How it works
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Post a job
Tell us about your job, and we'll alert suitable extension builders in London. It’s simple and free.
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Tradespeople respond
Once your job is posted, you'll get responses from interested extension builders through the website.
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Review and choose
Browse profiles, work history, and feedback, then choose who you wish to share your details with.
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Extension Kings Ltd
85 Feedback reviews, 100% positiveExtension Builder working in LondonTrade Member since 2017I've been working in building trade for over 20 years , I can undertake any job small and big from foundations to the roof and anything between. I can provide any references and I have insurance of £5 million. Me and my team take pride at what we do and we do it first read more
Latest Conversions - General feedback review:
Brick wall alterations - work needed to start ASAP
Highly recommend! Really pleased with the work. Alban was always responsive, helpful and kept his promises. Will definitely use again.
By bella_clo on 1st Apr, 2022
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PAL LEE GROUP LTD
5 Feedback reviews, 100% positiveExtension Builder working in LondonTrade Member since 2018PAL LEE GROUP LTD is a London based construction company carrying out its services over the capital. We are a skilful team of builders with a number of successfully completed projects in property extensions and full house refurbishments. Our company provides complete project read more
Latest Extensions feedback review:
Kitchen extension and fit out
Pal Lee carried out a kitchen side and rear extension in our flat. They have been very professional throughout the project, careful to detail and easy to communicate with. The result is outstanding. We are so pleased with the work carried...
By matilde on 10th Oct, 2020
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Bluelime Design and Build
22 Feedback reviews, 95% positiveExtension Builder working in LondonTrade Member since 2012Bluelime is a one stop shop for all your planning, interior design , structural engineering and construction needs. With over 8 years worth of happy customers we pride ourselves with our honest and inventive solutions. Free initial consultations and proven track record of read more
Latest Architecture feedback review:
Extension & Refurb - Architectural & Structural Drawing
Bluelime Architects helped us design our new house - from helping us maximise the utility of the space available to us, to designing the side and rear extensions, including detailed structural drawings and engineers calculations. Both Alton...
By chris_morgan_79 on 4th Dec, 2018
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My Trusted Builder Ltd
9 Feedback reviews, 89% positiveExtension Builder working in LondonTrade Member since 2013When choosing My Trusted Builder know that our key focus is on customer satisfaction. We are here to add value to your project with our team of expert surveying and contracts managers. As a member of The Federation of Master Builders we are recognised for the quality of our read more
Latest Extensions feedback review:
Loft/first floor conversion, ground floor extension
A massive and expensive disappointment. Alex made a big play about the quality of his work when selling his services to me. “Expensive but worth it!” said the banner put up outside my house. It was certainly expensive, however a...
By ngates on 10th Oct, 2019
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Glorum
5 Feedback reviews, 100% positiveExtension Builder working in LondonTrade Member since 2017GLORUM Limited is a London-based construction company with 10+ years of building experience in domestic and commercial projects. GLORUM Ltd is your one-stop construction company made up of highly qualified and skilled tradespeople, designers and engineers that can read more
Latest Extensions feedback review:
Buildings extension - Permission granted
Glorum has been extremely professional and hard working. They fulfilled the deadlines given. They have good team of all trades. Their admin is strong as well. They give attention to detail and come up with new ideas and technology. Great...
By user_der on 16th Nov, 2018
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SIA Design Build
5 Feedback reviews, 100% positiveExtension Builder working in LondonTrade Member since 2017We are a design build firm with over 14 years experience in the construction and architecture sector. We both have masters in architecture and are capable of assisting with all aspects of services. We have worked on over 40 residential projects in London since opening and read more
Latest Extensions feedback review:
Rear extension + other works
Good craftmanship overall.
By emmanuel_27 on 2nd Aug, 2021
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REA Construction LTD
6 Feedback reviews, 100% positiveExtension Builder working in LondonTrade Member since 2013The company’s success is built on the strong belief of quality work, attention to detail and on-time completion. Rea Construction Ltd has an in house team of builders, architects, and interior designers with all the relevant skills and qualifications which enable us to read more
Latest Extensions feedback review:
Ground floor extension to Edwardian terrace
We couldn’t be happier with the professionalism and quality of workmanship from REA Construction. The project was delivered within budget and on time. We lived in the property during the work and we, our neighbours and the site were...
