Cheapest builders to convert your basement in M40
Range from the cheapest Basement conversion £28500 (D.r.m.brickwork based in OL6) to the dearest Basement conversion £37500 (Goldcrest Finance based in M3).
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 M40 by posting a job with HaMuch and we will send it to extension builders in M40.
Estimates for common extension builder jobs in M40;
| Job | Estimate |
| Underpinning a house | £17109 |
| Build a two storey extension | £87413 |
| Build a timber frame extension | £25609 |
| Install a swimming pool | £80609 |
| Cost to build a single storey extension | £42173 |
| Cost to build a side return extension | £33097 |
| Install an RSJ | £1809 |
| Build an outbuilding | £9609 |
| Build a mansard loft conversion | £51609 |
| Cost of a loft conversion | £30081 |
| Build a kitchen extension | £41609 |
| Build a hip to gable loft conversion | £41609 |
| Build a granny annexe | £86609 |
| Build a garden office | £9609 |
| Convert a garage | £15609 |
| Build a new garage | £18109 |
| Build a flat roof extension | £21609 |
| Build a dormer loft conversion | £41609 |
| Lay a concrete foundation | £5859 |
| Convert a bungalow loft | £28609 |
| Basement conversion cost | £33097 |