Cost to build a granny annexe in Swanley

Granny Annexe Cost in Swanley

Estimates for granny annexe near Swanley

Building a granny annexe ranges from £86,968 (UNIVERSAL CONSTRUCTION based in BR8) to £87,616 (HOUSE BUILDING SERVICES LIMITED based in DA16), 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 Swanley by posting a job with HaMuch. We will send it to extension builders in Swanley who will be happy to help you.

"Granny annexe" - BEXLEYHEATH, job posted 10/07/25

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Location in UK	Hourly Rate	Daily Rate
Granny Annexe near Bexley	£42	£265
Granny Annexe near Dartford	£41	£265
Granny Annexe near Bromley	£43	£268
Granny Annexe near Northfleet	£41	£261
Granny Annexe near Sevenoaks	£38	£234
Granny Annexe near Grays	£41	£261
Granny Annexe near South Ockendon	£42	£264
Granny Annexe near Lewisham	£43	£268
Granny Annexe near Gravesend	£40	£260
Granny Annexe near Greenwich	£44	£268

Estimates for common extension builder jobs in Swanley;

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.