From £87,032
Need to find an Extension Builder near you for all your extension buildering work?
Ray's Property Services provides a local, trusted extens...
From £86,656
Hello So we do not work and almost any work and it works very well and qualitatively If you are interested we can work in the future
From £86,704
Need to find an Extension Builder near you for all your extension buildering work?
Usaim Builders provides a local, trusted extension build...
From £86,640
Relax... you have found a reliable extension builder in BB11. CROSS CONSTRUCTION LTD is a friendly and reliable company based in BB11 who consider ...
From £86,656
Need an Extension Builder in BB11? M.A Martins has been helping local clients (20 mile radius) with their extension buildering jobs for many years....
From £86,952
Pennine Building Services are here to help customers who need an Extension Builder in BB11. We offer a competitive rate to complete all your extens...
From £86,616
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £86,688
Experienced extension builder ready to quote for your work. Garage Door Services Lancashire is the best extension builder in BB11. No obligation fr...
From £86,856
Experienced extension builder ready to quote for your work. SMH Joinery & Building is the best extension builder in BB11. No obligation free quotes...
From £86,576
Need to find an Extension Builder near you for all your extension buildering work?
Ken Thomas Property Repairs provides a local, trusted ex...

Building a granny annexe ranges from £86,576 (Ken Thomas Property Repairs based in BB9) to £87,032 (Ray's Property Services based in BB11), 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 BB11 by posting a job with HaMuch. We will send it to extension builders in BB11 who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Burnley | £26 | £193 |
| Granny Annexe near Nelson | £24 | £190 |
| Granny Annexe near Accrington | £28 | £211 |
| Granny Annexe near Rawtenstall | £26 | £193 |
| Granny Annexe near Blackburn | £29 | £211 |
| Granny Annexe near Darwen | £30 | £223 |
| Granny Annexe near Calderdale | £28 | £217 |
| Granny Annexe near Rochdale | £25 | £188 |
| Granny Annexe near Bury | £26 | £192 |
| Granny Annexe near Heywood | £26 | £191 |
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 - £17,238

Two storey extension - £87,606

Build a timber frame extension - £25,738

Build a swimming pool - £80,738

Single storey extension - £49,752

Side return extension - £38,548

Install an RSJ - £1,938

Outbuilding - £9,738

Build a Mansard loft conversion - £51,738

Loft conversion - £31,290

Build a kitchen extension - £41,738

Hip to gable loft conversion - £41,738

Granny annexe - £86,738

Garden office - £9,738

Convert a Garage - £15,738

Garage - £18,238

Build a flat roof extension - £21,738

Build a dormer loft conversion - £41,738

Concrete foundations - £5,988

Convert a bungalow loft - £28,738

Convert a basement - £34,548