Extension Builders in Watford | MyBuilder

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Some of our top rated extension builders in Watford

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Brent Property Services LTD
Rating: 5 out of 5
Extension Builder in Watford
We are a building and refurbishment company. We are not the type of team that we can do everything, in our team the plumber is plumber , electrician is not bricklayer as well, everyone is doing what they trained for. Works are insured, reference available. At request we provide gas safety certificate and electrical certificate.
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Latest review:
Restoration & Refurbishment- 18 Sep 2019
Work completed to a good standard. Thank you
North Builders LTD
Rating: 4.8 out of 5
Extension Builder in Watford
North Builders LTD have a team of specialists which gives you quality and high standard work on Loft conversions, Extensions, Roofing, Renovation, Refurbishment. We based in London and we cover all M25. With the best quality work and proffesional prices on the market we managed to make happy a lot of costumers around London and not only. Our priority is the costumer to be satisfied, the project to finish in timeline and on budget. Contact us for free quotes.
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Latest review:
Loft Conversion- 2 Nov 2025
Full loft conversion with dorma. Blerim always asked the right questions and made really good suggestions. Very helpful and great quality. Would happily recommend him and his team.
Mbalau Construction LTD
Rating: 5 out of 5
Extension Builder in Watford
Builder with 20 years of experience . I provide a wide range of building services such as: loft conversion, extensions,bathroom refurbishment,house refurbishment , plumbing and electric etc . I have the tools,knowledge and team to build a house from start to finish . I can provide references and pictures of previous work upon request .
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Latest review:
Complete refurbishment of 2 bed 1100 sq ft flat. Including removal internal walls Ripping out and renovating 2 bathrooms. Involving new layout replumbng and relocation of #electrics. Tileing Preparing and laying wood flooring throughout. Fitting shelving and book case. The work over 2 months involved all building skills. Throughout Marcel and his highly skilled crew were efficient clean and resourceful. I would highly recommend for all building and decoration work.
Griffin Carpentry
Rating: 5 out of 5
Extension Builder in Watford
All aspects of carpentry, joinery and General building work. Been doing so for over 10 years With many happy customers.My main goal is to have complete customer satisfaction. I have always gained my work from recommendation.
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Latest review:
Carpentry- 11 Jun 2020
Very satisfied with my service not only helpful and friendly but was also punctual and ensured the job was done efficiently but never rushed , would 100% recommend!
Gent Electrical
Rating: 5 out of 5
Extension Builder in Watford
Undertake all works from changing a light switch to the design and installation of domestic rewiring.No job too small. Building control notification as well
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Latest review:
Electrical- 25 Jan 2023
Gentjan was a thorough professional and a true gentleman. Quoted competitive price, came exactly on time and did job to very high precision. There were some unexpected issues (due to my bespoke kitchen setup, but he improvised amazingly - thinking out of the box. I cannot recommend him enough. Will definitely use him again.
Flynn Construction ltd
Rating: 5 out of 5
Extension Builder in Watford
We are a medium sized Limited Company based in Watford . We specialise in all area's of building - New builds, Refurbishments, Extensions and Paving all welcome. We have a vastly experienced team to cater for all your building needs.
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Latest review:
Extensions- 12 Jun 2020
Gavin project managed the rear story extension on our house from start to finish and was professional and friendly throughout. He was always on hand to offer help and support and we would definitely recommend his services.
CSO Construction & Surveying Ltd
Rating: 5 out of 5
Extension Builder in Watford
At CSO Projects &Surveying Ltd, we specialise in high-quality construction, refurbishment, and property services tailored to both residential and commercial clients. Our experienced team delivers everything from Energy Performance Certificates (EPCs) and stock condition surveys to full refurbishments, extensions, damp surveys/treatment, and garden transformations. We pride ourselves on fast turnaround, honest advice, and a commitment to excellent workmanship. Whether you’re a homeowner, landlord, or developer, we’re here to bring your vision to life with reliable service and transparent pricing.
