Extension builder estimates (based on hourly rates) to build a single storey extension in E18
Range from the cheapest single storey extension £34000 (Ghani Constructions based in IG1) 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 E18 by posting a job with HaMuch and we will send it to extension builders in E18.
Estimates for common extension builder jobs in E18;
| Job | Estimate |
| Underpinning a house | £17349 |
| Build a two storey extension | £87774 |
| Build a timber frame extension | £25849 |
| Install a swimming pool | £80849 |
| Cost to build a single storey extension | £46986 |
| Cost to build a side return extension | £35804 |
| Install an RSJ | £2049 |
| Build an outbuilding | £9849 |
| Build a mansard loft conversion | £51849 |
| Cost of a loft conversion | £32337 |
| Build a kitchen extension | £41849 |
| Build a hip to gable loft conversion | £41849 |
| Build a granny annexe | £86849 |
| Build a garden office | £9849 |
| Convert a garage | £15849 |
| Build a new garage | £18349 |
| Build a flat roof extension | £21849 |
| Build a dormer loft conversion | £41849 |
| Lay a concrete foundation | £6099 |
| Convert a bungalow loft | £28849 |
| Basement conversion cost | £35804 |