Range from the cheapest Basement conversion £25800 (SUMNER CONSTRUCTION based in EX16) to the dearest Basement conversion £37500 (Karesa Developments Ltd based in TA21).
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 Central London by posting a job with HaMuch and we will send it to extension builders in Central London.
Job | Estimate |
Underpinning a house | £17001 |
Build a two storey extension | £87252 |
Build a timber frame extension | £25501 |
Install a swimming pool | £80501 |
Cost to build a single storey extension | £40022 |
Cost to build a side return extension | £31888 |
Install an RSJ | £1701 |
Build an outbuilding | £9501 |
Build a mansard loft conversion | £51501 |
Cost of a loft conversion | £29073 |
Build a kitchen extension | £41501 |
Build a hip to gable loft conversion | £41501 |
Build a granny annexe | £86501 |
Build a garden office | £9501 |
Convert a garage | £15501 |
Build a new garage | £18001 |
Build a flat roof extension | £21501 |
Build a dormer loft conversion | £41501 |
Lay a concrete foundation | £5751 |
Convert a bungalow loft | £28501 |
Basement conversion cost | £31888 |