Extension builder estimates (based on hourly rates) to build a single storey extension in Kent
Range from the cheapest single storey extension £29200 (S MEGSON CONSTRUCTION based in CT5) to the dearest single storey extension £45680 (C L Developments based in ME9).
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 Kent by posting a job with HaMuch and we will send it to extension builders in Kent.
Estimates for common extension builder jobs in Kent;
| Job | Estimate |
| Underpinning a house | £17079 |
| Build a two storey extension | £87369 |
| Build a timber frame extension | £25579 |
| Install a swimming pool | £80579 |
| Cost to build a single storey extension | £41584 |
| Cost to build a side return extension | £32766 |
| Install an RSJ | £1779 |
| Build an outbuilding | £9579 |
| Build a mansard loft conversion | £51579 |
| Cost of a loft conversion | £29805 |
| Build a kitchen extension | £41579 |
| Build a hip to gable loft conversion | £41579 |
| Build a granny annexe | £86579 |
| Build a garden office | £9579 |
| Convert a garage | £15579 |
| Build a new garage | £18079 |
| Build a flat roof extension | £21579 |
| Build a dormer loft conversion | £41579 |
| Lay a concrete foundation | £5829 |
| Convert a bungalow loft | £28579 |
| Basement conversion cost | £32766 |