Cheapest builders to convert your basement in Caerphilly
Range from the cheapest Basement conversion £21120 (Leon Morgan based in NP12) to the dearest Basement conversion £42000 (Parker Construction based in CF14).
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 Caerphilly by posting a job with HaMuch and we will send it to extension builders in Caerphilly.
Estimates for common extension builder jobs in Caerphilly;
| Job | Estimate |
| Underpinning a house | £16950 |
| Build a two storey extension | £87174 |
| Build a timber frame extension | £25450 |
| Install a swimming pool | £80450 |
| Cost to build a single storey extension | £38992 |
| Cost to build a side return extension | £31308 |
| Install an RSJ | £1650 |
| Build an outbuilding | £9450 |
| Build a mansard loft conversion | £51450 |
| Cost of a loft conversion | £28590 |
| Build a kitchen extension | £41450 |
| Build a hip to gable loft conversion | £41450 |
| Build a granny annexe | £86450 |
| Build a garden office | £9450 |
| Convert a garage | £15450 |
| Build a flat roof extension | £21450 |
| Build a dormer loft conversion | £41450 |
| Lay a concrete foundation | £5700 |
| Convert a bungalow loft | £28450 |
| Basement conversion cost | £31308 |