Range from the cheapest Basement conversion £31200 (Apollo Loft Extensions Ltd based in N12) to the dearest Basement conversion £46500 (Greenbuild maintenance sevices ltd based in NW4).
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 N3 by posting a job with HaMuch and we will send it to extension builders in N3.
Job | Estimate |
Underpinning a house | £17431 |
Build a two storey extension | £87896 |
Build a timber frame extension | £25931 |
Install a swimming pool | £80931 |
Cost to build a single storey extension | £48618 |
Cost to build a side return extension | £36722 |
Install an RSJ | £2131 |
Build an outbuilding | £9931 |
Build a mansard loft conversion | £51931 |
Cost of a loft conversion | £33102 |
Build a kitchen extension | £41931 |
Build a hip to gable loft conversion | £41931 |
Build a granny annexe | £86931 |
Build a garden office | £9931 |
Convert a garage | £15931 |
Build a new garage | £18431 |
Build a flat roof extension | £21931 |
Build a dormer loft conversion | £41931 |
Lay a concrete foundation | £6181 |
Convert a bungalow loft | £28931 |
Basement conversion cost | £36722 |