Cost to build a granny annexe in NW9

"I'm very happy for the job what his done" - LONDON,reviewed 29/09/17, SIMONA

Granny Annexe Cost in NW9

Building a granny annexe ranges from £86,664 (F C Builders London ltd based in HA8) to £87,440 (COMPLETE CIVIL ENGINEERING based in HA8), 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 NW9 by posting a job with HaMuch. We will send it to extension builders in NW9 who will be happy to help you.

"Granny annexe" - COLINDALE, job posted 07/12/25

Get extension builder rates instantly

Get extension builder rates instantly
Borough in London
Granny Annexe in Colindale
Granny Annexe in Brent Cross
Granny Annexe in Edgware
Granny Annexe in Mill Hill
Granny Annexe in Wembley
Granny Annexe in Cricklewood
Granny Annexe in Golders Green
Granny Annexe in Stanmore
Granny Annexe in Wealdstone
Granny Annexe in Finchley

Estimates for common extension builder jobs in NW9;

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.