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Extension Builders

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

  • BUILD ON TIME LTD

    Extension Builder working in Mill Hill
    Trade Member since 2011

    BuildOnTime LTD is a family business and one of the fastest growing building companies in London.We have over 20 years of experience in all types of building and construction works.Our team is structured from highly qualified, friendly and ambitious workers.We are your read more

    Latest Extensions feedback review:

    Single Storey rear extension

    First thing first, if your looking for big projects such as extensions and full house renovations then look no further - Paul is the right guy for the job. We have really liked Paul's approach right from the beginning i.e. visiting our...

    By harig on

  • DPS Construction

    Extension Builder working in Mill Hill
    Trade Member since 2014

    We build, refurbish and extend buildings. Our strong regional presence allows us to foster trusting and beneficial working partnership with our customers, consultants, supply chain and local communities. read more

    Latest Extensions feedback review:

    Side Return/Extension

    DPS completed a single story side return extension which we were really happy with. Ralf spent time with us during the beginning of the project to plan out timescales, price and ideas on finishing. The bit we most enjoyed with DPS though...

    By samj_79 on

  • B&G Brothers Construction

    Extension Builder working in Mill Hill
    Trade Member since 2017

    WELCOME TO B&G BROTHERS CONSTRUCTION LTD B&G Brothers Construction Ltd is a well-established building company based in Stanmore North West London. We carry out most types of building works, including: House Extensions Property Refurbishments Loft Conversions Ground read more

    Latest Extensions feedback review:

    3no ground floor extensions

    All work done to a great standard. Andrei and his team were polite, courteous and helpfully answered our questions during the build. I would definitely recommend them.

    By asha72743 on

  • QUBE DESIGN & BUILD LTD.

    Extension Builder working in Mill Hill
    Trade Member since 2013

    Qube Design&Build is an experienced Design & Construction company specializes in residential Extensions, Loft Conversions, Full refurbishments, New Homes and Contemporary Gardens.We undertake all design, planning & building control submissions, structural calculations and read more

    Latest Extensions feedback review:

    Rough quote for work on house purchase, happy to pay

    I used Sam to come to view a house we are considering purchasing, with view to getting his opinion on potential extensions and costs etc. I was extremely happy with his advice. Before coming on site he had done his homework in terms of past...

    By gm100_78 on

  • Reian construction ltd

    Extension Builder working in Mill Hill
    Trade Member since 2018

    I have been in construction industry for at least 17 years in London mostly round Hampstead and west London, west end , Ground work drainage, payment ,landscaping , extension, carpentery, fencing,roofing ,bricklaying, read more

    Latest Groundwork & Foundations feedback review:

    Foundation/underpinning for front basement extension

    Besim and his team did a fantastic job excavating my basement coal shoot and converting this into my daughters bedroom. I cannot praise this company enough - always punctual, professional, extremely reliable and could not be more helpful or...

    By chris_88_65 on

  • Assured Builders London

    Extension Builder working in Mill Hill
    Trade Member since 2017

    We have been in the building trade for 25 years, we are a professional building company specialising in New Builds, Extensions and Loft conversions & renovations in London & Hertfordshire. The majority of our work is through personal recommendations. We are always happy to read more

    Latest Extensions feedback review:

    Rear extension and loft conversion

    I will rate Lee and his team 9.5/10. In summary, highly recommended to anyone (as a matter of fact he has already done another job down the street). Lee is very fast in delivering the project. All other builders told me my project needs 6...

    By georgeliu on

  • M & G Home Improvement

    Extension Builder working in Mill Hill
    Trade Member since 2020

    With over 12 years of experience in the construction industry and an admirable track record, M&G Home Improvement can have confidence in providing remarkable levels of competence and expertise from new-builds to all refurbishment projects. We are very well recognised within read more

    Latest Extensions feedback review:

    Single Storey Kitchen Extension.

    We needed a kitchen extension, and after getting 10 quotes from local builders, M & G were extremely competitive on price. The whole process was made simple, mainly due to the knowledge and communication from Miri and his team. Before I...

    By neil_411 on

  • CONSTA Construction Limited

    Extension Builder working in Mill Hill
    Trade Member since 2017

    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 read more

    Latest Hard Flooring feedback review:

    To fit Engineered wood floor

    Excellent, worked quickly, cleanly and floor looks fantastic. Good communication throughout.

    By adamcass on

  • Azure Design Ltd

    Extension Builder working in Mill Hill
    Trade Member since 2019

    Hi 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

  • Zenstruction

    Extension Builder working in Mill Hill
    Trade Member since 2017

    Established builder with excellent experience since 2005 and have great knowledge in the trade. We are known for excellent work standards, health and safety and high quality projects within budget and timeframe for completion. read more

    Latest Guttering feedback review:

    Stop gutter from overflowing

    Zen arrived on time, quickly assessed my gutter problem and advised me on the best solution, which was to clear out huge amounts of moss and to slightly raise a small portion of the guttering. Zen carried out the work the same day, took...

