How it works

  1. Post a job

    Post a job

    Tell us about your job, and we'll alert suitable extension builders in Hornsey. 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.

  • Extension Kings Ltd

    Extension Builder working in Hornsey
    Trade Member since 2017

    I've been working in building trade for over 20 years , I can undertake any job small and big from foundations to the roof and anything between. I can provide any references and I have insurance of £5 million. Me and my team take pride at what we do and we do it first read more

    Latest Conversions - General feedback review:

    Brick wall alterations - work needed to start ASAP

    Highly recommend! Really pleased with the work. Alban was always responsive, helpful and kept his promises. Will definitely use again.

    By bella_clo on

  • DPS Construction

    Extension Builder working in Hornsey
    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:

    Rear extension

    We can not praise DPS enough. We interviewed 5 building contractors and we had a good feeling about DPS. Ralph was able to talk through the process in great detail and gave us an in-depth breakdown of the quote to see where exactly the our...

    By ivan228 on

  • Bluelime Design and Build

    Extension Builder working in Hornsey
    Trade Member since 2012

    Bluelime is a one stop shop for all your planning, interior design , structural engineering and construction needs. With over 8 years worth of happy customers we pride ourselves with our honest and inventive solutions. Free initial consultations and proven track record of read more

    Latest Architecture feedback review:

    Extension & Refurb - Architectural & Structural Drawing

    Bluelime Architects helped us design our new house - from helping us maximise the utility of the space available to us, to designing the side and rear extensions, including detailed structural drawings and engineers calculations. Both Alton...

    By chris_morgan_79 on

  • SSS Brothers Limited

    Extension Builder working in Hornsey
    Trade Member since 2017

    At SSS Brothers we value our customers and work very hard to maintain their trust.With 15 years of experience,You can be assured that we will always provide quality workmanship, professional,courteous and timely service. Our prices are competitive, and our work read more

    Latest Extensions feedback review:

    Bathroom room extension

    Honestly I cannot recommend this company enough. Honestly, hard working and reasonably priced. They've really looked after my inlaws through the entire process.

    By mattl_19 on

  • Azure Design Ltd

    Extension Builder working in Hornsey
    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:

    Single storey extension plus porch

    Gaz and his team were excellent throughout this project. He was happy to be flexible and discuss alternative options. The work was done to a high standard and I am satisfied with the work. I would recommend Gaz and his team for any future...

    By larry_48 on

  • PAL LEE GROUP LTD

    Extension Builder working in Hornsey
    Trade Member since 2018

    PAL LEE GROUP LTD is a London based construction company carrying out its services over the capital. We are a skilful team of builders with a number of successfully completed projects in property extensions and full house refurbishments. Our company provides complete project read more

    Latest Extensions feedback review:

    Kitchen extension, downstairs refurbishment

    Pal Lee Group has done an excellent job for us and I cannot thank them enough for not only focusing on getting the job done but they did it to the highest of standards. We can finally live in our dream home knowing that everything is done...

    By tamas44054 on

  • REA Construction LTD

    Extension Builder working in Hornsey
    Trade Member since 2013

    The company’s success is built on the strong belief of quality work, attention to detail and on-time completion. Rea Construction Ltd has an in house team of builders, architects, and interior designers with all the relevant skills and qualifications which enable us to read more

    Latest Extensions feedback review:

    6m x 4.5m Rear extension

    REA Construction were exceptional from start to finish. They met budget and quality requirements without a problem and delivered 4 weeks earlier than quoted. I would strongly recommend REA construction to anyone who is looking for a...

    By sam_249q on

  • MYCO Contractors Limited

    Extension Builder working in Hornsey
    Trade Member since 2019

    I am an experienced and fully insured builder. On average I and my team build and renovate 5 extensions per year. Our current or old clients are always ready to share positive feedback about our work. We work off the ready plans which are usually prepared by the clients read more

    Latest Extensions feedback review:

    Kitchen extension

    On a cold November evening, Tony and his team turned up to provide a quote and within a week this was received. The quoted price came in the middle of the pile, which was a good start and aligned closely to the ballpark figure I'd received...

