Cheapest builders to convert your basement in Westminster
Range from the cheapest Basement conversion £35700 (Pillar Contractors Ltd based in W1K) to the dearest Basement conversion £36870 (Guildon LTD based in w1b).
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 Westminster by posting a job with HaMuch and we will send it to extension builders in Westminster.
Recent Jobs
16/10/2023
Extension Builder near N6 5BZ
Basement conversion
30/08/2023
Extension Builder near E35ra
Side return extension
Estimates for common extension builder jobs in Westminster;
| Job | Estimate |
| Underpinning a house | £17406 |
| Build a two storey extension | £87859 |
| Build a timber frame extension | £25906 |
| Install a swimming pool | £80906 |
| Cost to build a single storey extension | £48125 |
| Cost to build a side return extension | £36445 |
| Install an RSJ | £2106 |
| Build an outbuilding | £9906 |
| Build a mansard loft conversion | £51906 |
| Cost of a loft conversion | £32871 |
| Build a kitchen extension | £41906 |
| Build a hip to gable loft conversion | £41906 |
| Build a granny annexe | £86906 |
| Build a garden office | £9906 |
| Convert a garage | £15906 |
| Build a new garage | £18406 |
| Build a flat roof extension | £21906 |
| Build a dormer loft conversion | £41906 |
| Lay a concrete foundation | £6156 |
| Convert a bungalow loft | £28906 |
| Basement conversion cost | £36445 |