    By pinner_peter on

  • Home Decorating

    Extension Builder working in Mill Hill
    Trade Member since 2011

    Here at ”Home Decorating” 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 Restoration & Refurbishment feedback review:

    New bathroom fitting Edgware

    Gina has been an absolute delight, very accommodating and has a great way of understanding what her clients desires are and Explaining the process behind the vision and how to get there. I highly recommend Gina as her personable manner is...

    By fee181 on

  • R.A.S. Construction And Design Ltd

    Extension Builder working in Mill Hill
    Trade Member since 2015

    R.A.S Construction and Design Ltd is a well established company specialising in all aspects of construction and hard landscaping work. Our work is carried out by our own employed teams and we offer free advice and quotations. All our work is guaranteed and fully insured read more

    Latest Extensions feedback review:

    Renovation and Extension of 1 bedroom Victorian flat

    We had a one bedroom lower ground floor garden flat and did a side return and extension into the garden. The flat is in West Kensington area. We also did a full internal refurbishment and moved just about every wall, moved boiler, new...

    By westken15682 on

  • MarioM Construction

    Extension Builder working in Mill Hill
    Trade Member since 2016

    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 read more

    Latest Extensions feedback review:

    Rear extension

    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...

    By lgurung on

  • AH Builder

    Extension Builder working in Mill Hill
    Trade Member since 2019

    AH Builder Ltd specialise in all types of building we are professional and very determined to ensure our clients expectations are met. we have worked on many different building projects for more than 10 years experience. read more

    Latest Extensions feedback review:

    Demolish garage and shed. Build new garage.

    Alfred and his team did a great job and have built a lovely new garage/summer house for us to use. Really lovely quality and finish. The team worked really hard and there were absolutely no issues. Work completed within the time frame given...

    By gabyj on

  • Alb Homes Ltd

    Extension Builder working in Mill Hill
    Trade Member since 2010

    Alb Homes Ltd is a family-run business that’s evolved from humble beginnings. With over 17 years of experience and 80+ projects completed, we have honed our skills to a level recognised by the Federation of Master Builders. We are always on hand to answer any questions and read more

    Latest Bathroom Fitting feedback review:

    Fit an extractor fan connected to the light switch

    Tim was great, he came in and got the job done professionally and efficiently, will definately hire again. Thanks

    By anon-180823211503112579 on

  • SpectRoom Property Maintenance LTD

    Extension Builder working in Mill Hill
    Trade Member since 2014

    At SpectRoom Ltd we pride ourselves for being prompt, working to budget and on time and are very clean. We will fully complete any project including all decorating flooring tilling construction and all other property maintenance jobs to customer requirements and for that we read more

    Latest Extensions feedback review:

    Rebuild garage

    Jacob was very accommodating and flexible. His team were great and he completed the work nicely. There was some splatter from the cementing on to my neighbour's wall. He tried to clean it off but it wouldn't all come off. Therefore, he...

    By jagku_79 on

  • Enea Group LTD

    Extension Builder working in Mill Hill
    Trade Member since 2018

    House Extensions, Refurbishments, Kitchen & Bathrooms, Painting & Decorations, Electric & Plumbing. read more

    Latest Handyman feedback review:

    Warped door needs fixing

    Naim did the job immediately on the same day that I advertised it! His price was fair and fixed which suited me. I was not present when he worked so he was extra cautious and sent me pictures and a video of the finished work.very helpful!

    By sammy_253 on

  • Flynn Construction ltd

    Extension Builder working in Mill Hill
    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 client reference:

    Gavin and his team completed a single storey extension with Bi-folding doors. Gavin was a pleasure to work with. He had a great understanding of what we wanted and was friendly, helpful and flexible. He was always contactable if we had any...

    Reference taken by MyBuilder on

  • PML Architecture Ltd

    Extension Builder working in Mill Hill
    Trade Member since 2014

    We are RIBA registered architects with a wide range of experience of over 25 years within architecture, design and construction. We are experienced at new builds, full refurbishments, extensions and conversions, and have completed numerous residential and commercial projects read more

    Latest Architecture feedback review:

    Planning application for new dwelling

    Phil is currently helping us with the planning application process to build a new property. This includes liaising with the council and other consultants on our behalf. Phil really knows his stuff, is easy to work with, and deals with...

    By sammy_75 on

  • Fitzgerald Construction

    Extension Builder working in Mill Hill
    Trade Member since 2017

    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). read more

    Latest Bricklaying feedback review:

    Long Garden Wall

    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...

    By brianj_38 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

98%

Extension Builders working near Mill Hill in North London have an average review score of 98% positive based on 3,110 homeowner reviews.

Trusted by experts

Mumsnet rated 2019

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