Cheapest builders to convert your basement in BT55
Range from the cheapest Basement conversion £29670 (Purdy build based in bt53) to the dearest Basement conversion £31290 (SF Carpentry based in BT51).
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 BT55 by posting a job with HaMuch and we will send it to extension builders in BT55.
Estimates for common extension builder jobs in BT55;
| Job | Estimate |
| Underpinning a house | £16895 |
| Build a two storey extension | £87092 |
| Build a timber frame extension | £25395 |
| Install a swimming pool | £80395 |
| Cost to build a single storey extension | £37893 |
| Cost to build a side return extension | £30690 |
| Install an RSJ | £1595 |
| Build an outbuilding | £9395 |
| Build a mansard loft conversion | £51395 |
| Cost of a loft conversion | £28075 |
| Build a kitchen extension | £41395 |
| Build a hip to gable loft conversion | £41395 |
| Build a granny annexe | £86395 |
| Build a garden office | £9395 |
| Convert a garage | £15395 |
| Build a new garage | £17895 |
| Build a flat roof extension | £21395 |
| Build a dormer loft conversion | £41395 |
| Lay a concrete foundation | £5645 |
| Convert a bungalow loft | £28395 |
| Basement conversion cost | £30690 |
Rates for other BT55 trades
Extension Builders in BT55
| Business name | Basement conversion cost |
|---|---|
| purdy build, Antrim, bt53 | £29670 |
| SF Carpentry, Londonderry, BT51 | £31290 |
| Luxury Garden Studios, Londonderry, BT47 | £31110 |