Extension Builders in Harpenden | MyBuilder

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Some of our top rated extension builders in Harpenden

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BB Construction Luton LTD
Rating: 5 out of 5
Extension Builder in Harpenden
BB Construction Luton LTD is located in Luton and is your first and last choice in Construction industry. We are specialised in residential and commercial new construction and renovations. With over 8 years of experince we have been working in and all around London. We also specialise in all kinds of dry lining and plastering works.
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Latest review:
Plastering- 29 Aug 2019
Great work, and a great price. Started and finished on dates required. Went above and beyond, also done a few extra bits within the agreed money. Will be using again in the future.
Dnr Build
Rating: 5 out of 5
Extension Builder in Harpenden
DNR Build is a trusted building company based in Stevenage, providing high-quality building and renovation services across Hertfordshire and surrounding areas. With years of experience in the trade, we take pride in delivering reliable workmanship, clear communication, and attention to detail on every project. From extensions and conversions to full refurbishments, we aim to complete all work to the highest standards, on time and within budget
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Latest review:
Super professional friendly and great quality. Would massively recommend for any building wor.
Newell groundworks ltd
Rating: 5 out of 5
Extension Builder in Harpenden
A small family run business with over 20 years experience.
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Latest review:
Groundwork & Foundations- 15 Oct 2025
Stuart was great to work with. Knowledgeable, hardworking and committed to doing a great job. We will be using his services again in the future.
Vb builders ltd
Rating: 5 out of 5
Extension Builder in Harpenden
I have over 25 years’ experience in the construction industry. I am the Managing Director of VB builders and I work hands on with a small team completing a variety of projects including extensions and loft conversions. Trust and customer service are the utmost importance to us.
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Latest review:
Extensions- 25 Feb 2020
I was hesitant at first to ask VB builders to quote, as they had no reviews but now I know why - he gets work through word of mouth, so doesn't need to advertise! I chose Vedat because he seemed trustworthy and attentive, he didn't let us down. He was happy to give references and took a keen interest in our plans. Vedat worked continuously to complete our job. He and his team worked very hard to complete our work to a really high standard. We'd be happy to recommend him.
Ciprian carpentry
Rating: 4.8 out of 5
Extension Builder in Harpenden
Well established carpentry business, from 2007,working along with small and big companies in commercial and domestic projects ,shop fittings,refurbish and new build. We are Undertaking any carpentry jobs .
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Latest review:
Joinery & Cabinet Making- 7 May 2024
Ciprian Carpentry did a fantastic job for us.He made our dream built in wardrobe and has been very patience with our requests and amendments. He gave us a lot of ideas how to maximise the space. I would 100% recommend him. He is very humble. Thank you. From MK17 ( Tay)
JDL Construction
Rating: 5 out of 5
Extension Builder in Harpenden
JDL Construction Limited are a Hertfordshire based building company offering both domestic and commercial services. We specialise in all aspects of construction including Home Extensions, New Builds, Garage Conversions as well as specialist Brickwork Contractors. Our company is fully insured and our tradesman are all fully qualified. JDL are members of many trade associations including Constructionline, CHAS, Federation of Master Builders and Federation of Small Businesses.
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Latest review:
The project was to construct a 15m2 extension to our rear lounge on the ground floor plus a 4m2 extension to the bathroom on the first floor. This involved foundations, walls and roof tiling in addition to the installation of a 5m long RSJ to support the first floor bedroom. Jamie was selected because of his recent training and apparent enthusiasm. He planned and carried out the work very well. Problems when encountered were discussed and resolved with professionalism and enthusiasm. The resulting work has been completed to a high standard and I am well satisfied with the result. The time taken was as planned, he worked on a daily rate which was to my budget. Jamie' strengths are a good basic knowledge of the building regulations, good communication skills with other workers, suppliers and inspectors and excellent basic brick laying skills with a eye for dimensional regularity and excellent final appearance. I would strongly recommend this young and enthusiastic tradesman for any similar project work involving use of his excellent bricklaying skills.
Regal Contractors Ltd
Rating: 5 out of 5
Extension Builder in Harpenden
Regal Contractors Ltd is a friendly & reliable Bedfordshire based company with over 20 years experience in the trade. We offer a wide range of services such as Carpentry (1st & 2nd fix), Loft Conversions, Extensions, Refurbishments, kitchens & bathrooms, media walls, garden rooms & decking.. We pride ourselves on our finish and have a high attention to detail. Just to add, we are brand new to my builder hence why we do don’t currently have any reviews. Many thanks Ryan
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Latest review:
Completed a ground floor side return and rear extension to our kitchen. Very professional and clear communicator all the way through the job. Tidy worker with a high standard of finish.
