Extension builder estimates (based on hourly rates) to build a single storey extension in N6
Range from the cheapest single storey extension £46800 (N10 Building Contractors Ltd based in N10) to the dearest single storey extension £48880 (Raocon Limited 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 N6 by posting a job with HaMuch and we will send it to extension builders in N6.
Estimates for common extension builder jobs in N6;
| Job | Estimate |
| Underpinning a house | £17401 |
| Build a two storey extension | £87852 |
| Build a timber frame extension | £25901 |
| Install a swimming pool | £80901 |
| Cost to build a single storey extension | £48029 |
| Cost to build a side return extension | £36391 |
| Install an RSJ | £2101 |
| Build an outbuilding | £9901 |
| Build a mansard loft conversion | £51901 |
| Cost of a loft conversion | £32826 |
| Build a kitchen extension | £41901 |
| Build a hip to gable loft conversion | £41901 |
| Build a granny annexe | £86901 |
| Build a garden office | £9901 |
| Convert a garage | £15901 |
| Build a new garage | £18401 |
| Build a flat roof extension | £21901 |
| Build a dormer loft conversion | £41901 |
| Lay a concrete foundation | £6151 |
| Convert a bungalow loft | £28901 |
| Basement conversion cost | £36391 |