Extension builder estimates (based on hourly rates) to build a single storey extension in TW11
Range from the cheapest single storey extension £42000 (Garage Doors And More based in TW2) to the dearest single storey extension £49040 (Planning Design Building based in TW2).
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 TW11 by posting a job with HaMuch and we will send it to extension builders in TW11.
Estimates for common extension builder jobs in TW11;
| Job | Estimate |
| Underpinning a house | £17372 |
| Build a two storey extension | £87808 |
| Build a timber frame extension | £25872 |
| Install a swimming pool | £80872 |
| Cost to build a single storey extension | £47434 |
| Cost to build a side return extension | £36056 |
| Install an RSJ | £2072 |
| Build an outbuilding | £9872 |
| Build a mansard loft conversion | £51872 |
| Cost of a loft conversion | £32547 |
| Build a kitchen extension | £41872 |
| Build a hip to gable loft conversion | £41872 |
| Build a granny annexe | £86872 |
| Build a garden office | £9872 |
| Convert a garage | £15872 |
| Build a new garage | £18372 |
| Build a flat roof extension | £21872 |
| Build a dormer loft conversion | £41872 |
| Lay a concrete foundation | £6122 |
| Convert a bungalow loft | £28872 |
| Basement conversion cost | £36056 |