Extension builder estimates (based on hourly rates) to build a single storey extension in IG4
Range from the cheapest single storey extension £31920 (Perfectstart Ltd based in E12) to the dearest single storey extension £48880 (Maconti Design 3000 based in E12).
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 IG4 by posting a job with HaMuch and we will send it to extension builders in IG4.
Estimates for common extension builder jobs in IG4;
| Job | Estimate |
| Underpinning a house | £17310 |
| Build a two storey extension | £87715 |
| Build a timber frame extension | £25810 |
| Install a swimming pool | £80810 |
| Cost to build a single storey extension | £46205 |
| Cost to build a side return extension | £35365 |
| Install an RSJ | £2010 |
| Build an outbuilding | £9810 |
| Build a mansard loft conversion | £51810 |
| Cost of a loft conversion | £31971 |
| Build a kitchen extension | £41810 |
| Build a hip to gable loft conversion | £41810 |
| Build a granny annexe | £86810 |
| Build a garden office | £9810 |
| Convert a garage | £15810 |
| Build a new garage | £18310 |
| Build a flat roof extension | £21810 |
| Build a dormer loft conversion | £41810 |
| Lay a concrete foundation | £6060 |
| Convert a bungalow loft | £28810 |
| Basement conversion cost | £35365 |