Extension builder estimates (based on hourly rates) to build a single storey extension in Brentry
Range from the cheapest single storey extension £42000 (HOMESTAR based in BS7) to the dearest single storey extension £50960 (Clever construction based in BS7).
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 Brentry by posting a job with HaMuch and we will send it to extension builders in Brentry.
Estimates for common extension builder jobs in Brentry;
| Job | Estimate |
| Underpinning a house | £17274 |
| Build a two storey extension | £87662 |
| Build a timber frame extension | £25774 |
| Install a swimming pool | £80774 |
| Cost to build a single storey extension | £45488 |
| Cost to build a side return extension | £34962 |
| Install an RSJ | £1974 |
| Build an outbuilding | £9774 |
| Build a mansard loft conversion | £51774 |
| Cost of a loft conversion | £31635 |
| Build a kitchen extension | £41774 |
| Build a hip to gable loft conversion | £41774 |
| Build a granny annexe | £86774 |
| Build a garden office | £9774 |
| Convert a garage | £15774 |
| Build a new garage | £18274 |
| Build a flat roof extension | £21774 |
| Build a dormer loft conversion | £41774 |
| Lay a concrete foundation | £6024 |
| Convert a bungalow loft | £28774 |
| Basement conversion cost | £34962 |