Extension builder estimates (based on hourly rates) to build a single storey extension in N19
Range from the cheapest single storey extension £34000 (Niki based in N4) to the dearest single storey extension £48880 (WeTradeWorks based in N19).
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 N19 by posting a job with HaMuch and we will send it to extension builders in N19.
Estimates for common extension builder jobs in N19;
| Job | Estimate |
| Underpinning a house | £17366 |
| Build a two storey extension | £87798 |
| Build a timber frame extension | £25866 |
| Install a swimming pool | £80866 |
| Cost to build a single storey extension | £47312 |
| Cost to build a side return extension | £35988 |
| Install an RSJ | £2066 |
| Build an outbuilding | £9866 |
| Build a mansard loft conversion | £51866 |
| Cost of a loft conversion | £32490 |
| Build a kitchen extension | £41866 |
| Build a hip to gable loft conversion | £41866 |
| Build a granny annexe | £86866 |
| Build a garden office | £9866 |
| Convert a garage | £15866 |
| Build a new garage | £18366 |
| Build a flat roof extension | £21866 |
| Build a dormer loft conversion | £41866 |
| Lay a concrete foundation | £6116 |
| Convert a bungalow loft | £28866 |
| Basement conversion cost | £35988 |