Extension builder estimates (based on hourly rates) to build a single storey extension in Sunbury-on-thames
Range from the cheapest single storey extension £34000 (Scott's Gardens based in TW13) to the dearest single storey extension £66000 (AMWEB PROPERTY SERVICES based in TW16).
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 Sunbury-on-thames by posting a job with HaMuch and we will send it to extension builders in Sunbury-on-thames.
Estimates for common extension builder jobs in Sunbury-on-thames;
| Job | Estimate |
| Underpinning a house | £17412 |
| Build a two storey extension | £87868 |
| Build a timber frame extension | £25912 |
| Install a swimming pool | £80912 |
| Cost to build a single storey extension | £48240 |
| Cost to build a side return extension | £36510 |
| Install an RSJ | £2112 |
| Build an outbuilding | £9912 |
| Build a mansard loft conversion | £51912 |
| Cost of a loft conversion | £32925 |
| Build a kitchen extension | £41912 |
| Build a hip to gable loft conversion | £41912 |
| Build a granny annexe | £86912 |
| Build a garden office | £9912 |
| Convert a garage | £15912 |
| Build a new garage | £18412 |
| Build a flat roof extension | £21912 |
| Build a dormer loft conversion | £41912 |
| Lay a concrete foundation | £6162 |
| Convert a bungalow loft | £28912 |
| Basement conversion cost | £36510 |