Extension Builders in Belsize | MyBuilder

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Some of our top rated extension builders in Belsize

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CONSTA Construction Limited
Rating: 4.6 out of 5
Extension Builder in Belsize
CONSTA Ltd - small construction company based in London, and characterises in flexibility to complete various jobs . There is list of different small or awkward completed jobs in our portfolio as well as more significant projects as loft conversions, extensions, full house reconstructions, new build and Passive House construction as well.
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Latest review:
Extensions- 29 Aug 2021
Communicated well at the start with reasonable cost. work was done well but the finishing was not so great as expected. The end cost was very expensive. Charged by the hour, the team were very slow which was upsetting to see me pay for time where they sat around not doing much. Ensure to agree fixed price. Communication after job is poor, double glazing has warranty which now not being able to communicate with kostas having to pay to get things done that should be covered in warranty. Central heating give huge problems. Do not use for big jobs
Sadia
Rating: 5 out of 5
Extension Builder in Belsize
"Stylish Kitchen & bathroom Fitting Service with prices guaranteed between £4000 to £5000, you can trust us to deliver top-notch service Transform your kitchen into a modern masterpiece with Quality Builders Limited! Our reliable team specializes in fitting any kind of stylish Wren B&Q kitchen, complete with gas cooker, washing, and cooking machine connections.
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Latest review:
Quality Builders completed a remarkable domer and loft conversion for us on 2/10/2023, and we couldn't be more pleased with the results. From the outset, their professionalism and attention to detail were evident. The initial consultation was thorough, and they took the time to understand our vision for the space. Throughout the project, communication was excellent, with regular updates on progress and any necessary adjustments. The craftsmanship displayed by Quality Builders was exceptional. Every aspect of the conversion, from structural work to finishing touches, was executed with precision and care. Their team of builders and contractors demonstrated expertise and skill, resulting in a finished product that exceeded our expectations. Not only did Quality Builders deliver on time, but they also adhered to budgetary constraints without compromising quality. Their transparency and honesty throughout the process gave us peace of mind and confidence in their abilities. The transformation of our space is truly remarkable. The addition of the domer and loft has added both aesthetic appeal and practical functionality to our home. The new space is light-filled, spacious, and seamlessly integrated with the existing structure. Overall, we cannot recommend Quality Builders highly enough. Their commitment to excellence, attention to detail, and professionalism set them apart in the industry. If you're considering a home renovation project, look no further than Quality Builders for exceptional results.
T&S Electrical And Property Services Ltd
Rating: 5 out of 5
Extension Builder in Belsize
WE ARE AN ELECTRICAL & HOME IMPROVEMENT COMPANY WORKING THROUGHOUT GREATER LONDON, PROVIDING SERVICES TO PROUD HOMEOWNERS IN THE LOCAL AREA.
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Latest review:
Electrical- 27 Jan 2026
Taf was great, I wish I had gone to him and not to openrent as I initially did for my Eicr and essential works! Big recommend!
ALSOAA CONSTRUCTION LTD
Rating: 5 out of 5
Extension Builder in Belsize
⸻ Hello! I'm [mohammad], owner of [alsoaa construction ltd]. We have years of experience in home renovations and construction, and I pride myself on providing high-quality, exceptional customer service. Whether you need kitchen and bathroom renovations, painting and decorating, or custom tiling, my team and I are committed to making your vision a reality. We listen carefully to your needs and offer honest advice to ensure long-lasting results.
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Latest review:
Tiling- 29 Nov 2025
Recently had some tiles and splash backs put up. Excellent communications with Mohammad, his team was very punctual and professional the work was done to a very high standard. Pleased with the end result and will be using his service again. Highly recommended thanks again to Mohammad and his team.
T C Construction Ltd
Rating: 5 out of 5
Extension Builder in Belsize
TC CONSTRUCTION is a company build on a new generation of builder's with new ideas and construction systems to provide a hight quality job's for the customers.
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Latest review:
Kitchen Fitting- 22 Mar 2022
Tudor did a great job on our kitchen. He kept us informed on progress all the way through the job allowing time in the morning for questions and then getting on with the work during the day. At the end of each day he showed us and spoke with us about the excellent progress he had made. Very pleased with our lovely new kitchen which is clean, bright and spacious.
fedora and sons
Rating: 4.4 out of 5
Extension Builder in Belsize
I have started working for myself in Europe for 10 years, came over to England with my family and have been working here for 11 years getting business from word of mouth. In my business I manage lots of sub contractors covering a wide range of trades which I have experience in too.
