Cheapest builders to convert your basement in W11
Range from the cheapest Basement conversion £33000 (Andrew Fullerton Home & Garden based in W11) to the dearest Basement conversion £37500 (OSHEA CONSTRUCTION LIMITED based in W10).
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 W11 by posting a job with HaMuch and we will send it to extension builders in W11.
Estimates for common extension builder jobs in W11;
| Job | Estimate |
| Underpinning a house | £17374 |
| Build a two storey extension | £87811 |
| Build a timber frame extension | £25874 |
| Install a swimming pool | £80874 |
| Cost to build a single storey extension | £47485 |
| Cost to build a side return extension | £36085 |
| Install an RSJ | £2074 |
| Build an outbuilding | £9874 |
| Build a mansard loft conversion | £51874 |
| Cost of a loft conversion | £32571 |
| Build a kitchen extension | £41874 |
| Build a hip to gable loft conversion | £41874 |
| Build a granny annexe | £86874 |
| Build a garden office | £9874 |
| Convert a garage | £15874 |
| Build a flat roof extension | £21874 |
| Build a dormer loft conversion | £41874 |
| Lay a concrete foundation | £6124 |
| Convert a bungalow loft | £28874 |
| Basement conversion cost | £36085 |