Cost of a two storey extension in W11
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 W11?
Costs range from £87760 (Portobello Projects based in W11) to £88000 (OSHEA CONSTRUCTION LIMITED based in W10), 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 W11;
| Job | Estimate |
| Underpinning a house | £17388 |
| Build a two storey extension | £87832 |
| Build a timber frame extension | £25888 |
| Install a swimming pool | £80888 |
| Cost to build a single storey extension | £47760 |
| Cost to build a side return extension | £36240 |
| Install an RSJ | £2088 |
| Build an outbuilding | £9888 |
| Build a mansard loft conversion | £51888 |
| Cost of a loft conversion | £32700 |
| Build a kitchen extension | £41888 |
| Build a hip to gable loft conversion | £41888 |
| Build a granny annexe | £86888 |
| Build a garden office | £9888 |
| Convert a garage | £15888 |
| Build a flat roof extension | £21888 |
| Build a dormer loft conversion | £41888 |
| Lay a concrete foundation | £6138 |
| Convert a bungalow loft | £28888 |
| Basement conversion cost | £36240 |