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Lp Townsend Brickwork
Lee Townsend
Need to find an Extension Builder near you for all your extension buildering work?
Lp Townsend Brickwork provides a local, trusted extensio...
GDW Construction
Relax... you have found a reliable extension builder in London. GDW Construction is a friendly and reliable company based in London who consider no...
OAK HOUSE BESPOKE BUILDERS
Need to find an Extension Builder near you for all your extension buildering work?
OAK HOUSE BESPOKE BUILDERS provides a local, trusted ext...
SDS Constructions
Sean Smithers
Our building services company SDS Constructions has been established for many years and have been providing customers in Dagenham and the surroundi...
Optimus Build Solutions
Vasile Boghean
Optimus Build Solutions delivers exceptional construction services in London and surronding areas. Specializing in bathroom and kitchen refurbishme...
SC General Builders Ltd
SC General Builders Ltd are here to help customers who need an Extension Builder in London. We offer a competitive rate to complete all your extens...
Mandala Building Services
Mandala Building Services is a family-owned design and build maintenance company, encompassing everything from residential refurbishment to large-s...
J&J Building Solutions
Experienced extension builder ready to quote for your work. J&J Building Solutions is the best extension builder in London. No obligation free quot...
From £19,700
Banga Decoration
Sebastian Banga
Member since August 2025
Banga decoration. Is Base in south London for number of year Banga decoration is a small company. Wich provide an excellent job to the custom...
Garage build cost in London
Builders charge between £18,420 (Lp Townsend Brickwork based in SL2) and £19,732 (Optimus Build Solutions based in Rm1) in London to build a garage, but these costs are only estimates.
Comparing extension builders estimates for building a garage gives you an idea of who will be better value, but the best way to compare costs is to get actual quotes.
Get real quotes to build a new garage in London by posting a job with HaMuch and we will send it to extension builders in London.
- How much does it cost to build a garage?
- Factors that affect the cost of building a garage
- What is the most expensive part of building a garage?
- What is the cheapest style of garage to build?
- Do you need footings for a garage?
- How long does it take to build a garage?
- Do you need planning permission for a garage?
- What happens if you build a garage without planning permission?
- Can I build a garage without building regulations?
- Does a garage add value to a house?
- Can I build a garage myself?
- Can you live in a garage legally?
Get extension builder rates instantly
Estimates for common extension builder jobs in London;
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 - £18,021
Two storey extension - £88,781
Build a timber frame extension - £26,521
Build a swimming pool - £81,521
Single storey extension - £65,416
Side return extension - £47,359
Install an RSJ - £2,721
Outbuilding - £10,521
Build a Mansard loft conversion - £52,521
Loft conversion - £38,633
Build a kitchen extension - £42,521
Hip to gable loft conversion - £42,521
Granny annexe - £87,521
Garden office - £10,521
Convert a Garage - £16,521
Garage - £19,021
Build a flat roof extension - £22,521
Build a dormer loft conversion - £42,521
Concrete foundations - £6,771
Convert a bungalow loft - £29,521
Convert a basement - £43,359