Cheapest builders to convert your basement in S81
Range from the cheapest Basement conversion £28500 (R Watson Builders based in S43) to the dearest Basement conversion £51000 (Green Exteriors Ltd based in S60).
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 S81 by posting a job with HaMuch and we will send it to extension builders in S81.
Estimates for common extension builder jobs in S81;
| Job | Estimate |
| Underpinning a house | £17309 |
| Build a two storey extension | £87713 |
| Build a timber frame extension | £25809 |
| Install a swimming pool | £80809 |
| Cost to build a single storey extension | £46173 |
| Cost to build a side return extension | £35347 |
| Install an RSJ | £2009 |
| Build an outbuilding | £9809 |
| Build a mansard loft conversion | £51809 |
| Cost of a loft conversion | £31956 |
| Build a kitchen extension | £41809 |
| Build a hip to gable loft conversion | £41809 |
| Build a granny annexe | £86809 |
| Build a garden office | £9809 |
| Convert a garage | £15809 |
| Build a flat roof extension | £21809 |
| Build a dormer loft conversion | £41809 |
| Lay a concrete foundation | £6059 |
| Convert a bungalow loft | £28809 |
| Basement conversion cost | £35347 |