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Andy Harris Construction
Andy Harris
Andy Harris Construction is an established and experienced local extension builder in Barnes. Please contact us for a free, no obligation quote and...
London Construction
London Construction is an established and experienced local extension builder in Barnes. Please contact us for a free, no obligation quote and comp...
AVIB City Construction Ltd
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
1st & 2nd Fix Vasconstruct
Vas Constructs
RUBBERCOVER™ EPDM Permaroof rubber cover and roof system. Lead flashing. NCTS. Timber Frame Buildings. Refurbish fit out, structural ...
Building Vision London Ltd
Building Vision London Ltd is a trusted extension builder serving customers in Barnes and the surrounding area. Contact us to today to get a compet...
Red Box Maintenance Ltd
Red Box are a Fulham-based building and decorating business who work in West and Southwest London, and who specialise in fine interior renovations,...
AJ Wells
Need to find an Extension Builder near you for all your extension buildering work?
AJ Wells provides a local, trusted extension buildering ...
AG-Renovation Ltd
AG-Renovation Ltd is a trusted extension builder serving customers in Barnes and the surrounding area. Contact us to today to get a competitive quo...
Newpark Construction
Newpark Construction are here to help customers who need an Extension Builder in Barnes. We offer a competitive rate to complete all your extension...
Ferdas Design & Build Ltd
At Ferdas Design & Build Ltd we have been fitting bespoke bathrooms since 2013. We pride ourselves on being the go-to bathroom fitters for discerni...
Extension builder estimates (based on hourly rates) to build a single storey extension in Barnes
- How much does a single storey extension cost?
- Single storey extension cost calculator
- What size single storey extension can I build without planning permission?
- Do I need an architect for an extension?
- How deep do foundations need to be for a single storey extension?
- Is it cheaper to have an extension or a conservatory?
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Estimates for common extension builder jobs in Barnes;
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 - £17,964
Two storey extension - £88,696
Build a timber frame extension - £26,464
Build a swimming pool - £81,464
Single storey extension - £64,280
Side return extension - £46,720
Install an RSJ - £2,664
Outbuilding - £10,464
Build a Mansard loft conversion - £52,464
Loft conversion - £38,100
Build a kitchen extension - £42,464
Hip to gable loft conversion - £42,464
Granny annexe - £87,464
Garden office - £10,464
Convert a Garage - £16,464
Garage - £18,964
Build a flat roof extension - £22,464
Build a dormer loft conversion - £42,464
Concrete foundations - £6,714
Convert a bungalow loft - £29,464
Convert a basement - £42,720