Extension builder estimates (based on hourly rates) to build a single storey extension in Southhampton
Range from the cheapest single storey extension £43440 (Dell Developments Ltd based in SO18) to the dearest single storey extension £46320 (KT Carpentry & Building Services based in SO16).
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 Southhampton by posting a job with HaMuch and we will send it to extension builders in Southhampton.
Recent Jobs
17/10/2023
Extension Builder near Southampton
Single storey extension
04/02/2024
Extension Builder near So315bs
Single storey extension, bricks and roof only
Estimates for common extension builder jobs in Southhampton;
| Job | Estimate |
| Underpinning a house | £17228 |
| Build a two storey extension | £87592 |
| Build a timber frame extension | £25728 |
| Install a swimming pool | £80728 |
| Cost to build a single storey extension | £44560 |
| Cost to build a side return extension | £34440 |
| Install an RSJ | £1928 |
| Build an outbuilding | £9728 |
| Build a mansard loft conversion | £51728 |
| Cost of a loft conversion | £31200 |
| Build a kitchen extension | £41728 |
| Build a hip to gable loft conversion | £41728 |
| Build a granny annexe | £86728 |
| Build a garden office | £9728 |
| Convert a garage | £15728 |
| Build a new garage | £18228 |
| Build a flat roof extension | £21728 |
| Build a dormer loft conversion | £41728 |
| Lay a concrete foundation | £5978 |
| Convert a bungalow loft | £28728 |
| Basement conversion cost | £34440 |