Cheapest builders to convert your basement in ST15
Range from the cheapest Basement conversion £31200 (P and A Harrison Construction Services based in ST3) to the dearest Basement conversion £33900 (Greenwood Building Services based in ST5).
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 ST15 by posting a job with HaMuch and we will send it to extension builders in ST15.
Estimates for common extension builder jobs in ST15;
| Job | Estimate |
| Underpinning a house | £17077 |
| Build a two storey extension | £87366 |
| Build a timber frame extension | £25577 |
| Install a swimming pool | £80577 |
| Cost to build a single storey extension | £41546 |
| Cost to build a side return extension | £32744 |
| Install an RSJ | £1777 |
| Build an outbuilding | £9577 |
| Build a mansard loft conversion | £51577 |
| Cost of a loft conversion | £29787 |
| Build a kitchen extension | £41577 |
| Build a hip to gable loft conversion | £41577 |
| Build a granny annexe | £86577 |
| Build a garden office | £9577 |
| Convert a garage | £15577 |
| Build a new garage | £18077 |
| Build a flat roof extension | £21577 |
| Build a dormer loft conversion | £41577 |
| Lay a concrete foundation | £5827 |
| Convert a bungalow loft | £28577 |
| Basement conversion cost | £32744 |