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Latest review:
Painting & Decorating- 24 Feb 2020
Quite literally the worst tradesman I have ever worked within 25 years as a property developer! He came and quoted to paint my house (a good price I must say), little did I know that this meant he would spray everything that he can see, not prepare the surfaces by sanding them down or protects things. This included door handles, hinges, radiators, alarms sensors, tiles and my own furniture and cooking utensils. First time I confronted him about this he said that we would clean everything, and we agreed to carry own. However, it became apparent that we was doing the same as previously discussed. have paid hi 66% of what was agreed, I quickly realised that the damaged he has caused was going to cost me far more and I told him to leave. The next day he turned up at my house with his wife demanding the balance which I refused to give him, they were both shouting outside my house, threatening to call the police. I eventually agreed to pay the 50% of what was left, just so that they would leave. However, even once he had confirmed writing his acceptance of this, he walks over to me and threatened me one final time, saying that he will take me to court etc, there is god and he will see to me! I advise to stay away from this person, better to pay a little more and work with professionals who don't agree with one thing and do another. He paints using a spray, which means you can not touch anything up and he quite literally paints everything he sees!!
HCI CARPENTRY & CONSTRUCTION LTD
Rating: 4.9 out of 5
Extension Builder in Belsize
HCI CARPENTRY & CONSTRUCTION LTD has a proven track record of innovative designs, effective problem solving and attention to detail and our goal is to meet and exceed the expectations of every customer. We take on all types of jobs from small domestic work to larger commercial projects, all carried out to the highest standards, and at very competitive prices.
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Latest review:
Carpentry- 9 Oct 2024
The guys did a great job installing our bannisters and cleaned up afterwards which was brilliant! Will be using them again if we need anymore joinery.
MarioM Construction Ltd.
Rating: 5 out of 5
Extension Builder in Belsize
We have spent 15 years in the construction sector. Having experience both in the private sector and commercial sector, we use innovative and modern technology to complete your work. In effect, we achieve higher precision, shorter work times and due to this a lower cost for you. Our deal with a builders’ merchant allows customers to access unique deals which are not available elsewhere. You can learn even more about us by looking at our past projects
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Latest review:
Extensions- 18 Jul 2016
Mario is a brilliant guy with full knowledge of the job. His workers were very punctual and hardworking and finished the job well. I would definitely recommend Mario to my friends and relatives and will use him in the future. Excellent Finish!!!
PMB Construction (UK) Ltd
Rating: 4.9 out of 5
Extension Builder in Belsize
PMB Construction is London based building company delivering exceptionally high standard services, specialise in most building aspects including loft conversions and extensions. PMB Construction (UK) Ltd is fully insured company, we pride ourselves on high recommendations and customer satisfaction.
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Latest review:
Extensions- 5 Sep 2019
One of the best builders I have ever worked with. PMB take great pride in the work they do and finish to a exceptional level (even better than a lot of premium and expensive builders in the industry). Colin's knowledge about all aspects of building work is unmatched and that shows in the end product that he and his team delivered for me. PMB did a full refurbishment & substantial extension (everything knocked down except 3 external walls) - ground floor ext, first floor ext, loft extension, full re-wire, plumbing, gas, UFH, walls, plastering, fitting, decorating etc. His prices are reasonable and he advised when unexpected costs come up so I could make a decision on what to do. I will definitely use him again.
Almedon construction
Rating: 4 out of 5
Extension Builder in Belsize
Almedon Construction is a privately owned family run business that exudes energy, ambition, and confidence. We leading independent versatile and experienced construction business for more then 15 years providing specialist solutions for Remediation, Groundworks, temporary works, and RC Frames, precast & insitu concrete, frames, external works, loft conversion, extension, Interior painting & decorating, Exterior painting & decorating across London.
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Latest review:
Painting & Decorating- 14 Feb 2023
Edwart is polite, gave a competitive quote and got started straight away. He provided the materials and the workmanship is good enough. He and his team worked hard and stopped smoking in the house after I asked them not to.
