Extension builders in London

2700 extension builders across London.

• B Beni The Builder Ltd London · Loft conversions · 1-9 employees

  Beni The Builder Limited is a family-run general building company offering quality services for loft conversions, extensions, and refurbishments.

• B Benning Construction Ltd Ilford · Main contractor · 1-9 employees

  Benning Construction Ltd offers high-end new builds and refurbishments for public sector, residential, and commercial clients across London and Essex.

• B Benpol Greenford · Main contractor · 1-9 employees

  Benpol is a premium construction company based in London, specialising in new builds, home refurbishments, bespoke joinery, loft conversions, extensio

• B Berati Construction Ltd London · Main contractor · 1-9 employees

  Berati Construction Ltd delivers high-quality residential and commercial projects in London, including new builds, extensions, loft conversions, refur

• B Berco Ltd London · Refurbishment · 1-9 employees

  Berco LTD, established March 2019, is a London-based construction and consultancy company specializing in residential and commercial renovations from

• B Bermuda Construction Ltd London · Extensions · 1-9 employees

  Bermuda Construction is a Surrey-based company specialising in luxury residential builds, bespoke renovations, and high-end property transformations.

• B Berry Ross Ltd Banstead · Extensions

  Quality workmanship and unrivalled attention to detail at an affordable price. Loft conversions, extensions and renovations in south-west London and S

• B Berrylands Builders Ltd. Epsom · Extensions · 1-9 employees

  Berrylands Builders Ltd. offers loft conversions, refurbishments, extensions, and hard landscaping services. With 30 years of experience, they focus o

• B Bertstructure Ltd London · Main contractor

  Professional construction services for domestic and commercial projects. Based in London, serving the UK with quality construction solutions.

• B Besjon Construction Ltd Dagenham · Extensions · 1-9 employees

  BESJON Construction offers expert home extensions, renovations, and commercial construction services in London. Quality craftsmanship to bring your vi

• B Bespoke Build (Surrey) Ltd Weybridge · Refurbishment · 1-9 employees

  Bespoke Build Surrey specialises in high-end residential building services including refurbishments, extensions, loft conversions, and new builds acro

• B Bespoke Builder London London · Design & build

  Hanover Design & Build Ltd, trading as Bespoke Builder London, creates exceptional homes with meticulous craftsmanship and elegant design. Contact our

• B Bespoke Home Rickmansworth · Refurbishment · 1-9 employees

  Bespoke Home creates beautifully crafted living spaces across London, combining construction expertise, bespoke joinery and interior transformation.

• B Bespoke Lofts Ltd Buckhurst Hill · Loft conversions

  Bespoke Lofts is a leading loft conversion and extension company in London with over 30 years of experience in bespoke loft design and building projec

• B Bessy Construction Ltd Rainham · Refurbishment

  Bessy Construction Ltd is a family-run building construction company in London, operating for over 10 years. We specialise in residential and commerci

• B Best Home Builders Ltd London · Extensions · 1-9 employees

  Best Home Builders Ltd provides high-quality residential construction services across London and surrounding areas. We specialise in home extensions,

• B Best London Lofts Ltd Woodford Green · Loft conversions · 1-9 employees

  Best London Lofts Ltd. specialises in bespoke loft conversions, extensions, garages, roofing, and general building services across London.

• B Better Outdoors Ltd Watford · Extensions

  Verandas & Pergolas in London, Slough, Wembley, Bournemouth & the UK. Choose from slimline patio verandas & aluminium pergolas from Better Outdoors.

• B Beyond Build Ltd London · Design & build · 1-9 employees

  Beyond Build London is a design and build company specialising in residential renovations, loft conversions, and extensions in South West London. They

• B Bfg Contractors Ltd South Croydon · Extensions · 1-9 employees

  BFG Contractors Ltd is a Croydon-based construction company specializing in new build homes, extensions, groundworks, RC frames, basements, structural

• B BG Construct London · Main contractor

  B & G Construct Ltd offers bespoke new builds, loft conversions, and home extensions. With over 15 years of experience and 50+ projects completed, the

• B Bhangu Roofing Ltd Feltham · Roofing · 1-9 employees

  Bhangu Roofing Ltd offers professional roofing and building services across West London. New roofs, repairs, extensions, brickwork and more. Call 0738

• B Bhinder Brother Constructions Ltd Uxbridge · Refurbishment · 1-9 employees

  Bhinder Brother Constructions is a trusted construction company specialising in home extensions, loft conversions, renovations, and complete property

• B Bhm Extensions Ltd Enfield · Loft conversions

  BHM Extensions Ltd offers expert craftsmanship for loft conversions, extensions, and refurbishments in London. We provide full-service solutions from

