Cheapest builders to convert your basement in N1c
Range from the cheapest Basement conversion £35790 (Capital Construction ltd based in N1) to the dearest Basement conversion £37500 (Masters Construction UK based in NW1).
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 N1c by posting a job with HaMuch and we will send it to extension builders in N1c.
Estimates for common extension builder jobs in N1c;
| Job | Estimate |
| Underpinning a house | £17430 |
| Build a two storey extension | £87895 |
| Build a timber frame extension | £25930 |
| Install a swimming pool | £80930 |
| Cost to build a single storey extension | £48605 |
| Cost to build a side return extension | £36715 |
| Install an RSJ | £2130 |
| Build an outbuilding | £9930 |
| Build a mansard loft conversion | £51930 |
| Cost of a loft conversion | £33096 |
| Build a kitchen extension | £41930 |
| Build a hip to gable loft conversion | £41930 |
| Build a granny annexe | £86930 |
| Build a garden office | £9930 |
| Convert a garage | £15930 |
| Build a new garage | £18430 |
| Build a flat roof extension | £21930 |
| Build a dormer loft conversion | £41930 |
| Lay a concrete foundation | £6180 |
| Convert a bungalow loft | £28930 |
| Basement conversion cost | £36715 |