Cheapest builders to convert your basement in SE7
Range from the cheapest Basement conversion £24900 (Animus Construction Ltd based in E6) to the dearest Basement conversion £37500 (Mr S J Reece based in SE7).
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 SE7 by posting a job with HaMuch and we will send it to extension builders in SE7.
Estimates for common extension builder jobs in SE7;
| Job | Estimate |
| Underpinning a house | £17330 |
| Build a two storey extension | £87745 |
| Build a timber frame extension | £25830 |
| Install a swimming pool | £80830 |
| Cost to build a single storey extension | £46602 |
| Cost to build a side return extension | £35588 |
| Install an RSJ | £2030 |
| Build an outbuilding | £9830 |
| Build a mansard loft conversion | £51830 |
| Cost of a loft conversion | £32157 |
| Build a kitchen extension | £41830 |
| Build a hip to gable loft conversion | £41830 |
| Build a granny annexe | £86830 |
| Build a garden office | £9830 |
| Convert a garage | £15830 |
| Build a new garage | £18330 |
| Build a flat roof extension | £21830 |
| Build a dormer loft conversion | £41830 |
| Lay a concrete foundation | £6080 |
| Convert a bungalow loft | £28830 |
| Basement conversion cost | £35588 |