From £87,040
Need to find an Extension Builder near you for all your extension buildering work?
RB Building Services provides a local, trusted extension...
From £85,960
Member since November 2019
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
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 £86,896
Need to find an Extension Builder near you for all your extension buildering work?
J & C Barker (Builders) Limited provides a local, truste...
From £86,584
Amak Construction is an established and experienced local extension builder in Colne. Please contact us for a free, no obligation quote and competi...
From £86,656
David Wood Building Kitchens And Bathrooms is a trusted extension builder serving customers in Colne and the surrounding area. Contact us to today ...
From £86,816
We are a local building company who specialises in keeping our customers happy we are reliable friendly. We carry out all types of building wo...
From £86,744
H.B.S is an established extension buildering business in Colne. We come highly recommended and provide competitive quotes for your work.
From £86,768
New era developments is a small local limited company. Who create better living spaces . On time and on buget. To a very high standard. Thanks tony...
From £86,856
Need an Extension Builder in Colne? Smart building solutions Blackburn ltd has been helping local clients (20 mile radius) with their extension bui...

Building a granny annexe ranges from £85,960 (Aquatec Builder based in OL10) to £87,040 (RB Building Services based in BD16), 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 Colne by posting a job with HaMuch. We will send it to extension builders in Colne who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Nelson | £27 | £214 |
| Granny Annexe near Burnley | £29 | £219 |
| Granny Annexe near Keighley | £30 | £226 |
| Granny Annexe near Calderdale | £33 | £253 |
| Granny Annexe near Accrington | £33 | £243 |
| Granny Annexe near Rawtenstall | £29 | £213 |
| Granny Annexe near Bingley | £30 | £228 |
| Granny Annexe near Halifax | £32 | £243 |
| Granny Annexe near Blackburn | £33 | £246 |
| Granny Annexe near Shipley | £29 | £226 |
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 - £17,198

Two storey extension - £87,546

Build a timber frame extension - £25,698

Build a swimming pool - £80,698

Single storey extension - £48,952

Side return extension - £38,098

Install an RSJ - £1,898

Outbuilding - £9,698

Build a Mansard loft conversion - £51,698

Loft conversion - £30,915

Build a kitchen extension - £41,698

Hip to gable loft conversion - £41,698

Granny annexe - £86,698

Garden office - £9,698

Convert a Garage - £15,698

Garage - £18,198

Build a flat roof extension - £21,698

Build a dormer loft conversion - £41,698

Concrete foundations - £5,948

Convert a bungalow loft - £28,698

Convert a basement - £34,098