Cheapest builders to convert your basement in HP4
Range from the cheapest Basement conversion £15900 (Hertfordshire brickwork based in Hp1) to the dearest Basement conversion £42000 (Absolute kitchen and bathroom based in HP3).
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 HP4 by posting a job with HaMuch and we will send it to extension builders in HP4.
Estimates for common extension builder jobs in HP4;
| Job | Estimate |
| Underpinning a house | £17341 |
| Build a two storey extension | £87761 |
| Build a timber frame extension | £25841 |
| Install a swimming pool | £80841 |
| Cost to build a single storey extension | £46819 |
| Cost to build a side return extension | £35711 |
| Install an RSJ | £2041 |
| Build an outbuilding | £9841 |
| Build a mansard loft conversion | £51841 |
| Cost of a loft conversion | £32259 |
| Build a kitchen extension | £41841 |
| Build a hip to gable loft conversion | £41841 |
| Build a granny annexe | £86841 |
| Build a garden office | £9841 |
| Convert a garage | £15841 |
| Build a new garage | £18341 |
| Build a flat roof extension | £21841 |
| Build a dormer loft conversion | £41841 |
| Lay a concrete foundation | £6091 |
| Convert a bungalow loft | £28841 |
| Basement conversion cost | £35711 |