CW Construction are here to help customers who need an Extension Builder in CV21. We offer a competitive rate to complete all your extension builde...
P Harding Home Improvements is an established and experienced local extension builder in CV21. Please contact us for a free, no obligation quote an...
GRB Building & Roofing is a trusted extension builder serving customers in CV21 and the surrounding area. Contact us to today to get a competitive ...
Arvin Nateghi
Arvin Carpentry and Building Services was founded in 2011. We specialise in Bespoke Carpentry, Extensions, and Full Home Refurbishments. Managing D...
Our building services company Thomas Ford Construction Ltd was established in 2017, but have been providing quality building services in Rugby and ...
From £86,704
Experienced extension builder ready to quote for your work. AmCam Construction is the best extension builder in CV21. No obligation free quotes and...
From £86,568
Timber Master LTD are here to help customers who need an Extension Builder in CV21. We offer a competitive rate to complete all your extension buil...

Building a granny annexe ranges from £86,568 (Timber Master LTD based in CV22) to £86,960 (P Harding Home Improvements based in CV22), 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 CV21 by posting a job with HaMuch. We will send it to extension builders in CV21 who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Rugby | £31 | £224 |
| Granny Annexe near Daventry | £31 | £230 |
| Granny Annexe near Coventry | £28 | £221 |
| Granny Annexe near Bedworth | £28 | £219 |
| Granny Annexe near Nuneaton & Bedworth | £28 | £218 |
| Granny Annexe near Kenilworth | £29 | £223 |
| Granny Annexe near Leamington Spa | £27 | £212 |
| Granny Annexe near Hinckley | £29 | £224 |
| Granny Annexe near Warwick | £28 | £213 |
| Granny Annexe near Nuneaton | £29 | £225 |
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 - £17,284

Two storey extension - £87,676

Build a timber frame extension - £25,784

Build a swimming pool - £80,784

Single storey extension - £50,680

Side return extension - £39,070

Install an RSJ - £1,984

Outbuilding - £9,784

Build a Mansard loft conversion - £51,784

Loft conversion - £31,725

Build a kitchen extension - £41,784

Hip to gable loft conversion - £41,784

Granny annexe - £86,784

Garden office - £9,784

Convert a Garage - £15,784

Garage - £18,284

Build a flat roof extension - £21,784

Build a dormer loft conversion - £41,784

Concrete foundations - £6,034

Convert a bungalow loft - £28,784

Convert a basement - £35,070