Range from the cheapest Basement conversion £28500 (Ghani Constructions based in IG1) to the dearest Basement conversion £60000 (Gardening Life Ltd based in E10).
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 E11 by posting a job with HaMuch and we will send it to extension builders in E11.
31/08/2023
Basement conversion
Job | Estimate |
Underpinning a house | £17448 |
Build a two storey extension | £87923 |
Build a timber frame extension | £25948 |
Install a swimming pool | £80948 |
Cost to build a single storey extension | £48970 |
Cost to build a side return extension | £36920 |
Install an RSJ | £2148 |
Build an outbuilding | £9948 |
Build a mansard loft conversion | £51948 |
Cost of a loft conversion | £33267 |
Build a kitchen extension | £41948 |
Build a hip to gable loft conversion | £41948 |
Build a granny annexe | £86948 |
Build a garden office | £9948 |
Convert a garage | £15948 |
Build a new garage | £18448 |
Build a flat roof extension | £21948 |
Build a dormer loft conversion | £41948 |
Lay a concrete foundation | £6198 |
Convert a bungalow loft | £28948 |
Basement conversion cost | £36920 |