From £21,752
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £21,968
phoenix builders is a trusted extension builder serving customers in M11 and the surrounding area. Contact us to today to get a competitive quote f...
From £22,072
Avon Piping Limited are here to help customers who need an Extension Builder in M11. We offer a competitive rate to complete all your extension bui...
From £21,656
H TIMMINS BUILDING & MAINT is an established extension buildering business in M11. We come highly recommended and provide competitive quotes for yo...
From £21,832
Need to find an Extension Builder near you for all your extension buildering work?
Oscar Renn provides a local, trusted extension builderin...
From £21,768
Trusted and professional extension builder in M11. Experienced in all extension buildering work and keeping within budget and on quote. B R M S hav...
From £21,856
Cornerstone Building Maintenance & Restoration Ltd is an established and experienced local extension builder in M11. Please contact us for a free, ...
From £21,800
Our building services company Silkrise Construction have ten years’ experience and have been helping customers in Manchester and the surrounding ...
From £21,608
Experienced extension builder ready to quote for your work. MyDestigo is the best extension builder in M11. No obligation free quotes and many happ...
From £21,736
Need to find an Extension Builder near you for all your extension buildering work?
J K S Builder provides a local, trusted extension builde...

A flat roof extension ranges from the cheapest of £21,608 (MyDestigo based in M1) to the dearest of £22,072 (Avon Piping Limited based in M12), 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 M11 by posting a job with HaMuch. We'll send it to extension builders in M11.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near Droylsden | £34 | £237 |
| Build A Flat Roof Extension near Failsworth | £35 | £236 |
| Build A Flat Roof Extension near Manchester | £32 | £236 |
| Build A Flat Roof Extension near Reddish | £34 | £236 |
| Build A Flat Roof Extension near Denton | £35 | £234 |
| Build A Flat Roof Extension near Old Trafford | £32 | £236 |
| Build A Flat Roof Extension near Ashton-under-Lyne | £36 | £232 |
| Build A Flat Roof Extension near Dukinfield | £35 | £232 |
| Build A Flat Roof Extension near Tameside | £35 | £232 |
| Build A Flat Roof Extension near Salford | £32 | £238 |
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 - £17,305

Two storey extension - £87,707

Build a timber frame extension - £25,805

Build a swimming pool - £80,805

Single storey extension - £51,096

Side return extension - £39,304

Install an RSJ - £2,005

Outbuilding - £9,805

Build a Mansard loft conversion - £51,805

Loft conversion - £31,920

Build a kitchen extension - £41,805

Hip to gable loft conversion - £41,805

Granny annexe - £86,805

Garden office - £9,805

Convert a Garage - £15,805

Garage - £18,305

Build a flat roof extension - £21,805

Build a dormer loft conversion - £41,805

Concrete foundations - £6,055

Convert a bungalow loft - £28,805

Convert a basement - £35,304