Cheapest builders to convert your basement in OL3
Range from the cheapest Basement conversion £25800 (MKS Builders Ltd based in OL11) to the dearest Basement conversion £33630 (Nova Construction based in SK15).
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 OL3 by posting a job with HaMuch and we will send it to extension builders in OL3.
Estimates for common extension builder jobs in OL3;
| Job | Estimate |
| Underpinning a house | £17023 |
| Build a two storey extension | £87285 |
| Build a timber frame extension | £25523 |
| Install a swimming pool | £80523 |
| Cost to build a single storey extension | £40464 |
| Cost to build a side return extension | £32136 |
| Install an RSJ | £1723 |
| Build an outbuilding | £9523 |
| Build a mansard loft conversion | £51523 |
| Cost of a loft conversion | £29280 |
| Build a kitchen extension | £41523 |
| Build a hip to gable loft conversion | £41523 |
| Build a granny annexe | £86523 |
| Build a garden office | £9523 |
| Convert a garage | £15523 |
| Build a new garage | £18023 |
| Build a flat roof extension | £21523 |
| Build a dormer loft conversion | £41523 |
| Lay a concrete foundation | £5773 |
| Convert a bungalow loft | £28523 |
| Basement conversion cost | £32136 |