Extension builder estimates (based on hourly rates) to build a single storey extension in Daventry
Range from the cheapest single storey extension £34000 (SKP Roofing & Paving based in Ox17) to the dearest single storey extension £50000 (AJ DESIGN & BUILD LTD based in NN12).
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 Daventry by posting a job with HaMuch and we will send it to extension builders in Daventry.
Estimates for common extension builder jobs in Daventry;
| Job | Estimate |
| Underpinning a house | £17085 |
| Build a two storey extension | £87378 |
| Build a timber frame extension | £25585 |
| Install a swimming pool | £80585 |
| Cost to build a single storey extension | £41706 |
| Cost to build a side return extension | £32834 |
| Install an RSJ | £1785 |
| Build an outbuilding | £9585 |
| Build a mansard loft conversion | £51585 |
| Cost of a loft conversion | £29862 |
| Build a kitchen extension | £41585 |
| Build a hip to gable loft conversion | £41585 |
| Build a granny annexe | £86585 |
| Build a garden office | £9585 |
| Convert a garage | £15585 |
| Build a new garage | £18085 |
| Build a flat roof extension | £21585 |
| Build a dormer loft conversion | £41585 |
| Lay a concrete foundation | £5835 |
| Convert a bungalow loft | £28585 |
| Basement conversion cost | £32834 |