Range from the cheapest Basement conversion £30030 (Building, Construction & Maintenance based in TR16) to the dearest Basement conversion £33090 (MYSA based in TR7).
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 St Agnes by posting a job with HaMuch and we will send it to extension builders in St Agnes.
Job | Estimate |
Underpinning a house | £16964 |
Build a two storey extension | £87196 |
Build a timber frame extension | £25464 |
Install a swimming pool | £80464 |
Cost to build a single storey extension | £39286 |
Cost to build a side return extension | £31474 |
Install an RSJ | £1664 |
Build an outbuilding | £9464 |
Build a mansard loft conversion | £51464 |
Cost of a loft conversion | £28728 |
Build a kitchen extension | £41464 |
Build a hip to gable loft conversion | £41464 |
Build a granny annexe | £86464 |
Build a garden office | £9464 |
Convert a garage | £15464 |
Build a new garage | £17964 |
Build a flat roof extension | £21464 |
Build a dormer loft conversion | £41464 |
Lay a concrete foundation | £5714 |
Convert a bungalow loft | £28464 |
Basement conversion cost | £31474 |