Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Need to find an Extension Builder near you for all your extension buildering work?
John Kinloch Construction Ltd provides a local, trusted ...
Need to find an Extension Builder near you for all your extension buildering work?
James Leonnard Builders provides a local, trusted extens...
Trusted and professional extension builder in B46. Experienced in all extension buildering work and keeping within budget and on quote. Castlehall ...
From £21,896
Experienced extension builder ready to quote for your work. DM FLOYD BUILDING is the best extension builder in B46. No obligation free quotes and m...

A flat roof extension ranges from the cheapest of £21,608 (John Kinloch Construction Ltd based in B36) to the dearest of £21,896 (DM FLOYD BUILDING based in B36), but these are just estimates. While they give you an idea of who will be better value, the best way to compare costs is to get real quotes.
Find out how much your flat roof extension will cost in B46 by posting a job with HaMuch. We'll send it to extension builders in B46.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near Sutton Coldfield | £29 | £228 |
| Build A Flat Roof Extension near Solihull | £29 | £231 |
| Build A Flat Roof Extension near Tamworth | £33 | £288 |
| Build A Flat Roof Extension near Nuneaton | £29 | £225 |
| Build A Flat Roof Extension near Birmingham | £29 | £229 |
| Build A Flat Roof Extension near Knowle | £31 | £241 |
| Build A Flat Roof Extension near Bedworth | £28 | £219 |
| Build A Flat Roof Extension near Nuneaton & Bedworth | £28 | £218 |
| Build A Flat Roof Extension near Coventry | £29 | £226 |
| Build A Flat Roof Extension near Smethwick | £29 | £230 |
Whether you’re looking to extend your kitchen with a side return extension or you want to convert your basement into a liveable space, read our cost guides to get an idea of how much each project costs before getting a more accurate quote from our database of reliable tradespeople.

Underpin a building - £17,268

Two storey extension - £87,652

Build a timber frame extension - £25,768

Build a swimming pool - £80,768

Single storey extension - £50,360

Side return extension - £38,890

Install an RSJ - £1,968

Outbuilding - £9,768

Build a Mansard loft conversion - £51,768

Loft conversion - £31,575

Build a kitchen extension - £41,768

Hip to gable loft conversion - £41,768

Granny annexe - £86,768

Garden office - £9,768

Convert a Garage - £15,768

Garage - £18,268

Build a flat roof extension - £21,768

Build a dormer loft conversion - £41,768

Concrete foundations - £6,018

Convert a bungalow loft - £28,768

Convert a basement - £34,890