Cheapest builders to convert your basement in Derry
Range from the cheapest Basement conversion £27060 (Extended living by Gilbert-Ash based in BT12) to the dearest Basement conversion £28050 (PC Building based in BT67).
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 Derry by posting a job with HaMuch and we will send it to extension builders in Derry.
Estimates for common extension builder jobs in Derry;
| Job | Estimate |
| Underpinning a house | £16599 |
| Build a two storey extension | £86648 |
| Build a timber frame extension | £25099 |
| Install a swimming pool | £80099 |
| Cost to build a single storey extension | £31971 |
| Cost to build a side return extension | £27359 |
| Install an RSJ | £1299 |
| Build an outbuilding | £9099 |
| Build a mansard loft conversion | £51099 |
| Cost of a loft conversion | £25299 |
| Build a kitchen extension | £41099 |
| Build a hip to gable loft conversion | £41099 |
| Build a granny annexe | £86099 |
| Build a garden office | £9099 |
| Convert a garage | £15099 |
| Build a new garage | £17599 |
| Build a flat roof extension | £21099 |
| Build a dormer loft conversion | £41099 |
| Lay a concrete foundation | £5349 |
| Convert a bungalow loft | £28099 |
| Basement conversion cost | £27359 |