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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
CK Constructions & Development Ltd
CK Constructions & Development Ltd is a trusted extension builder serving customers in EC1N and the surrounding area. Contact us to today to get a ...
"Concrete foundation" - W1T, job posted 16/10/25
JK Doors
JK Doors is a trusted extension builder serving customers in EC1N and the surrounding area. Contact us to today to get a competitive quote for exte...
GS Fabric Ltd
GS Fabric Ltd is an established and experienced local extension builder in EC1N. 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 EC1N and the surrounding area. Contact us to today to get a competitive qu...
Buildwiser
Buildwiser is a trusted extension builder serving customers in EC1N and the surrounding area. Contact us to today to get a competitive quote for ex...
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.
£42/hr
£269/day
plansing
Plansing Ltd
Experience the best architectural design services with PLANSING, where we flawlessly integrate innovative architectural designer products to bring ...
£41/hr
£255/day
TOP CONSTRUCTION
TOP CONSTRUCTION is an established extension buildering business in EC1N. We come highly recommended and provide competitive quotes for your work.<...
£26/hr
£26/day
London Design And Build
London Design And Build
Here at London Design and Build, our team of architects, interior designers, structural engineers and contractors, offer a bespoke, turn-key servic...
£48/hr
£303/day
Masters Construction UK
Joel Cayless white
20 years experience in high end carpentry, joinery and furniture making
£46/hr
£284/day
Kovacs Construction Ltd
At Kovacs Construction, you can rely on our talented builders and engineers to deliver unrivalled building services solutions. Let us show you our ...
£38/hr
£240/day
Kovacs Construction Ltd
Greater London, EC1N
Experienced extension builder ready to quote for your work. Kovacs Construction Ltd is the best extension builder in EC1N. No obligation free quote...
£46/hr
£284/day
Oxford West
Experienced extension builder ready to quote for your work. Oxford West is the best extension builder in EC1N. No obligation free quotes and many h...
£44/hr
£275/day
Andrew Penny Construction
Greater London, EC1N
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
£42/hr
£263/day
SCANDIIN
SCANDIIN is an established and experienced local extension builder in EC1N. Please contact us for a free, no obligation quote and competitive rates...
£48/hr
£299/day
Londoner Building Ltd.
We have the experience and knowledge to carry out any project, big or small. Our team of experts thoroughly plan the budget and manage your projec...
£46/hr
£284/day
Aylaa Exclusive
Need an Extension Builder in EC1N? Aylaa Exclusive has been helping local clients (5 mile radius) with their extension buildering jobs for many yea...
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Use these steps to find Extension Builders in EC1N for FREE!
- Post your job: Click "Get quotes" and briefly describe your job.
- Enter your details: We’ll match you with Extension Builders in EC1N. 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 EC1N 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 - £26,216
Garden office - £10,216
Granny annexe - £87,216
Build a flat roof extension - £22,216
Convert a Garage - £16,216
Hip to gable loft conversion - £42,216
Convert a bungalow loft - £29,216
Build a dormer loft conversion - £42,216
Build a swimming pool - £81,216
Build a Mansard loft conversion - £52,216
Concrete foundations - £6,466
Underpin a building - £17,716
Two storey extension - £88,324
Convert a basement - £39,930
Side return extension - £43,930
Loft conversion - £35,775
Garage - £18,716
Single storey extension - £59,320
Outbuilding - £10,216
Install an RSJ - £2,416
Build a kitchen extension - £42,216
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