From £87,160
Silverwood Construction (Cambridge) Ltd are here to help customers who need an Extension Builder in CB4. We offer a competitive rate to complete al...
From £87,152
Relax... you have found a reliable extension builder in CB4. CROWNBUILD is a friendly and reliable company based in CB4 who consider no job as too ...
From £87,272
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £87,072
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £88,360
Experienced extension builder ready to quote for your work. ALLIED BUILDING ASSOCIATES LTD is the best extension builder in CB4. No obligation free...
From £87,088
Eric Handyman- builder is an established and experienced local extension builder in CB4. Please contact us for a free, no obligation quote and comp...
From £87,560
Relax... you have found a reliable extension builder in CB4. R G BUILDERS is a friendly and reliable company based in CB4 who consider no job as to...
From £86,568
We are a family business providing a one stop shop to meet all your building and renervation needs
From £87,072
Relax... you have found a reliable extension builder in CB4. D Stebbings is a friendly and reliable company based in CB4 who consider no job as too...
From £87,464
Trusted and professional extension builder in CB4. Experienced in all extension buildering work and keeping within budget and on quote. Rescapes Co...

Building a granny annexe ranges from £86,568 (Sean W Scott General Builder based in IP28) to £88,360 (ALLIED BUILDING ASSOCIATES LTD based in CB22), 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 CB4 by posting a job with HaMuch. We will send it to extension builders in CB4 who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Cambridge | £38 | £271 |
| Granny Annexe near South Cambridgeshire | £43 | £305 |
| Granny Annexe near Ely | £40 | £279 |
| Granny Annexe near Huntingdon | £38 | £284 |
| Granny Annexe near St Neots | £51 | £318 |
| Granny Annexe near Haverhill | £37 | £260 |
| Granny Annexe near Huntingdonshire | £36 | £290 |
| Granny Annexe near Biggleswade | £41 | £268 |
| Granny Annexe near Letchworth | £44 | £283 |
| Granny Annexe near North Hertfordshire | £44 | £283 |
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 - £17,777

Two storey extension - £88,415

Build a timber frame extension - £26,277

Build a swimming pool - £81,277

Single storey extension - £60,536

Side return extension - £44,614

Install an RSJ - £2,477

Outbuilding - £10,277

Build a Mansard loft conversion - £52,277

Loft conversion - £36,345

Build a kitchen extension - £42,277

Hip to gable loft conversion - £42,277

Granny annexe - £87,277

Garden office - £10,277

Convert a Garage - £16,277

Garage - £18,777

Build a flat roof extension - £22,277

Build a dormer loft conversion - £42,277

Concrete foundations - £6,527

Convert a bungalow loft - £29,277

Convert a basement - £40,614