Jay T building
Rating: 5 out of 5
Extension Builder in Harpenden
I have 10 years experience with building work.
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Latest review:
Bathroom Fitting- 5 Aug 2026
Done a great job, clean and tidy workmanship, polite and friendly
Ovi
Rating: 5 out of 5
Extension Builder in Harpenden
Ovi the builder offers a comprehensive service specialising in loft conversions, extensions and refurbishments. We hold over 20 years experience within the construction industry, providing a high standard of work focusing on quality and ensuring a job well done.
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Latest review:
Restoration & Refurbishment- 1 Aug 2026
Thank you for everything, very professional and a solid team. Everything done high quality and pretty fast for fresh kitchen & ensuite. I have put pictures of before and after!
PWF CONSTRUCTION LTD
Rating: 5 out of 5
Extension Builder in Harpenden
FRIENDLY, POLITE AND CONSCIENTIOUS
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Latest review:
PWF construction were never hired to complete my job and the fact that I am now writing a review is an error on my part. Paul Fisher was however very helpful when he provided a quotation for my job and his communication was great.
thegreenorigin ltd
Rating: 5 out of 5
Extension Builder in Harpenden
The Green Origin is a building specialist with a difference, our name reflects our approach to the care of the environment and the value we attach to our clients needs. We apply the highest standards of craftsmanship to deliver our clients first class service and superior finish.
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Latest review:
Thegreenorigin Ltd worked on a full refurb of our office wash rooms in August last year. We had moved into new offices that had been completely renovated with the exception of the bathrooms, which were 20 years out of date! As a busy recruitment specialist in central London, we have an enormous amount of footfall through our offices on a daily basis, including those through our bathrooms, so the quality and resilience of the work was imperative. Thegreenorigin took time to understand our business priorities and worked throughout the night to allow us to maintain use of the bathrooms while they were doing the job. It meant we could still provide facilities to our clients (and staff) whilst they were being refurbished. This was a very important factor for us. In addition to this, they worked around issues which came to light regarding the building we worked in and old pipe work that was still in place, causing sewage issues and completed the project within the timeline we agreed. I would have no hesitation recommending them to other businesses or personal customers.
ATW Construction Services
Rating: 5 out of 5
Extension Builder in Harpenden
I am a local builder with over 20 years' experience. I am a time served Advanced City & Guilds Bricklayer. I am hands on with a small team that work alongside me. I am reliable and offer a professional service. Most of my customers are repeat business. Member of the Federation of Master Builders.
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Latest review:
Gas Work- 4 Dec 2018
A really neat and professional finish. Lots of good advice given. Would recommend to anyone.
S D Wager Brickwork and Building Services
Rating: 5 out of 5
Extension Builder in Harpenden
S.D. Wager are an experienced building contractor trading for over 30 years we always work to a high quality standard and aim to complete jobs on time and on budget. We are a family run business and offer a friendly and personal service to to all our customers. We are also fully insured
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Latest review:
Bricklaying- 27 Mar 2026
Great job from start to finish.
A W Building Contractors Ltd
Rating: 5 out of 5
Extension Builder in Harpenden
A W Construction Ltd., provide a full range of building services. Bricklaying Extensions Demolition Patios & Driveways Groundwork Garage conversions Refurbishments Domestic & commercial Free of charge quotations & advice, no extra hidden pricing. No job too big or small! Family run business.
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Latest review:
Garage conversion with extra storage. Completed plumbing, electrics, insulation, plastering, painting. New window supplied & fitted. Recommendation of great floor tilers. All completed on the agreed time schedule and budget.
PDK Construction
Rating: 5 out of 5
Extension Builder in Harpenden
PDK Construction. With over 40 years experience, We provide a full building service from start to finish and all work is undertaken by our skilled, reliable and friendly team. We specialise in Large Single and Double Story Extensions which often include the design and installation of kitchens and bathrooms. Also Renovations and refurbishments, both domestic and Commercial
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Latest review:
Extensions- 6 Mar 2023
So glad we found Paul to conduct our house extension. Whilst work is still ongoing I have found Paul to be polite, considerate, and very experienced in the building trade, a big plus point is his costs and reliability. His knowledge is invaluable and has given us lots of ideas to consider during the build. Currently the team of builders conducting works to date have been lovely to be around and brickwork is amazing! Although still some way to go, looking forward to the next few months and the finished job.
Rosewood Contracting Ltd
Rating: 5 out of 5
Extension Builder in Harpenden
At Rosewood Contracting, we specialise in high end residential and listed buildings. Our team is dedicated to ensuring the successful completion of every project we undertake, with a focus on quality craftsmanship, attention to detail, and timely delivery.
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Latest review:
High-quality work on site, no issues with building control, all signed off straight away with no remedials. Would use again on future projects.