Range from the cheapest Basement conversion £33000 (Early Druid Ltd based in KT3) to the dearest Basement conversion £36870 (Eagle Eye Building based in KT3).
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 New Malden by posting a job with HaMuch and we will send it to extension builders in New Malden.
Job | Estimate |
Underpinning a house | £17367 |
Build a two storey extension | £87800 |
Build a timber frame extension | £25867 |
Install a swimming pool | £80867 |
Cost to build a single storey extension | £47331 |
Cost to build a side return extension | £35999 |
Install an RSJ | £2067 |
Build an outbuilding | £9867 |
Build a mansard loft conversion | £51867 |
Cost of a loft conversion | £32499 |
Build a kitchen extension | £41867 |
Build a hip to gable loft conversion | £41867 |
Build a granny annexe | £86867 |
Build a garden office | £9867 |
Convert a garage | £15867 |
Build a new garage | £18367 |
Build a flat roof extension | £21867 |
Build a dormer loft conversion | £41867 |
Lay a concrete foundation | £6117 |
Convert a bungalow loft | £28867 |
Basement conversion cost | £35999 |