Extension builder estimates (based on hourly rates) to build a single storey extension in Sevenoaks
Range from the cheapest single storey extension £38000 (CAMERON BUILDING AND LANDSCAPING SERVICES LTD based in rh8) to the dearest single storey extension £50000 (Aby Properties based in TN13).
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 Sevenoaks by posting a job with HaMuch and we will send it to extension builders in Sevenoaks.
Estimates for common extension builder jobs in Sevenoaks;
| Job | Estimate |
| Underpinning a house | £17328 |
| Build a two storey extension | £87743 |
| Build a timber frame extension | £25828 |
| Install a swimming pool | £80828 |
| Cost to build a single storey extension | £46570 |
| Cost to build a side return extension | £35570 |
| Install an RSJ | £2028 |
| Build an outbuilding | £9828 |
| Build a mansard loft conversion | £51828 |
| Cost of a loft conversion | £32142 |
| Build a kitchen extension | £41828 |
| Build a hip to gable loft conversion | £41828 |
| Build a granny annexe | £86828 |
| Build a garden office | £9828 |
| Convert a garage | £15828 |
| Build a new garage | £18328 |
| Build a flat roof extension | £21828 |
| Build a dormer loft conversion | £41828 |
| Lay a concrete foundation | £6078 |
| Convert a bungalow loft | £28828 |
| Basement conversion cost | £35570 |