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SH Enterprise
Need the extension buildering job done quickly without breaking the bank? SH Enterprise offer fast, reliable, and affordable extension buildering s...
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
Thermodynamic Building Services Ltd
Trusted and professional extension builder in EC2M. Experienced in all extension buildering work and keeping within budget and on quote. Thermodyna...
CK Constructions & Development Ltd
CK Constructions & Development Ltd is a trusted extension builder serving customers in EC2M 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 EC2M. 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 EC2M and the surrounding area. Contact us to today to get a competitive qu...
Buildwiser
Buildwiser is a trusted extension builder serving customers in EC2M 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...
AAA Design Decorators
AAA Design Decorators are here to help customers who need an Extension Builder in EC2M. We offer a competitive rate to complete all your extension ...
AGRI CONSTRUCTION
Need to find an Extension Builder near you for all your extension buildering work?
AGRI CONSTRUCTION provides a local, trusted extension bu...
AB Building Maintainance
Trusted and professional extension builder in EC2M. 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.
£38/hr
£241/day
Builders
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
£41/hr
£255/day
TOP CONSTRUCTION
TOP CONSTRUCTION is an established extension buildering business in EC2M. We come highly recommended and provide competitive quotes for your work.<...
£43/hr
£270/day
Venta Construction
Venta Construction is an established and experienced local extension builder in EC2M. Please contact us for a free, no obligation quote and competi...
£38/hr
£241/day
Shine Your Home
Shine Your Home is an established extension buildering business in EC2M. We come highly recommended and provide competitive quotes for your work.
£42/hr
£262/day
Omniform
Omniform are here to help customers who need an Extension Builder in EC2M. We offer a competitive rate to complete all your extension buildering jo...
£48/hr
£301/day
London Roof Gardens
London Roof Gardens is a trusted extension builder serving customers in EC2M and the surrounding area. Contact us to today to get a competitive quo...
£43/hr
£266/day
Nova Design & Build London Ltd
Get an Extension Builder in EC2M who you can trust. Nova Design & Build London Ltd provide friendly and reliable extension buildering services to t...
Quickly find an Extension Builder in EC2M
Use these steps to find Extension Builders in EC2M for FREE!
- Post your job: Click "Get quotes" and briefly describe your job.
- Enter your details: We’ll match you with Extension Builders in EC2M. 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 EC2M 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 - £26,240

Garden office - £10,240

Granny annexe - £87,240

Build a flat roof extension - £22,240

Convert a Garage - £16,240

Hip to gable loft conversion - £42,240

Convert a bungalow loft - £29,240

Build a dormer loft conversion - £42,240

Build a swimming pool - £81,240

Build a Mansard loft conversion - £52,240

Concrete foundations - £6,490

Underpin a building - £17,740

Two storey extension - £88,360

Convert a basement - £40,200

Side return extension - £44,200

Loft conversion - £36,000

Garage - £18,740

Single storey extension - £59,800

Outbuilding - £10,240

Install an RSJ - £2,440

Build a kitchen extension - £42,240
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