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NA Brickwork
Experienced extension builder ready to quote for your work. NA Brickwork is the best extension builder in DA5. No obligation free quotes and many h...
R Tredget & Son
R Tredget & Son are here to help customers who need an Extension Builder in DA5. We offer a competitive rate to complete all your extension builder...
GW Building Solutions
Gary Woolcombe
I am an experienced builder, I jave been in the building game since I left college after doing a 2 year bricklaying apprenticeship.
I ha...
PCO BUILDING SERVICES
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £87,056
Sunny Build Ltd
Sunny Build Ltd is an established and experienced local extension builder in DA5. Please contact us for a free, no obligation quote and competitive...
From £87,032
T L CONSTRUCTION
Trusted and professional extension builder in DA5. Experienced in all extension buildering work and keeping within budget and on quote. T L CONSTRU...
From £87,016
Roger Matharoo
Roger Matharoo
We are family run buisness with great pedigree of enginners.
We have over 40 years knowledge in construction building and are very compe...
From £87,256
FireX Contracts Limited
FireX Contracts Limited is a trusted extension builder serving customers in DA5 and the surrounding area. Contact us to today to get a competitive ...
From £86,864
AJP BUILDING SERVICES
Experienced extension builder ready to quote for your work. AJP BUILDING SERVICES is the best extension builder in DA5. No obligation free quotes a...
From £87,136
Henderson - Ure Building & Construction
Neil Henderson
Building company specialising in mordenising, extending and re modelling your home.
With a 100% record for fulfilling jobs to the highes...
Granny Annexe Cost in DA5
Building a granny annexe ranges from £86,864 (AJP BUILDING SERVICES based in DA7) to £87,352 (R Tredget & Son based in DA15), 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 DA5 by posting a job with HaMuch. We will send it to extension builders in DA5 who will be happy to help you.
"Granny annexe" - BEXLEYHEATH, job posted 10/07/25
- How much does a granny annexe cost to build in the UK?
- What is a granny annexe?
- How big can a granny annexe be?
- How to get planning permission for a granny annexe
- What is the granny annexe tax loophole?
- Does an annexe increase council tax?
- Do you need planning permission to convert a garage into a granny flat?
- Can you claim VAT back on a granny annexe?
- Can I let out my granny annexe?
- Does an annexe increase property value?
- Can a granny annexe be sold separately?
- Do you have to pay stamp duty on an annexe?
Get extension builder rates instantly
| Borough in London |
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| Granny Annexe in Bexley |
| Granny Annexe in Bexleyheath |
| Granny Annexe in Barnehurst |
| Granny Annexe in Sidcup |
| Granny Annexe in Bexley |
| Granny Annexe in Welling |
| Granny Annexe in Dartford |
| Granny Annexe in Crayford |
| Granny Annexe in Swanley |
| Granny Annexe in Belvedere |
Estimates for common extension builder jobs in DA5;
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 - £17,589
Two storey extension - £88,133
Build a timber frame extension - £26,089
Build a swimming pool - £81,089
Single storey extension - £56,776
Side return extension - £42,499
Install an RSJ - £2,289
Outbuilding - £10,089
Build a Mansard loft conversion - £52,089
Loft conversion - £34,583
Build a kitchen extension - £42,089
Hip to gable loft conversion - £42,089
Granny annexe - £87,089
Garden office - £10,089
Convert a Garage - £16,089
Garage - £18,589
Build a flat roof extension - £22,089
Build a dormer loft conversion - £42,089
Concrete foundations - £6,339
Convert a bungalow loft - £29,089
Convert a basement - £38,499