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  1. Post a job

    Post a job

    Tell us about your job, and we'll alert suitable extension builders in Watford. It’s simple and free.

  2. Hire a tradesperson

    Tradespeople respond

    Once your job is posted, you'll get responses from interested extension builders through the website.

  3. Leave feedback

    Review and choose

    Browse profiles, work history, and feedback, then choose who you wish to share your details with.

  • 360Build Solutions Ltd

    Extension Builder working in Watford
    Trade Member since 2010

    360Build Solutions Ltd - specialised in Extensions (single or double storey), Conversions - Loft, Garage, Full Refurbishments including Kitchens, Bathrooms, Home Cinema and complete New Builds - Home Office, Gym. We deliver top quality of work and we always look at many read more

    Latest Conversions - General feedback review:

    Removal.of load bearing wall and building stud wall

    Marius was FANTASTIC and did a great job. We would hire him again - he renovated the entire house to a great standard including eletric works, installation of bathrooms and dealing with Building Control

    By liagrant on

  • A. D. Builders

    Extension Builder working in Watford
    Trade Member since 2017

    Hi , I’m Aaron Davis of AD builders, I Have been in the building trade for 20 years. Orginally worked for my father in a family run business. I take a lot of pride in my work , references are available at any time. I'm a bricklayer by trade and ground worker. I have built read more

    Latest Groundwork & Foundations feedback review:

    Foundations for 9M x 9M house.

    The job was to put in foundations, build up to damp course and install a beam and block floor for a new build three bed house. Building control asked for the foundations to be over two meters deep. I listed the job on My builder and Aaron...

    By david3280 on

  • RBC Building Services

    Extension Builder working in Watford
    Trade Member since 2015

    My name is Chris Charnock. I run a team that undertakes all types of extensions, loft conversions and new builds. We are a highly efficient and professional firm that strives for perfection and customer satisfaction. We are highly recommended and are members of the read more

    Latest Extensions feedback review:

    Extension

    Very Happy with Chris and team, they completed an extensive extension on our house in good time even with the material shortage crisis and was always amenable to a demanding client :)

    By shaun61456 on

  • Vb builders ltd

    Extension Builder working in Watford
    Trade Member since 2019

    I have over 20 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 read more

    Latest Extensions feedback review:

    Double storey side extension - Brentford Ealing border

    Vedat and his team were reliable, hard working, personable, respectful of our family space (whilst we continued to live in the property throughout the build) and very knowledgeable. Conducting our double storey extension work during a...

    By sara76312 on

  • n-vico

    Extension Builder working in Watford
    Trade Member since 2012

    Marius, as owner of N-Vico LTD has over 14 years experience in the construction industry starting out as a carpenter. Now we are a highly skilled team of builders that provides a complete residential refurbishment service read more

    Latest Extensions feedback review:

    Single Story Rear Extension

    COWBOYS! Absolute Nightmare! Marius left the job incomplete, after repeatedly demanding more money before completion! Not to be trusted! Workmanship wasn't as good as he would lead you to believe, I have pics & videos of:...

    By emmanuel_a2k on

  • Vasile Building Services

    Extension Builder working in Watford
    Trade Member since 2014

    I'm a 46 years old tradesmen from Watford. I am a hard worker, sociable, good organiser, honest. I like you to be happy with my work and I give the same whatever the contract is worth. I always respect your wishes and work with you to achieve your results. All my work is read more

    Latest Groundwork & Foundations feedback review:

    Joint hole for electrical mains 1m x 1.2m x 0.6m

    Good honest workers. Great communication, polite and diligent. Highly recommend

    By jlpeacock on

  • HomeDeco

    Extension Builder working in Watford
    Trade Member since 2011

    Here at ”HomeDeco” we believe in customer satisfaction in the finished product and we are committed to giving the best results every time. Our motto: happy clients are returning clients :) read more

    Latest Extensions feedback review:

    Rear and Side Extension with Full house Refurbishment

    We had the best possible experience with homedeco. Gina and Jon carried out a side return extension with multiple structural wall removal, porch , decking and entire house refurbishment to the highest finishing possible. They have a strong...

