Extension builder estimates (based on hourly rates) to build a single storey extension in E4
Range from the cheapest single storey extension £46320 (JPL Building and Landscaping based in IG9) to the dearest single storey extension £54000 (DENDALE CONSTRUCTION LTD based in E4).
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 E4 by posting a job with HaMuch and we will send it to extension builders in E4.
Estimates for common extension builder jobs in E4;
| Job | Estimate |
| Underpinning a house | £17392 |
| Build a two storey extension | £87837 |
| Build a timber frame extension | £25892 |
| Install a swimming pool | £80892 |
| Cost to build a single storey extension | £47830 |
| Cost to build a side return extension | £36280 |
| Install an RSJ | £2092 |
| Build an outbuilding | £9892 |
| Build a mansard loft conversion | £51892 |
| Cost of a loft conversion | £32733 |
| Build a kitchen extension | £41892 |
| Build a hip to gable loft conversion | £41892 |
| Build a granny annexe | £86892 |
| Build a garden office | £9892 |
| Convert a garage | £15892 |
| Build a new garage | £18392 |
| Build a flat roof extension | £21892 |
| Build a dormer loft conversion | £41892 |
| Lay a concrete foundation | £6142 |
| Convert a bungalow loft | £28892 |
| Basement conversion cost | £36280 |