Cost of a two storey extension in SY18
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 SY18?
Costs range from £86920 (SDW CONSTRUCTION LTD based in SY15) to £87280 (SP Coupland Ltd based in SY25), but these are just estimates. The best way to compare costs is to get real quotes from real builders.
Post your job on HaMuch and we'll send it to extension builders to SY18.
Estimates for common extension builder jobs in SY18;
| Job | Estimate |
| Underpinning a house | £16913 |
| Build a two storey extension | £87119 |
| Build a timber frame extension | £25413 |
| Install a swimming pool | £80413 |
| Cost to build a single storey extension | £38256 |
| Cost to build a side return extension | £30894 |
| Install an RSJ | £1613 |
| Build an outbuilding | £9413 |
| Build a mansard loft conversion | £51413 |
| Cost of a loft conversion | £28245 |
| Build a kitchen extension | £41413 |
| Build a hip to gable loft conversion | £41413 |
| Build a granny annexe | £86413 |
| Build a garden office | £9413 |
| Convert a garage | £15413 |
| Build a new garage | £17913 |
| Build a flat roof extension | £21413 |
| Build a dormer loft conversion | £41413 |
| Lay a concrete foundation | £5663 |
| Convert a bungalow loft | £28413 |
| Basement conversion cost | £30894 |
Rates for other SY18 trades
Extension Builders in SY18
| Business name | Two storey extension cost |
|---|---|
| EVABUILD LIMITED, , SY16 | £87040 |
| SDW CONSTRUCTION LTD, , SY15 | £86920 |
| Cherry Build Limited, Llandrindod Wells, LD1 | £87196 |
| DRAGON CONSTRUCTION T/A, , SY25 | £87160 |
| SP Coupland Ltd, Sir Ceredigion, SY25 | £87280 |