    By akuma on

  • Davies Construction

    Extension Builder working in Watford
    Trade Member since 2016

    we are a genral building company specialising in home extensions brick work and ground work i have been established for 15 years i am also a member of the trust mark we are an old school type of firm with good quality tradesmen we turn up on time and keep a clean and tidy read more

    Latest Extensions feedback review:

    Extension

    Tony & Nicola Nugent 7 Bramley Gardens South Oxhey Hertfordshire WD196YD 07892 683 819 Whilst requesting quotations from contractors we came across Martin davies and requested if he could visit and quote us for a single floor ...

    By anon-231025010003701205 on

  • PJS Builders

    Extension Builder working in Watford
    Trade Member since 2018

    30 years experience Extensions Loft conversions Refurbishments Maintenance Decorating Fully insured Friendly service read more

    Latest Bricklaying feedback review:

    New front gate pillar

    Paul turned up on time both to review the job and on the day we agreed to get the work done. He's friendly, reliable and did a great job of the brickwork. Will definitely use him again for similar work.

    By rosemary_911 on

  • Ed Barkas

    Extension Builder working in Watford
    Trade Member since 2022

    Willing to take on any type of building work big or small. Normally I undertake extensions and loft conversions, but have also completed landscaping jobs and general refurbishments. I also have a lot of experience in groundworks. What makes me stand out is my attention to read more

    Latest Restoration & Refurbishment feedback review:

    Insulate garage and a few additional handyman jobs

    Ed and his team took on the garage refurb, along with some other small jobs that another builder had left me with without completing Ed was professional, calm and a joy to work with very accommodating always made time for you came up with...

    By nadeem37915 on

  • JMD NEXT LEVEL

    Extension Builder working in Watford
    Trade Member since 2019

    We believe that any high quality service involves viewing the property personally and dealing with our customers in person. This makes it possible to create great results and develops a mutual understanding of expectations. That allows us to deliver our customers with a read more

    Latest Extensions feedback review:

    Kitchen extension

    Excellent job of building our extension. Builders were reliable, tidy, pleasant and totally trustworthy. If I have more building work, I will certainly use them again and I have and will recommend them to friends.

    By sjf_55 on

  • Andrew henderson

    Extension Builder working in Watford
    Trade Member since 2014

    I specialise in Carpentry & Joinery but I also have skills in all sectors of general building, from new builds to extensions and all internal and external building as well as ground works including bricklaying, painting & decorating, tiling and roofing. Contact me regarding read more

    Latest New Builds client reference:

    Andrew is a great guy and was recommended to me through a mutual friend. I needed the tiling redoing in my bathroom so I gave him a call and asked him to come over to give me a quote. The price was very competitive so I asked him if he...

    Reference taken by MyBuilder on

  • Flynn Construction ltd

    Extension Builder working in Watford
    Trade Member since 2008

    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. read more

    Latest Extensions feedback review:

    Rear single story extension

    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.

    By emma1501 on

  • Total Construct II

    Extension Builder working in Watford
    Trade Member since 2014

    I'm a professional builder with more than 20years experience.My goal is to keep my customers satisfied by producing high quality work.I'm dedicated to complete each job to the highest standard leaving customers happy.Do not hesitate to contact me, all quotations and further read more

    Latest Extensions feedback review:

    Side infill extension

    Joseph and his team were extremley professional and friendly. They skillfully built our extenstion in reasonable time. When we did encounter issues Joseph, my wife and I found a solution. We are thrilled with the transformation the...

    By markj_72 on

  • 5S Building Solutions Ltd.

