Extension builder estimates (based on hourly rates) to build a single storey extension in CM5
Range from the cheapest single storey extension £45200 (ACM Loft Designs ltd based in CM5) to the dearest single storey extension £74000 (Gemini Properties T/A Simon Donovan based in CM5).
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 CM5 by posting a job with HaMuch and we will send it to extension builders in CM5.
Estimates for common extension builder jobs in CM5;
| Job | Estimate |
| Underpinning a house | £17418 |
| Build a two storey extension | £87877 |
| Build a timber frame extension | £25918 |
| Install a swimming pool | £80918 |
| Cost to build a single storey extension | £48362 |
| Cost to build a side return extension | £36578 |
| Install an RSJ | £2118 |
| Build an outbuilding | £9918 |
| Build a mansard loft conversion | £51918 |
| Cost of a loft conversion | £32982 |
| Build a kitchen extension | £41918 |
| Build a hip to gable loft conversion | £41918 |
| Build a granny annexe | £86918 |
| Build a garden office | £9918 |
| Convert a garage | £15918 |
| Build a new garage | £18418 |
| Build a flat roof extension | £21918 |
| Build a dormer loft conversion | £41918 |
| Lay a concrete foundation | £6168 |
| Convert a bungalow loft | £28918 |
| Basement conversion cost | £36578 |