Extension builder estimates (based on hourly rates) to build a single storey extension in CB11
Range from the cheapest single storey extension £26000 (V S M Property Services Ltd based in CM23) 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 CB11 by posting a job with HaMuch and we will send it to extension builders in CB11.
Estimates for common extension builder jobs in CB11;
| Job | Estimate |
| Underpinning a house | £17385 |
| Build a two storey extension | £87827 |
| Build a timber frame extension | £25885 |
| Install a swimming pool | £80885 |
| Cost to build a single storey extension | £47696 |
| Cost to build a side return extension | £36204 |
| Install an RSJ | £2085 |
| Build an outbuilding | £9885 |
| Build a mansard loft conversion | £51885 |
| Cost of a loft conversion | £32670 |
| Build a kitchen extension | £41885 |
| Build a hip to gable loft conversion | £41885 |
| Build a granny annexe | £86885 |
| Build a garden office | £9885 |
| Convert a garage | £15885 |
| Build a new garage | £18385 |
| Build a flat roof extension | £21885 |
| Build a dormer loft conversion | £41885 |
| Lay a concrete foundation | £6135 |
| Convert a bungalow loft | £28885 |
| Basement conversion cost | £36204 |