Extension builder estimates (based on hourly rates) to build a single storey extension in KT15
Range from the cheapest single storey extension £38800 (GJ Roofing based in KT14) to the dearest single storey extension £49200 (JDM (D&B) Ltd based in Kt14).
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 KT15 by posting a job with HaMuch and we will send it to extension builders in KT15.
Estimates for common extension builder jobs in KT15;
| Job | Estimate |
| Underpinning a house | £17376 |
| Build a two storey extension | £87814 |
| Build a timber frame extension | £25876 |
| Install a swimming pool | £80876 |
| Cost to build a single storey extension | £47523 |
| Cost to build a side return extension | £36107 |
| Install an RSJ | £2076 |
| Build an outbuilding | £9876 |
| Build a mansard loft conversion | £51876 |
| Cost of a loft conversion | £32589 |
| Build a kitchen extension | £41876 |
| Build a hip to gable loft conversion | £41876 |
| Build a granny annexe | £86876 |
| Build a garden office | £9876 |
| Convert a garage | £15876 |
| Build a flat roof extension | £21876 |
| Build a dormer loft conversion | £41876 |
| Lay a concrete foundation | £6126 |
| Convert a bungalow loft | £28876 |
| Basement conversion cost | £36107 |