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London Construction
London Construction is an established and experienced local extension builder in SW12. Please contact us for a free, no obligation quote and compet...
QA's Pointing and Brick Repair
QA's Pointing Brick Repair
Relax... you have found a reliable extension builder in SW12. QA's Pointing and Brick Repair is a friendly and reliable company based in SW12 who c...
Langston Builders
Langston Builders is a trusted extension builder serving customers in SW12 and the surrounding area. Contact us to today to get a competitive quote...
Renaissance Timothy Brewer Ltd
Renaissance Timothy Brewer Ltd is an established extension buildering business in SW12. We come highly recommended and provide competitive quotes f...
PW Construction & Renovation Ltd
PW Construction & Renovation Ltd is a trusted extension builder serving customers in SW12 and the surrounding area. Contact us to today to get a co...
D & G Building & Decorating
Experienced extension builder ready to quote for your work. D & G Building & Decorating is the best extension builder in SW12. No obligation free q...
PRM BUILDING
Relax... you have found a reliable extension builder in SW12. PRM BUILDING is a friendly and reliable company based in SW12 who consider no job as ...
QSA Builders Ltd
QSA Builders Ltd are here to help customers who need an Extension Builder in SW12. We offer a competitive rate to complete all your extension build...
Local Building Services
Trusted and professional extension builder in SW12. Experienced in all extension buildering work and keeping within budget and on quote. Local Buil...
R C BUILDER
R C BUILDER is a trusted extension builder serving customers in SW12 and the surrounding area. Contact us to today to get a competitive quote for e...
Cost of a two storey extension in SW12
Costs range from £88,024 (Local Building Services based in SW16) to £88,672 (London Construction based in SW11), but these are just estimates. The best way to compare costs is to get real quotes from real builders.
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- How much does a two storey extension cost?
- Factors affecting the cost of a double storey extension
- How much value does a two storey extension add to a property?
- Types of two storey extension
- How long does a two storey extension take to build?
- Do you need planning permission for a two storey extension?
- What is the 45-degree rule for two storey extensions?
- Do you need an architect for an extension?
- How to finance an extension
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Estimates for common extension builder jobs in SW12;
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 - £17,710
Two storey extension - £88,316
Build a timber frame extension - £26,210
Build a swimming pool - £81,210
Single storey extension - £59,208
Side return extension - £43,867
Install an RSJ - £2,410
Outbuilding - £10,210
Build a Mansard loft conversion - £52,210
Loft conversion - £35,723
Build a kitchen extension - £42,210
Hip to gable loft conversion - £42,210
Granny annexe - £87,210
Garden office - £10,210
Convert a Garage - £16,210
Garage - £18,710
Build a flat roof extension - £22,210
Build a dormer loft conversion - £42,210
Concrete foundations - £6,460
Convert a bungalow loft - £29,210
Convert a basement - £39,867