From £21,856
Eric Keymer
I have 20 years experience in covering all aspects of the Biulding trade.
From £21,744
Experienced extension builder ready to quote for your work. Brayfield Construction is the best extension builder in IP33. No obligation free quotes...

A flat roof extension ranges from the cheapest of £21,744 (Brayfield Construction based in IP33) to the dearest of £21,856 (Eric keymer based in IP32), 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 IP33 by posting a job with HaMuch. We'll send it to extension builders in IP33.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near Bury St Edmunds | £34 | £251 |
| Build A Flat Roof Extension near Thetford | £42 | £277 |
| Build A Flat Roof Extension near Sudbury | £34 | £229 |
| Build A Flat Roof Extension near Stowmarket | £30 | £221 |
| Build A Flat Roof Extension near Haverhill | £37 | £260 |
| Build A Flat Roof Extension near Ely | £40 | £279 |
| Build A Flat Roof Extension near Ipswich | £33 | £235 |
| Build A Flat Roof Extension near Breckland | £28 | £248 |
| Build A Flat Roof Extension near Cambridge | £38 | £271 |
| Build A Flat Roof Extension near Colchester | £34 | £232 |
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 - £17,300

Two storey extension - £87,700

Build a timber frame extension - £25,800

Build a swimming pool - £80,800

Single storey extension - £51,000

Side return extension - £39,250

Install an RSJ - £2,000

Outbuilding - £9,800

Build a Mansard loft conversion - £51,800

Loft conversion - £31,875

Build a kitchen extension - £41,800

Hip to gable loft conversion - £41,800

Granny annexe - £86,800

Garden office - £9,800

Convert a Garage - £15,800

Garage - £18,300

Build a flat roof extension - £21,800

Build a dormer loft conversion - £41,800

Concrete foundations - £6,050

Convert a bungalow loft - £28,800

Convert a basement - £35,250