Range from the cheapest Basement conversion £35700 (UCDB Ltd based in E8) to the dearest Basement conversion £38400 (Bspec Ltd based in E5).
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 Hackney by posting a job with HaMuch and we will send it to extension builders in Hackney.
30/08/2023
Side return extension
Job | Estimate |
Underpinning a house | £17407 |
Build a two storey extension | £87860 |
Build a timber frame extension | £25907 |
Install a swimming pool | £80907 |
Cost to build a single storey extension | £48131 |
Cost to build a side return extension | £36449 |
Install an RSJ | £2107 |
Build an outbuilding | £9907 |
Build a mansard loft conversion | £51907 |
Cost of a loft conversion | £32874 |
Build a kitchen extension | £41907 |
Build a hip to gable loft conversion | £41907 |
Build a granny annexe | £86907 |
Build a garden office | £9907 |
Convert a garage | £15907 |
Build a new garage | £18407 |
Build a flat roof extension | £21907 |
Build a dormer loft conversion | £41907 |
Lay a concrete foundation | £6157 |
Convert a bungalow loft | £28907 |
Basement conversion cost | £36449 |