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Available extension builders in SE18 reply
Select your affordable SE18 extension builder
Tommy House
HOUSE BUILDING SERVICES LIMITED is a trusted extension builder serving customers in SE18 and the surrounding area. Contact us to today to get a com...
Trusted and professional extension builder in SE18. Experienced in all extension buildering work and keeping within budget and on quote. AM Builder...
Philip Boateg
London, SE18
Need to find an Extension Builder near you for all your extension buildering work?
PFM General Building Services Ltd provides a local, trus...
JASPG excel in finding investment opportunities, working together with clients and partners to achieve optimal results. We project manage from star...
From £86,920
Keane & Sons Paving is an established and experienced local extension builder in SE18. Please contact us for a free, no obligation quote and compet...
From £86,904
Builder.Special is an established and experienced local extension builder in SE18. Please contact us for a free, no obligation quote and competitiv...
From £86,960
Satau Construction Works Ltd is an established and experienced local extension builder in SE18. Please contact us for a free, no obligation quote a...
From £86,264
Zachary Bird
Birdz Property Services are here to help customers who need an Extension Builder in SE18. We offer a competitive rate to complete all your extensio...
From £87,080
D S J Building Contractors are here to help customers who need an Extension Builder in SE18. We offer a competitive rate to complete all your exten...
From £87,080
Dry Spell Builders are here to help customers who need an Extension Builder in SE18. We offer a competitive rate to complete all your extension bui...

Building a granny annexe ranges from £86,264 (Birdz Property Services based in DA16) 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 SE18 by posting a job with HaMuch. We will send it to extension builders in SE18 who will be happy to help you.
"Granny annexe" - ABBEY WOOD, job posted 08/01/24
| Borough in London |
|---|
| Granny Annexe in Woolwich |
| Granny Annexe in Charlton |
| Granny Annexe in Abbey Wood |
| Granny Annexe in Thamesmead |
| Granny Annexe in Welling |
| Granny Annexe in Blackheath |
| Granny Annexe in Canning Town |
| Granny Annexe in Eltham |
| Granny Annexe in East Ham |
| Granny Annexe in Erith |
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 - £17,568

Two storey extension - £88,102

Build a timber frame extension - £26,068

Build a swimming pool - £81,068

Single storey extension - £56,360

Side return extension - £42,265

Install an RSJ - £2,268

Outbuilding - £10,068

Build a Mansard loft conversion - £52,068

Loft conversion - £34,388

Build a kitchen extension - £42,068

Hip to gable loft conversion - £42,068

Granny annexe - £87,068

Garden office - £10,068

Convert a Garage - £16,068

Garage - £18,568

Build a flat roof extension - £22,068

Build a dormer loft conversion - £42,068

Concrete foundations - £6,318

Convert a bungalow loft - £29,068

Convert a basement - £38,265