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Latest review:
Damp Proofing- 11 May 2026
My experience with Samuel was excellent. He provided a professional, comprehensive, and high-value damp survey for my basement. The final report was very thorough, including a detailed technical assessment and numerous photographs that clearly explained the situation. What really stood out was his willingness to answer several follow-up questions regarding the specific remedial work he suggested. His expertise helped clarify that the issues were environmental rather than structural, which provided great peace of mind. Highly recommended for anyone needing a clear, honest, and professional assessment.
RVR PRO BUILDERS LTD
Rating: 5 out of 5
Extension Builder in Watford
With a very high standard of work and experience in kitchen installation, carpentry, built in wardrobes, etc. We offer a range of services to help you with your projects, free quotes and information.
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Latest review:
Kitchen Fitting- 2 Feb 2020
Took out my old kitchen and fit a new one. Excellent professional job, no complaints at all. Would certainly hire again.
HAS CONSTRUCTIONS LTD
Rating: 4.5 out of 5
Extension Builder in Watford
Has Construction London 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 to provide our highest level of expertise in order to achieve excellence in our industry.
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Latest review:
Extensions- 19 Apr 2020
After spending months of planning and finding the perfect company to execute our Porch we decided to Hire Has Constructions LTD. We are very thrilled with everything that was done. Everything has been completed to the highest standard and exceeded all expectations. You can genuinely tell they take pride in their work as they always go above and beyond for every task to ensure perfection and satisfaction. Anyone considering Has Constructions LTD should not hesitate and should contact them for a quote. They may be new to MyBuilder but certainly not new to the trade. They have decades of experience and knowledge. My family found them very experienced and knowledgeable with all regulations and trade standards. In our Porch, some of the tasks they completed included, foundations, block and brick work, guttering, drainage, new roof, roof tiling, electrical planning and wiring, plasterboards, lighting, plastering, painting, tiling, interior door frame and door installation, installation of a composite door with side glass panes, celotex insulations, k render finish and laying driveway paving. They really did all the above which highlights the range of tasks and knowledge that they have in this field. Please see their photos for examples of their work and be assured you are in safe hands. They are reliable, honest and very fair. Would highly recommend to anyone.
MNR
Rating: 5 out of 5
Extension Builder in Watford
House renovator
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Latest review:
Handyman- 22 May 2026
I recently had building work completed by Marcus Rus and was very pleased with the overall standard of workmanship and professionalism shown throughout the project.The work was completed efficiently, communication was good, and any issues that arose were treated promptly. I found Marcus to be polite, hardworking, and kept my property tidy at all times. I would happily recommend him to anyone looking for reliable building services and would use him again in the future.
Nova Building LTD
Rating: 5 out of 5
Extension Builder in Watford
I am an experienced general builder offering a wide range of construction and property improvement services. My work covers all aspects of building, from small repairs to full renovations, ensuring high-quality workmanship and attention to detail at every stage. Services include brickwork, plastering, carpentry, painting and decorating, tiling, flooring, and general maintenance. I take pride in delivering reliable, efficient, and cost-effective solutions tailored to each client’s needs. All work is carried out to a professional standard, with a strong focus on safety, cleanliness, and meeting agreed deadlines. Fully committed to customer satisfaction, I maintain clear communication throughout the project to ensure expectations are met and results are delivered to a high standard.
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Latest review:
We recently had our porch built by Nova Building LTD and we are extremely happy with the result. From the beginning, they were professional, reliable and easy to communicate with. The brickwork and finishing were done to a very high standard, and the team kept the area clean and tidy throughout the work. The porch has made a big difference to the front of our home and looks fantastic. We would definitely recommend Nova Building LTD to anyone looking for quality building work.
Fitzgerald Construction
Rating: 5 out of 5
Extension Builder in Watford
We are a small group of tradesman who have worked together for the last 25 years. We have extensive experience in all types of domestic building work and specialise in open-plan kitchen/diner extensions (including the full structural steelwork supports).
