Extension builder estimates (based on hourly rates) to build a single storey extension in EC4M
Range from the cheapest single storey extension £46960 (Flow Property Services based in EC4M) to the dearest single storey extension £74000 (Q Lofts and Extensions based in EC1R).
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 EC4M by posting a job with HaMuch and we will send it to extension builders in EC4M.
Estimates for common extension builder jobs in EC4M;
| Job | Estimate |
| Underpinning a house | £17430 |
| Build a two storey extension | £87894 |
| Build a timber frame extension | £25930 |
| Install a swimming pool | £80930 |
| Cost to build a single storey extension | £48592 |
| Cost to build a side return extension | £36708 |
| Install an RSJ | £2130 |
| Build an outbuilding | £9930 |
| Build a mansard loft conversion | £51930 |
| Cost of a loft conversion | £33090 |
| Build a kitchen extension | £41930 |
| Build a hip to gable loft conversion | £41930 |
| Build a granny annexe | £86930 |
| Build a garden office | £9930 |
| Convert a garage | £15930 |
| Build a new garage | £18430 |
| Build a flat roof extension | £21930 |
| Build a dormer loft conversion | £41930 |
| Lay a concrete foundation | £6180 |
| Convert a bungalow loft | £28930 |
| Basement conversion cost | £36708 |