Cost to build a granny annexe in CB3

Granny annexe cost in CB3 - Sort by rates or availability

Granny Annexe Cost in CB3

Building a granny annexe ranges from £86,920 (Inspire Carpentry and Construction Ltd based in CB24) 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 CB3 by posting a job with HaMuch. We will send it to extension builders in CB3 who will be happy to help you.

"Granny annexe" - SOUTH CAMBRIDGESHIRE, job posted 06/10/25

Get extension builder rates instantly (excluding VAT or callout charges)
Location in UK	Hourly Rate	Daily Rate
Granny Annexe near Cambridge	£38	£271
Granny Annexe near South Cambridgeshire	£43	£305
Granny Annexe near Huntingdon	£38	£284
Granny Annexe near St Neots	£51	£318
Granny Annexe near Biggleswade	£41	£268
Granny Annexe near Ely	£40	£279
Granny Annexe near Huntingdonshire	£36	£290
Granny Annexe near Letchworth	£44	£283
Granny Annexe near Haverhill	£37	£260
Granny Annexe near North Hertfordshire	£44	£283

Estimates for common extension builder jobs in CB3;

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.