Cost to build a granny annexe in Borehamwood

Granny Annexe Cost in Borehamwood

Estimates for granny annexe near Borehamwood

Building a granny annexe ranges from £87,024 (Mario Prajar Building Services based in HA2) to £87,560 (Rafix Building based in EN4), 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 Borehamwood by posting a job with HaMuch. We will send it to extension builders in Borehamwood who will be happy to help you.

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

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Location in UK	Hourly Rate	Daily Rate
Granny Annexe near Borehamwood	£42	£271
Granny Annexe near High Barnet	£43	£272
Granny Annexe near Bushey	£43	£278
Granny Annexe near Potters Bar	£43	£273
Granny Annexe near Brent Cross	£43	£273
Granny Annexe near Watford	£43	£280
Granny Annexe near Harrow	£43	£270
Granny Annexe near Muswell Hill	£44	£273
Granny Annexe near St Albans	£43	£272
Granny Annexe near Hatfield	£42	£266

Estimates for common extension builder jobs in Borehamwood;

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.