Cost of a two storey extension in Outer London
A two storey extension is a great way to add extra space to your home, adding value to your property. But how much does it cost to build a double storey extension in Outer London?
Costs range from £87400 (Total Home Refurbishments Ltd based in SE13) to £87916 (Island design & Construction Ltd based in E14), but these are just estimates. The best way to compare costs is to get real quotes from real builders.
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Estimates for common extension builder jobs in Outer London;
| Job | Estimate |
| Underpinning a house | £17383 |
| Build a two storey extension | £87825 |
| Build a timber frame extension | £25883 |
| Install a swimming pool | £80883 |
| Cost to build a single storey extension | £47664 |
| Cost to build a side return extension | £36186 |
| Install an RSJ | £2083 |
| Build an outbuilding | £9883 |
| Build a mansard loft conversion | £51883 |
| Cost of a loft conversion | £32655 |
| Build a kitchen extension | £41883 |
| Build a hip to gable loft conversion | £41883 |
| Build a granny annexe | £86883 |
| Build a garden office | £9883 |
| Convert a garage | £15883 |
| Build a new garage | £18383 |
| Build a flat roof extension | £21883 |
| Build a dormer loft conversion | £41883 |
| Lay a concrete foundation | £6133 |
| Convert a bungalow loft | £28883 |
| Basement conversion cost | £36186 |