FLV PROPERTY LTD
Rating: 5 out of 5
Extension Builder in Belsize
At FLV property ltd we are a team of skilled professionals with extensive experience in the construction industry for over 30 years. Whether you are planning a new build, an extension, a renovation or bespoke projects, our expertise ensures that every job is completed to the highest standards on and within budget. What we offer; •A team of dedicated professionals •Architects •Structural Engineers •Surveyors •Multi skilled tradesmen Attention to detail from design to composition. Our promise; We understand that building projects are significant investment's, and our goal is to make the process as smooth and stress free as possible. From initial consultation to project completion, we work closely with you to ensure your expectations are not only met but exceeded. LETS BUILD TOGETHER!
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Latest review:
Gus and Frank were brilliant. Their attention to detail and care for our project was evident. There was already an issue with our floor which Gus and Frank rectified for us before doing the tiling. The final finish was immaculate. We liked their work so much that we also got them to fit our kitchen worktop. Good communication and clarity throughout the job. Would definitely recommend!
GREAT UK CONSTRUCTION LTD
Rating: 4.9 out of 5
Extension Builder in Belsize
Welcome to GREAT UK CONSTRUCTION LTD! With 6 years of experience, we specialize in interior and exterior renovations alongside meticulous maintenance services. Our commitment to quality and innovation ensures excellence in every project we undertake.Thank you for choosing GREAT UK CONSTRUCTION LTD! Your trust in us fuels our passion for excellence.
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Latest review:
Bathroom Fitting- 24 Mar 2025
Open, Honest and good workmanship. Have got numerous other jobs done by Madalin - he is our go to person for any house projects! Thank You soooo much
Patrick the Builder Ltd
Rating: 5 out of 5
Extension Builder in Belsize
Hi I’m PATRICK from Patrick the builder end I’m very happy to the next job for you General building Brick work Block work Full Refurbishment Loft Conversion Fibreglass roof Garage conversion Dive way Patios Garden conversion & Maintenance
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Latest review:
Extensions- 13 Mar 2022
Patrick and his team were hired to build a garden room. Reasonably priced, offers solutions to problems that might arise during building work, polite and easy to work with. He will also bring his expertise into the project and suggest different ways of doing things or using different products. Happy with the build and will definitely use him again for future projects.
Studi ltd
Rating: 5 out of 5
Extension Builder in Belsize
Hallo. I doing extensions, lofts, drive way, resin bonds, plastering, tiling, fencing. Me and my workers are very professional, I got references and pictures from my works.thanks
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Latest review:
Workmanship Achieved to a very high standard All work done meticulously and within reasonable time frame Professionalism Very professional and maintained paper trial fir all work done Reliability Extremely reliable man of his word. I will hire him in a heart best again. Thanks again for doing an excellent job
AB Integrated Solutions Ltd
Rating: 5 out of 5
Extension Builder in Belsize
At AB Integrated Solutions, we bring over 8 years of experience in delivering high-quality home renovations from start to finish. Our work covers painting, spray painting, plastering, tiling, flooring, kitchen fitting, bathroom installation, and landscaping. Whether you need one room refreshed or your whole house transformed, we have the skills and experience to deliver. We understand that hiring a builder is about trust as much as skill. That is why we keep communication clear, turn up when we say we will, and focus on the details that make the difference. Our goal is simple: to leave every space looking better than you imagined and built to last. From restoring period features to creating modern, open-plan layouts, our team works efficiently, keeps disruption to a minimum, and always respects your home. We manage every stage of the job so you can relax knowing it is in safe hands.
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Latest review:
Painting & Decorating- 13 Nov 2025
The team did a solid job on our extension. They were on time, kept the place organised, and stayed easy to reach throughout the project. The extension came out exactly as agreed and the finish looks clean. They also took care of a few extra jobs for us, including painting the exterior, laying new slabs in the garden, and putting down new grass. The whole place looks tidy and well put together now. I would be happy to use them again.
DGH Construction
Rating: 5 out of 5
Extension Builder in Belsize
Greetings, My name is Defrim and with over 3 decades of international and national experience in the field I provide high quality work and solutions at an outstanding rate. Please feel free to contact me for a free estimate.
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Latest review:
Carpentry- 5 Nov 2022
The Job was done efficiently and I was extremely pleased with the builders professionalism and his experience. He worked with extreme care and once the job was completed he tidied and left the area clean.. I will definitely recommend him..