Cheapest builders to build a side return extension in Mayfair
Range from the cheapest Side return extension £35700 (Pillar Contractors Ltd based in W1K) to the dearest Side return extension £42000 (A1&PM based in W1H).
Comparing extension builders estimates for Side return extension 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 for a side return extention by posting your job to extension builders in Mayfair.
Estimates for common extension builder jobs in Mayfair;
| Job | Estimate |
| Underpinning a house | £17423 |
| Build a two storey extension | £87884 |
| Build a timber frame extension | £25923 |
| Install a swimming pool | £80923 |
| Cost to build a single storey extension | £48458 |
| Cost to build a side return extension | £36632 |
| Install an RSJ | £2123 |
| Build an outbuilding | £9923 |
| Build a mansard loft conversion | £51923 |
| Cost of a loft conversion | £33027 |
| Build a kitchen extension | £41923 |
| Build a hip to gable loft conversion | £41923 |
| Build a granny annexe | £86923 |
| Build a garden office | £9923 |
| Convert a garage | £15923 |
| Build a new garage | £18423 |
| Build a flat roof extension | £21923 |
| Build a dormer loft conversion | £41923 |
| Lay a concrete foundation | £6173 |
| Convert a bungalow loft | £28923 |
| Basement conversion cost | £36632 |