bungalow loft | £28826 |
| Basement conversion cost | £35538 |