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Torrington
Torrington Design
NIECEIC / NAAPIT GASSAFE WATER REGULATIONS We offer services towards completion of high end construction projects to dis...
"Did callout made safe my elctrical work thanks" - reviewed 16/05/23, REECYRUSSO
SH Enterprise
Need the extension buildering job done quickly without breaking the bank? SH Enterprise offer fast, reliable, and affordable extension buildering s...
"Underpin a building" - N7, job posted 23/08/26
Thermodynamic Building Services Ltd
Trusted and professional extension builder in EC1Y. Experienced in all extension buildering work and keeping within budget and on quote. Thermodyna...
"Concrete foundation" - W1T, job posted 16/10/25
CK Constructions & Development Ltd
CK Constructions & Development Ltd is a trusted extension builder serving customers in EC1Y and the surrounding area. Contact us to today to get a ...
GS Fabric Ltd
GS Fabric Ltd is an established and experienced local extension builder in EC1Y. Please contact us for a free, no obligation quote and competitive ...
JM Building Services
JM Building Services is a trusted extension builder serving customers in EC1Y and the surrounding area. Contact us to today to get a competitive qu...
Buildwiser
Buildwiser is a trusted extension builder serving customers in EC1Y and the surrounding area. Contact us to today to get a competitive quote for ex...
Renobuild Group
Daniel Dixon
Need to find an Extension Builder near you for all your extension buildering work?
Renobuild Group provides a local, trusted extension buil...
Brooks Builders & Decorators
Brooks Builders & Decorators is an established extension buildering business in EC1Y. We come highly recommended and provide competitive quotes for...
COMPLETE BUILDING COMPANY
Frankie
COMPLETE BUILDING COMPANY are here to help customers who need an Extension Builder in EC1Y. We offer a competitive rate to complete all your extens...
AB Building Maintainance
Trusted and professional extension builder in EC1Y. Experienced in all extension buildering work and keeping within budget and on quote. AB Buildin...
Q Lofts and Extensions
Anthony Sullivan
We build Lofts. We build Extensions. We undertake conversions. Our Terms and conditions apply as shown in our starter packs.
£41/hr
£255/day
TOP CONSTRUCTION
TOP CONSTRUCTION is an established extension buildering business in EC1Y. We come highly recommended and provide competitive quotes for your work.<...
£40/hr
£252/day
CAPITAL CONSTRUCTION LIMITED
Trusted and professional extension builder in EC1Y. Experienced in all extension buildering work and keeping within budget and on quote. CAPITAL CO...
£43/hr
£266/day
Fornia Build Ltd
Fornia Build Ltd is an established and experienced local extension builder in EC1Y. Please contact us for a free, no obligation quote and competiti...
£51/hr
£316/day
Fornia Build Ltd
Bring your vision to life with Fornia build. Our main aim is to design and build exceptional residential properties in prime locations, to the high...
£43/hr
£270/day
Venta Construction
Greater London, EC1Y
Venta Construction is an established and experienced local extension builder in EC1Y. Please contact us for a free, no obligation quote and competi...
£43/hr
£266/day
Nova Design & Build London Ltd
Get an Extension Builder in EC1Y who you can trust. Nova Design & Build London Ltd provide friendly and reliable extension buildering services to t...
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- Post your job: Click "Get quotes" and briefly describe your job.
- Enter your details: We’ll match you with Extension Builders in EC1Y. We’ll notify you via text or email when an Extension Builder is available to quote.
- Select your Extension Builder: Compare Extension Builders interested in working with you. You can use HaMuch to safely message local EC1Y Extension Builders or phone them directly - you’re in control!
Local Extension Builders in London Boroughs
Job estimates from extension builders near you
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.
Build a timber frame extension - £26,232
Garden office - £10,232
Granny annexe - £87,232
Build a flat roof extension - £22,232
Convert a Garage - £16,232
Hip to gable loft conversion - £42,232
Convert a bungalow loft - £29,232
Build a dormer loft conversion - £42,232
Build a swimming pool - £81,232
Build a Mansard loft conversion - £52,232
Concrete foundations - £6,482
Underpin a building - £17,732
Two storey extension - £88,348
Convert a basement - £40,110
Side return extension - £44,110
Loft conversion - £35,925
Garage - £18,732
Single storey extension - £59,640
Outbuilding - £10,232
Install an RSJ - £2,432
Build a kitchen extension - £42,232
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