Cheapest builders to convert your basement in Greater Lond
Range from the cheapest Basement conversion £29400 (Our Builders Ltd based in SE6) to the dearest Basement conversion £36780 (Pineapple Interiors based in BR1).
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 Greater Lond by posting a job with HaMuch and we will send it to extension builders in Greater Lond.
Estimates for common extension builder jobs in Greater Lond;
| Job | Estimate |
| Underpinning a house | £17318 |
| Build a two storey extension | £87726 |
| Build a timber frame extension | £25818 |
| Install a swimming pool | £80818 |
| Cost to build a single storey extension | £46352 |
| Cost to build a side return extension | £35448 |
| Install an RSJ | £2018 |
| Build an outbuilding | £9818 |
| Build a mansard loft conversion | £51818 |
| Cost of a loft conversion | £32040 |
| Build a kitchen extension | £41818 |
| Build a hip to gable loft conversion | £41818 |
| Build a granny annexe | £86818 |
| Build a garden office | £9818 |
| Convert a garage | £15818 |
| Build a new garage | £18318 |
| Build a flat roof extension | £21818 |
| Build a dormer loft conversion | £41818 |
| Lay a concrete foundation | £6068 |
| Convert a bungalow loft | £28818 |
| Basement conversion cost | £35448 |