From £87,080
Guardian Structural Ltd (Wall Removal Specialists) was created with one goal in mind.... To set the standards. We take pride in being highest rated...
From £86,616
Need to find an Extension Builder near you for all your extension buildering work?
BRICKSTONE CONSTRUCTION LTD provides a local, trusted ex...
From £86,976
bespoke designers for your new media centre. At last, we’re bringing our stunning conversion knowledge to entertainment installations across the ...
From £86,960
Mode Projects Ltd is an established and experienced local extension builder in M15. Please contact us for a free, no obligation quote and competiti...
From £86,896
Trusted and professional extension builder in M15. Experienced in all extension buildering work and keeping within budget and on quote. SK Building...
From £87,072
Avon Piping Limited are here to help customers who need an Extension Builder in M15. We offer a competitive rate to complete all your extension bui...
From £86,800
Our building services company Silkrise Construction have ten years’ experience and have been helping customers in Manchester and the surrounding ...
From £86,608
Experienced extension builder ready to quote for your work. MyDestigo is the best extension builder in M15. No obligation free quotes and many happ...
From £86,768
Trusted and professional extension builder in M15. Experienced in all extension buildering work and keeping within budget and on quote. B R M S hav...
From £86,832
Need to find an Extension Builder near you for all your extension buildering work?
Oscar Renn provides a local, trusted extension builderin...

Building a granny annexe ranges from £86,608 (MyDestigo based in M1) to £87,080 (Guardian Structural Ltd (Wall Removal Specialists) based in M3), but these are just estimates that can help give you an idea of who will be better value in your area.
The best thing to do is to get quotes to build a granny annexe in M15 by posting a job with HaMuch. We will send it to extension builders in M15 who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Old Trafford | £27 | £203 |
| Granny Annexe near Manchester | £27 | £204 |
| Granny Annexe near Salford | £28 | £203 |
| Granny Annexe near Stretford | £27 | £203 |
| Granny Annexe near Reddish | £29 | £202 |
| Granny Annexe near Sale | £28 | £203 |
| Granny Annexe near Droylsden | £30 | £203 |
| Granny Annexe near Prestwich | £27 | £204 |
| Granny Annexe near Eccles | £27 | £203 |
| Granny Annexe near Urmston | £27 | £201 |
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 - £17,361

Two storey extension - £87,791

Build a timber frame extension - £25,861

Build a swimming pool - £80,861

Single storey extension - £52,216

Side return extension - £39,934

Install an RSJ - £2,061

Outbuilding - £9,861

Build a Mansard loft conversion - £51,861

Loft conversion - £32,445

Build a kitchen extension - £41,861

Hip to gable loft conversion - £41,861

Granny annexe - £86,861

Garden office - £9,861

Convert a Garage - £15,861

Garage - £18,361

Build a flat roof extension - £21,861

Build a dormer loft conversion - £41,861

Concrete foundations - £6,111

Convert a bungalow loft - £28,861

Convert a basement - £35,934