By suzanneml on 8th Dec, 2017
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J&N Contractors
9 Feedback reviews, 100% positiveExtension Builder working in LondonTrade Member since 2013We are a family run building company , originally established in the East End of London back in 1971 , now operating from Essex, covering the whole of London and Essex. Approved by trading standards with a £5million public liability insurance. read more
Latest Restoration & Refurbishment feedback review:
Package of external works for home in N4
JNC were great - brilliant crew of people for full scaffolding, render repairs, external repainting, and a miscellany of other repairs, including some internal window / bathroom repairs to private flats. Workmanship was to a high standard...
By vickin4 on 7th Apr, 2018
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Musawir Architecture Limited
6 Feedback reviews, 100% positiveExtension Builder working in LondonTrade Member since 2020We are fully qualified & established architectural design team, with high success rates in obtaining residential and commercial planning approval. A multi-disciplinary consultancy with 10 years combined experience. We provide services for all projects, new builds, read more
Latest CAD/Drawings feedback review:
Architect Needed for Floorplan remodelling
Great job by Abul. Always responsive and willing to make the necessary changes to the floorplan that we had discussed. He's a versatile person as well and was happy to provide feedback on his thoughts about the project I was looking to...
By guydemi on 1st Mar, 2021
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Signature 1 Construction Ltd
3 Feedback reviews, 100% positiveExtension Builder working in LondonTrade Member since 2019Signature 1 Construction LTD is a family run business with over 20 years experience in the building industry. We specialise in extensions, loft conversions and full house refurbs. Every job we undertake we take great care of the clients house and are experienced project read more
Latest Extensions feedback review:
Care Home Extension
I highly recommend signature 1 construction, the experience has been great from the start. Marin and his team are great and always explain each stage of the build and happy to answer any questions/anxieties you may have. Costa the foreman...
By amin_thobani on 26th Aug, 2019
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Pacho Build ltd
3 Feedback reviews, 100% positiveExtension Builder working in LondonTrade Member since 2018At PACHO Build, we have years of experience in the building and joinery industry. We have tackled projects large and small and are always eager to show our creative abilities to new clients. Through experience we understand communication is the key factor to a successful read more
Latest Loft Conversions feedback review:
Loft conversion for detached house
I decided to give the job to Jonathan after meeting 3 other builders as he was very thorough in his site survey. He made some fantastic recommendations such as installing a velux balcony and skylights. We now have two extra bedrooms and a...
By sarora82 on 6th Sep, 2018
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Has Constructions Ltd
3 Feedback reviews, 100% positiveExtension Builder working in LondonTrade Member since 2020Has Constructions LTD, We are a building company with more than 30 years of experience in all chosen aspects of the construction industry. We specialise in works such as: -New builds -Extensions -Loft conversions -Full refurbishments -Electrics/ Plumbing We aim read more
Latest Extensions feedback review:
Side Return Kitchen Extension and 2*bathrooms 1st floor
Has and Muhamet are excellent tradesmen. There is nothing Hasan cannot do and anything he does he takes pride in doing a very high quality job. Muhamet was very engaged with the process, always responsive and always happy to help, very...
By jordan92412 on 11th Jan, 2022
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Samul Construction LTD
22 Feedback reviews, 100% positiveExtension Builder working in LondonTrade Member since 2008Estimate Prices From: * Loft Conversion £50k(labour+materials+scaffolding) * Home Extensions £3-4k per square metre * Basement £3-8k per square meter (labour+materials). * Bathroom refurbishment £8k (labour). read more
Latest Extensions feedback review:
3 by 3 back extension
June 2011 - Jan and Chris completed our extension within the time-scales agreed (8 weeks) and contract terms. Their approach was very professional, and within the price. No extras were charged or unnecessary surprises outside written...