• B Big Ben Roofing Ltd London · Roofing

  Big Ben Roofing Ltd. is a family-run roofing specialist serving London and the Home Counties. With over 15 years of experience, they offer comprehensi

• B BIG Building & Mechanical Dartford · M&E contracting

  Specialists in all your building requirements in Bexeleyheath and South East London. Offering comprehensive building services including mechanical wor

• B Bigness Group London · Refurbishment

  Bigness helps homeowners, landlords and businesses build, maintain and upgrade properties through expert construction, planned maintenance and long-te

• B Bildex Ltd London · Refurbishment

  BILDEX LTD is a dynamic construction company offering a comprehensive range of services across the UK. We specialise in refurbishment, fit-out, and ne

• B Billy Brothers Ltd Erith · Bricklaying

  Billy Brothers Ltd is a family-run construction business in East London, offering brickwork, repointing, extensions, driveways, and painting services

• B Bilt Renovation Ltd Croydon · Main contractor

  Bilt is a bespoke residential construction company offering unparalleled services from consultancy through to final finishes. We specialise in full re

• B Bimar Properties Watford · Extensions

  Bimar Properties Ltd build extensions, loft conversions and full-house renovations across Watford and Hertfordshire. Clean, on-time work, 4.9 stars ac

• B BIR Homes London · House builder

  BIR Homes is a forward-thinking homebuilder established in 2025, combining advanced and traditional build methods with local materials to create quali

• B BIRC Barking · Civil engineering

  BIR Contractors Ltd (BIRC) is a specialised civil and structural engineering contractor delivering projects from concept design to construction. We of

• B Birch Construction Surrey Ltd South Croydon · Extensions · 1-9 employees

  Family run builders in Surrey, specialists in extensions, new builds, refurbishments, loft conversions, and design & build projects. Trusted local exp

• B Bischell Design & Build Company West Kensington · Design & build · 1-9 employees

  Bischell offers stunning residential and commercial building, construction, and architecture services in London, with a Flawless Delivery™ promise for

• B Bisha Contractors Ltd Palmers Green · Main contractor · 1-9 employees

  Bisha Contractors Ltd offers a comprehensive range of building services including new builds, loft conversions, extensions, and refurbishments. With o

• B Bitri Ltd London · Main contractor · 1-9 employees

  Bitri Ltd is a leading construction company in Hendon, offering architectural solutions for dreams. With expert teams, we ensure quality craftsmanship

• B Bj Construct Ltd Dagenham · Extensions

  BJ Construct Ltd delivers building, renovation, handyman and extension services across London and East London. Get a free quote today.

• B Black & White Brickwork Ltd London · Bricklaying · 1-9 employees

  Black & White Brickwork Ltd are professional builders in Greater London, offering brickwork excellence for new builds, extensions, conversions, bounda

• B Blake Build Orpington · Extensions

  Blake Build offers house extensions, full renovations, new builds & conversions in Kent and the South East. Fully managed, turnkey building service.

• B Blake Homes Ltd Hoddesdon · Extensions

  Professional builders in Hertfordshire and Essex offering extensions, conversions, driveways, patios, and general building services. Contact Blake Hom

• B Blero Logistics Swanscombe · Demolition · 1-9 employees

  Construction and Demolition in London and the UK. Blero Logistics offers safe and quality services for residential, commercial, and industrial sectors

• B Blero Ltd Romford · Refurbishment · 1-9 employees

  At Blero construction, we strive for the highest standards in construction and customer satisfaction. We work with the best suppliers and experienced

• B Bless Construction Southall · Extensions

  Trusted builder in Southall with 38 five-star reviews. Extensions, renovations, roofing and landscaping across West London. Get your free quote today.

• B Blue Bull Construction Ltd London · Design & build

  Blue Bull Construction offers a design and build service for home extensions and improvements, aiming to add living space and increase property value.

• B Blue Crane Construction Ltd London · Extensions · 1-9 employees

  Blue Crane Construction Ltd is a leading construction company specializing in extensions and loft conversions. Contact us for your construction needs.

• B Blue Cube Contracting Ltd Hoddesdon · Roofing · 10-49 employees

  Blue Cube Contracting Limited is a specialist roofing and construction contractor established in 2002. They serve the new build and refurbishment mark

• B Blue Mark Contractors Ltd Hayes · Extensions · 1-9 employees

  Blue Mark Contractors Ltd is a leading building services company in West London, specializing in all types of building works. Contact us for satisfact

• B Blue Property Developments Ltd Tadworth · Carpentry & joinery

  Blue Property Developments specialises in carpentry, joinery, extensions, new builds, roofing, bespoke furniture, kitchens, flooring, summer houses an

• B Blue Space Building Hampton · Loft conversions

  Blue Space Building specialises in home improvements, including loft conversions, extensions, kitchens, and bathrooms. They aim to realise your home's