Cheapest builders to convert your basement in Balham
Range from the cheapest Basement conversion £35700 (Orchestrate based in SW11) to the dearest Basement conversion £36870 (Barnard Interiors based in SW12).
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 Balham by posting a job with HaMuch and we will send it to extension builders in Balham.
Estimates for common extension builder jobs in Balham;
| Job | Estimate |
| Underpinning a house | £17381 |
| Build a two storey extension | £87821 |
| Build a timber frame extension | £25881 |
| Install a swimming pool | £80881 |
| Cost to build a single storey extension | £47619 |
| Cost to build a side return extension | £36161 |
| Install an RSJ | £2081 |
| Build an outbuilding | £9881 |
| Build a mansard loft conversion | £51881 |
| Cost of a loft conversion | £32634 |
| Build a kitchen extension | £41881 |
| Build a hip to gable loft conversion | £41881 |
| Build a granny annexe | £86881 |
| Build a garden office | £9881 |
| Convert a garage | £15881 |
| Build a new garage | £18381 |
| Build a flat roof extension | £21881 |
| Build a dormer loft conversion | £41881 |
| Lay a concrete foundation | £6131 |
| Convert a bungalow loft | £28881 |
| Basement conversion cost | £36161 |