Extension builder estimates (based on hourly rates) to build a single storey extension in EN9
Range from the cheapest single storey extension £42000 (Philpot Construction based in EN9) to the dearest single storey extension £50000 (RBM Building based in en9).
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 EN9 by posting a job with HaMuch and we will send it to extension builders in EN9.
Estimates for common extension builder jobs in EN9;
| Job | Estimate |
| Underpinning a house | £17367 |
| Build a two storey extension | £87800 |
| Build a timber frame extension | £25867 |
| Install a swimming pool | £80867 |
| Cost to build a single storey extension | £47338 |
| Cost to build a side return extension | £36002 |
| Install an RSJ | £2067 |
| Build an outbuilding | £9867 |
| Build a mansard loft conversion | £51867 |
| Cost of a loft conversion | £32502 |
| Build a kitchen extension | £41867 |
| Build a hip to gable loft conversion | £41867 |
| Build a granny annexe | £86867 |
| Build a garden office | £9867 |
| Convert a garage | £15867 |
| Build a new garage | £18367 |
| Build a flat roof extension | £21867 |
| Build a dormer loft conversion | £41867 |
| Lay a concrete foundation | £6117 |
| Convert a bungalow loft | £28867 |
| Basement conversion cost | £36002 |