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Latest review:
Bricklaying- 17 Jun 2022
Our brick garden wall was collapsing and I contacted Richard Fitzgerald for a quotation. I'd already had a few quotes from other builders, some of whom had told me I needed work doing that didn't need doing! I found Richard to be trustworthy. He provided a competitive quote. He managed to source bricks that matched the colour of the adjoining wall, gave us a detailed breakdown of the work he would do, and didn't ask for any payment in advance. He built a strong brick wall with a concrete support wall behind. The finished wall is excellent and we are very happy with the work he and his team have done. On finishing the work the premises were left clean and tidy. I am very happy to recommend him.
SCARBO DESIGN & BUILD ltd
Rating: 5 out of 5
Extension Builder in Watford
SCARBO DESIGN AND BUILD is a family run business working within the construction industry with over 100 years combined experience.
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Latest review:
We had a ground floor extension. We were extremely happy with the work completed by Charley. He was reliable, trustworthy and easy to work with throughout the time the extension was being completed. He kept within budget. We absolutely love our new social space. Would highly recommend him to anyone.
Hard landscaping fencing block paving
Rating: 5 out of 5
Extension Builder in Watford
Block paving and fencing groundwork foundation’s/ demolition/ pointing/ drainage/painting and many other works
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Latest review:
Groundwork & Foundations- 22 Apr 2026
Artan and his brother built a shed concrete base in our back garden that is located on a steep ish hill. They are professional and polite, and Artan went over and above to ensure delivery of materials was resolved due to our road being a little challenging for an inexperienced lorry driver. They’ve done a stelar job and we are very pleased with the end product. We are planning to use their services in the near future for other works.
Irz construction ltd
Rating: 5 out of 5
Extension Builder in Watford
Irz construction ltd was created 5 years ago always were recommend to costumers all around London Type of jobs we do Refurbishments Extension Loft conversation Gardening Driveways Painting decorating All projects we did are available to visit and see It in person also ask the owners about their experience with us The director has been 7 years on this industry previously managing another successful construction company
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Latest review:
Restoration & Refurbishment- 19 Nov 2019
Iljaz and his Team were brilliant! I was slightly concerned having no reviews. They found the leak, fixed it and patched up the wall in very tidy and professional manner. He did say he wouldn't be able to come today and updated me, however he made time to come in-between his day to sort out my issue. Not many true trades people like this and very honest and stuck to his word. I would definitely recommend him and would not hesitate to use his team again. Thank Iljaz!
FBF Construction Ltd
Rating: 5 out of 5
Extension Builder in Watford
We take all types of jobs from demolish a house and rebuild at the highest standards.
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Latest review:
Florin extended and completely refurbished our 4-bedroom semi-detached house. This included extensive steelwork, underfloor heating, complete re-plumbing and rewiring, excavation, and an entirely new slate roof as well as varying extensions up to three floors high. I cannot say enough good things about his workmanship, professionalism and reliability. His workmanship makes a perfectionist like myself happy. He is also completely professional: even with our difficult neighbours he was always courteous and understanding, and even helped them sort out issues at a moment’s notice that had nothing to do with his building work on our property. And he is also thoroughly reliable. I cannot think of any instance where he committed to something and did not deliver — he even managed to finish all the work on our house ahead of schedule and on budget. We have been so happy with his work that we contracted him to build us a summer house as well, from scratch, and to complete revamping our front garden including elements of hard landscaping. Again he delivered flawlessly and we are very happy with the result. We also continually receive positive comments from people passing by and just seeing the front garden. We have used several other builders in the past on other properties, including far more expensive ones, and none compare to his level of competence, attention to detail in his workmanship, his complete professionalism and thorough reliability. Now that we have found Florin, we will never look for another builder again. I just hope once others experience what he delivers for themselves he will still have some availability for us in the future!