Cheapest builders to convert your basement in Welling
Range from the cheapest Basement conversion £26250 (Birdz Property Services based in DA16) to the dearest Basement conversion £37500 (M C Technicians Ltd based in SE9).
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 Welling by posting a job with HaMuch and we will send it to extension builders in Welling.
Estimates for common extension builder jobs in Welling;
| Job | Estimate |
| Underpinning a house | £17329 |
| Build a two storey extension | £87744 |
| Build a timber frame extension | £25829 |
| Install a swimming pool | £80829 |
| Cost to build a single storey extension | £46589 |
| Cost to build a side return extension | £35581 |
| Install an RSJ | £2029 |
| Build an outbuilding | £9829 |
| Build a mansard loft conversion | £51829 |
| Cost of a loft conversion | £32151 |
| Build a kitchen extension | £41829 |
| Build a hip to gable loft conversion | £41829 |
| Build a granny annexe | £86829 |
| Build a garden office | £9829 |
| Convert a garage | £15829 |
| Build a new garage | £18329 |
| Build a flat roof extension | £21829 |
| Build a dormer loft conversion | £41829 |
| Lay a concrete foundation | £6079 |
| Convert a bungalow loft | £28829 |
| Basement conversion cost | £35581 |