    Extension Builder working in Watford
    Trade Member since 2020

    ⭐️⭐️⭐️⭐️⭐️ My name is Albi. I’m over 18 years experienced builder, for loft coversion, extensions and general buildings. If are you looking to extend or refurbish your bathroom,kitchen,living room or any room, I can help you to achieve the exact read more

    Latest Extensions feedback review:

    Side extension

    He is friendly and give good prices at the beginning but he asks for more money within the first week of the project. His team is hard working but it requires supervision as their work doesn’t meet the building regulations. They made many...

    By ellie27297 on

  • Roberts Plastering Services

    Extension Builder working in Watford
    Trade Member since 2016

    Hello everyone! My name is Robert, of Roberts Plastering Services LTD. We started by undertaking plastering, rendering and screeding works. Then, as the team increased, we undertake buliding projects as extensions and loft conversions. We focus on the high quality of the read more

    Latest Plastering feedback review:

    Plastering landing and stairways

    Rob was great, communication spot on and carried out the work with great care and quality. Will use Rob again.

    By luisgunn30 on

  • Nabstar Construction

    Extension Builder working in Watford
    Trade Member since 2022

    We are a friendly, reliable and honest team who offer a number of different services. We have been running for over 7 years and have our own public liability insurance. We specialise in full house renovations and extensions. Jobs we also offer are roofing, plastering, read more

    Latest Extensions feedback review:

    Lean to

    I would recommend to everyone reasonable quote and finished work on agreed time, very quick work and tidy everything when finished work, definitely I will hire him again.

    By mehmood84359 on

  • Artistic Design & Construction LTD

    Extension Builder working in Watford
    Trade Member since 2017

    Hi, we are a construction company with many years of experiance. We are a team of professionals, very reliable and delivering projects in good timeframes . We build new houses, house extensions, loft conversions, refurbishments, driveways and patios, landscaping and garden read more

    Latest Extensions feedback review:

    Back extension

    Overall, we are very pleased with the work. John and his team were professional and courteous throughout. With any large project you always expect a few bumps but thanks to John we managed to overcome them all.

    By zeeshan_maqbool on

  • UNICS CONSTRUCTION LTD

    Extension Builder working in Watford
    Trade Member since 2017

    Unicsconstruction its domestic building company since 2007, includes new buildings, extension one/two storey, loft conversion and full landscaping. Unicsconstruction- WHERE REPUTATION MATTERS…. PLEASE NOTE: Every potential client as you may be aware that my builder read more

    Latest Landscaping feedback review:

    Urgent Garden Landscaping required

    Constantin and his team did a brilliant job in our garden and quickly too. Highly recommended.

    By meena_39 on

  • SJC Construction & Interiors

    Extension Builder working in Watford
    Trade Member since 2021

    SJC Construction & Interiors, Is a family ran construction company based in Rickmansworth, Herefordshire. we pride ourselves on top quality work , completed by our expert tradesman, to specification and on budget time and time again. read more

    Latest Bricklaying feedback review:

    Small brick pillar repair and finish

    Sean got in touch very quickly and was very polite and professional. There was no messing around when he came to do a quote for us and the clear quote was with us shortly after. Really happy with the work and he was flexible and worked...

    By gemcat1981 on

What can extension builders do?

MyBuilder is the simplest way to find a reviewed and vetted extension in your local area. We can connect you with local extension builders near you, so you can choose the ideal tradesperson for your project with confidence.

Whether your plans are big or small, we can help you find a skilled extension builder to support you with your job. Your contact details are only shared with tradespeople you want to speak to, so you can check out their credentials, read honest customer reviews and get free quotes to compare.

There are lots of jobs that extension builders can help with, including:

  • Extending your home with an extra room
  • Two+ storey extensions
  • Adding partition walls to create more rooms
  • Building annexes or external structures

Top Extension Builder Reviews

99%

Extension Builders working near Watford in Hertfordshire have an average review score of 99% positive based on 3,709 homeowner reviews.

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