Extension builder estimates (based on hourly rates) to build a single storey extension in DA15
Range from the cheapest single storey extension £45200 (D D Loft Conversions based in DA5) to the dearest single storey extension £50000 (M C Technicians Ltd based in SE9).
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 DA15 by posting a job with HaMuch and we will send it to extension builders in DA15.
Estimates for common extension builder jobs in DA15;
| Job | Estimate |
| Underpinning a house | £17360 |
| Build a two storey extension | £87790 |
| Build a timber frame extension | £25860 |
| Install a swimming pool | £80860 |
| Cost to build a single storey extension | £47197 |
| Cost to build a side return extension | £35923 |
| Install an RSJ | £2060 |
| Build an outbuilding | £9860 |
| Build a mansard loft conversion | £51860 |
| Cost of a loft conversion | £32436 |
| Build a kitchen extension | £41860 |
| Build a hip to gable loft conversion | £41860 |
| Build a granny annexe | £86860 |
| Build a garden office | £9860 |
| Convert a garage | £15860 |
| Build a new garage | £18360 |
| Build a flat roof extension | £21860 |
| Build a dormer loft conversion | £41860 |
| Lay a concrete foundation | £6110 |
| Convert a bungalow loft | £28860 |
| Basement conversion cost | £35923 |