Extension builder estimates (based on hourly rates) to build a single storey extension in CB23
Range from the cheapest single storey extension £45200 (James Burch Roofing based in CB23) to the dearest single storey extension £74000 (ALLIED BUILDING ASSOCIATES LTD based in CB22).
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 CB23 by posting a job with HaMuch and we will send it to extension builders in CB23.
Estimates for common extension builder jobs in CB23;
| Job | Estimate |
| Underpinning a house | £17415 |
| Build a two storey extension | £87873 |
| Build a timber frame extension | £25915 |
| Install a swimming pool | £80915 |
| Cost to build a single storey extension | £48304 |
| Cost to build a side return extension | £36546 |
| Install an RSJ | £2115 |
| Build an outbuilding | £9915 |
| Build a mansard loft conversion | £51915 |
| Cost of a loft conversion | £32955 |
| Build a kitchen extension | £41915 |
| Build a hip to gable loft conversion | £41915 |
| Build a granny annexe | £86915 |
| Build a garden office | £9915 |
| Convert a garage | £15915 |
| Build a new garage | £18415 |
| Build a flat roof extension | £21915 |
| Build a dormer loft conversion | £41915 |
| Lay a concrete foundation | £6165 |
| Convert a bungalow loft | £28915 |
| Basement conversion cost | £36546 |