Extension builder estimates (based on hourly rates) to build a single storey extension in EC3N
Range from the cheapest single storey extension £26000 (Gogoles based in E1) to the dearest single storey extension £48880 (London Roof Gardens based in EC3V).
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 EC3N by posting a job with HaMuch and we will send it to extension builders in EC3N.
Estimates for common extension builder jobs in EC3N;
| Job | Estimate |
| Underpinning a house | £17313 |
| Build a two storey extension | £87719 |
| Build a timber frame extension | £25813 |
| Install a swimming pool | £80813 |
| Cost to build a single storey extension | £46256 |
| Cost to build a side return extension | £35394 |
| Install an RSJ | £2013 |
| Build an outbuilding | £9813 |
| Build a mansard loft conversion | £51813 |
| Cost of a loft conversion | £31995 |
| Build a kitchen extension | £41813 |
| Build a hip to gable loft conversion | £41813 |
| Build a granny annexe | £86813 |
| Build a garden office | £9813 |
| Convert a garage | £15813 |
| Build a new garage | £18313 |
| Build a flat roof extension | £21813 |
| Build a dormer loft conversion | £41813 |
| Lay a concrete foundation | £6063 |
| Convert a bungalow loft | £28813 |
| Basement conversion cost | £35394 |