Extension builder estimates (based on hourly rates) to build a single storey extension in BN15
Range from the cheapest single storey extension £42000 (Ecoglaze based in BN15) to the dearest single storey extension £50000 (Elite LT Ltd based in BN3).
Comparing extension builders estimates for fitting a downstairs toilet 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 to build a single storey extension in BN15 by posting a job with HaMuch and we will send it to extension builders in BN15.
Estimates for common extension builder jobs in BN15;
| Job | Estimate |
| Underpinning a house | £17256 |
| Build a two storey extension | £87635 |
| Build a timber frame extension | £25756 |
| Install a swimming pool | £80756 |
| Cost to build a single storey extension | £45130 |
| Cost to build a side return extension | £34760 |
| Install an RSJ | £1956 |
| Build an outbuilding | £9756 |
| Build a mansard loft conversion | £51756 |
| Cost of a loft conversion | £31467 |
| Build a kitchen extension | £41756 |
| Build a hip to gable loft conversion | £41756 |
| Build a granny annexe | £86756 |
| Build a garden office | £9756 |
| Convert a garage | £15756 |
| Build a new garage | £18256 |
| Build a flat roof extension | £21756 |
| Build a dormer loft conversion | £41756 |
| Lay a concrete foundation | £6006 |
| Convert a bungalow loft | £28756 |
| Basement conversion cost | £34760 |