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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...
"Underpin a building" - N7, job posted 23/08/26
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
CK Constructions & Development Ltd
CK Constructions & Development Ltd is a trusted extension builder serving customers in EC1A 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 EC1A 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 EC1A. 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 EC1A and the surrounding area. Contact us to today to get a competitive qu...
Buildwiser
Buildwiser is a trusted extension builder serving customers in EC1A 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 EC1A. We come highly recommended and provide competitive quotes for your work.<...
£48/hr
£303/day
Masters Construction UK
Joel Cayless white
20 years experience in high end carpentry, joinery and furniture making
£48/hr
£299/day
Londoner Building Ltd.
Greater London, EC1A
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 EC1A? Aylaa Exclusive has been helping local clients (5 mile radius) with their extension buildering jobs for many yea...
£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
Experienced extension builder ready to quote for your work. Kovacs Construction Ltd is the best extension builder in EC1A. No obligation free quote...
£42/hr
£263/day
SCANDIIN
Greater London, EC1A
SCANDIIN is an established and experienced local extension builder in EC1A. Please contact us for a free, no obligation quote and competitive rates...
£44/hr
£275/day
Andrew Penny Construction
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
£46/hr
£284/day
Oxford West
Experienced extension builder ready to quote for your work. Oxford West is the best extension builder in EC1A. No obligation free quotes and many h...
£40/hr
£249/day
SDL PKB
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Quickly find an Extension Builder in EC1A
Use these steps to find Extension Builders in EC1A for FREE!
- Post your job: Click "Get quotes" and briefly describe your job.
- Enter your details: We’ll match you with Extension Builders in EC1A. 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 EC1A 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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