Extension builder estimates (based on hourly rates) to build a single storey extension in West Dunbartonshire
Range from the cheapest single storey extension £35600 (CR Joiners based in G82) to the dearest single storey extension £51760 (Price It Cost Consultants Ltd based in PA16).
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 West Dunbartonshire by posting a job with HaMuch and we will send it to extension builders in West Dunbartonshire.
Estimates for common extension builder jobs in West Dunbartonshire;
| Job | Estimate |
| Underpinning a house | £17290 |
| Build a two storey extension | £87685 |
| Build a timber frame extension | £25790 |
| Install a swimming pool | £80790 |
| Cost to build a single storey extension | £45802 |
| Cost to build a side return extension | £35138 |
| Install an RSJ | £1990 |
| Build an outbuilding | £9790 |
| Build a mansard loft conversion | £51790 |
| Cost of a loft conversion | £31782 |
| Build a kitchen extension | £41790 |
| Build a hip to gable loft conversion | £41790 |
| Build a granny annexe | £86790 |
| Build a garden office | £9790 |
| Convert a garage | £15790 |
| Build a new garage | £18290 |
| Build a flat roof extension | £21790 |
| Build a dormer loft conversion | £41790 |
| Lay a concrete foundation | £6040 |
| Convert a bungalow loft | £28790 |
| Basement conversion cost | £35138 |