By mr_greyson on 16th Jul, 2012
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Azure Design Ltd
7 Feedback reviews, 86% positiveExtension Builder working in LondonTrade Member since 2019Hi there! My name is Gaz and I am a builder who has been in the building trade for well over 10 years. I have completed numerous jobs all over London and greater London, my specialities include; loft conversions, extensions as well as general refurbishments. My previous read more
Latest Extensions feedback review:
W12 15M2 Side & Rear extension to terraced flat
This project ended with contract termination & Court case to recover costs fixing Gaz’s building failures. Gaz (Gazmend) Gashi of Azure Design Ltd has been blacklisted by Assent Building Control due to these failures. Initially things...
By noa on 29th Mar, 2021
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GS GEO LIMITED
53 Feedback reviews, 98% positiveExtension Builder working in LondonTrade Member since 2016Extention ,loft, House refurbishment, Bathroom refurbishment, decorating, wallpapering, fix coving, Tiling and laminate, service. available 7 days a week . read more
Latest Extensions feedback review:
Ground floor flat - Kitchen Extension & Bathroom refurb
We have recently finished a full flat renovation with a side return open plan extension. From the start Giorgi was very helpful not just in relation to the building works but in guiding us in the design and suggestions on ways to improve...
By lizzie_jane on 20th Oct, 2021
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Inside Out
78 Feedback reviews, 99% positiveExtension Builder working in LondonTrade Member since 2015Inside Out was formed in 2009. We are an established, London based building company operating throughout London and within the M25. We deliver an honest and straight forward service, with quality workmanship at the forefront of everything we do. read more
Latest Restoration & Refurbishment feedback review:
Instal new kitchen, flooring and tiles
Nico was absolutely amazing, him and his team are so caring and make sure everything is done I’m the best way possible, I have already recommended him to one of my friends who got a kitchen installed as well. Really happy with the...
By beatriz78195 on 22nd Mar, 2022
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FNA Engineering Ltd
5 Feedback reviews, 100% positiveExtension Builder working in LondonTrade Member since 2019FNA Engineering is a private limited company that was established in 2017, we are based in Acton, London. The team has over 11 years of experience in the field of construction, particularly the residential field. Area of residential experience would be house extensions, read more
Latest Bricklaying feedback review:
New walls
Professional, reliable and efficient team. Always responds to all enquirers, good aftercare and follow up. Would highly recommend.
By mohsen1981 on 29th Sep, 2019
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MYCO Contractors Limited
8 Feedback reviews, 100% positiveExtension Builder working in LondonTrade Member since 2019We are experienced and hard working team of professionals who carry out complete extension building and refurbishment projects. Our work speaks for itself. We move from a client to another purely through recommendations and our clients are always happy to share nice read more
Latest Extensions feedback review:
General works on flat
Myco carried out some works to our leaking roof terrace which included: (i) diagnosing the cause of the leak, (ii) taking up and completely replacing everything above the roof timber joists, (iii) laying new tiling on the terrace, and (iv)...
By hnewton on 16th Mar, 2020
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Craft of London
10 Feedback reviews, 100% positiveExtension Builder working in LondonTrade Member since 2012Craft of London are an established building company, specialising in design and build projects, creating bespoke interiors and homes. Our workmanship is of the best standard in London for either small, medium or grand designs. read more
Latest Restoration & Refurbishment feedback review:
Fitting new window and internal reconfiguration
Excellent job done by Kel and the team to a high standard and with minimum fuss. Kept up to date on any issues and work completed within timeframe. Easy to work with and would certainly use again.
By rollo_94 on 17th Jun, 2014
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Good Choice Builders LTD
1 Feedback review, 100% positiveExtension Builder working in LondonTrade Member since 2018We are the building company that specialized in Loft Conversions, Extensions and Refurbishments. By this moment we worked as a subcontractors, now we have all neccessary and feel free to participate to the tenders, prepare the informative and detailed contracts and read more
Latest Extensions feedback review:
3 x 3M extension
A very efficient builder who did the plans which where passed first time when we needed help he found someone to help very clean and tidy and on time
By karen98090 on 8th Jul, 2019
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