    By shappir on

  • CIF Builders

    Extension Builder working in Hornsey
    Trade Member since 2015

    We are family run business and have been in the trade since 2001. Our professional team will always give the best they can to achieve optimal results and most important for us are the finishing details and customer satisfaction. We can provide a range of different services read more

    Latest Extensions feedback review:

    Extension

    I contacted John for a quote he came on the day as he promised, he gave me a quote which was reasonable, he started when he said he would, he came very proffessional, he really knows how to manage clients expectations and he was excellent...

    By asab1982 on

  • Assured Builders London

    Extension Builder working in Hornsey
    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:

    Ground floor rear and side extension

    We worked with Assured Builders London on the renovation and extension of a ground floor flat in North London. Lee, Nikki and their team are extremely friendly, very experienced, honest and hardworking. The project was completed on time and...

    By rabble_place_ltd on

  • Glorum

    Extension Builder working in Hornsey
    Trade Member since 2017

    GLORUM Limited is a London-based construction company with 10+ years of building experience in domestic and commercial projects. GLORUM Ltd is your one-stop construction company made up of highly qualified and skilled tradespeople, designers and engineers that can read more

    Latest Extensions feedback review:

    Buildings extension - Permission granted

    Glorum has been extremely professional and hard working. They fulfilled the deadlines given. They have good team of all trades. Their admin is strong as well. They give attention to detail and come up with new ideas and technology. Great...

    By user_der on

  • GS GEO LIMITED

    Extension Builder working in Hornsey
    Trade Member since 2016

    Extention ,loft, House refurbishment, Bathroom refurbishment, decorating, wallpapering, fix coving, Tiling and laminate, service. available 7 days a week . read more

    Latest Extensions feedback review:

    Kitchen extension with island, utility room and toilet

    We completed our kitchen extension and garden room in December 2021 with Giorgi and his workmen. His workmen were very friendly, helpful, hardworking, punctual and nothing was too much to ask of them. Overall the work was good.

    By tdd2801 on

  • ScutariConstruction

    Extension Builder working in Hornsey
    Trade Member since 2018

    Scutari Construction is a limited company based in London. We are a very reliable and professional team of tradesmen with over 10 years of experience on the building industry, committed to deliver the highest levels of quality and service to our clients. read more

    Latest Extensions feedback review:

    1st floor extension front and back.

    Mel and team completely transformed our house in a very timely and professional manner. I honestly cannot say enough good things about him. The team works really hard and their model provides the fastest, highest quality construction at a...

    By also57452 on

  • Reian construction ltd

    Extension Builder working in Hornsey
    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 Extensions feedback review:

    Extension

    Besim and his team were great From start to finish They built my kitchen extensions and other decorations jobs in my house I am really happy with their work and I am happy to recommend him my friends and family members. Thank you...

    By er_electrical_services on

  • PML Architecture Ltd

    Extension Builder working in Hornsey
    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

  • Has Constructions Ltd

    Extension Builder working in Hornsey
    Trade Member since 2020

    Has Constructions 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 read more

    Latest Conversions - General feedback review:

    Bedroom refurbishment: flooring/wall breakdown/lights

    I hired Hassan and Muhamet for a decorative job, mostly replacing floor carpet to laminate, installing new radiators, breaking down a wall and patching up ceiling with plaster.. nothing crazy compared to what they are capable of (building...

    By jasmineg on

  • Woodhouse Builders Ltd

    Extension Builder working in Hornsey
    Trade Member since 2014

    Welcome to Woodhouse Builders Ltd, we cover all aspects of property maintenance and no job is too small or big for us. We employee a reliable , trustworthy and hard working staff.Our success is built on providing the best services and ensuring that all our customers are read more

    Latest Restoration & Refurbishment feedback review:

    Kitchen damp and mould, bedroom cracks

    Damp & mould in kitchen. I'm not a builder & was looking for advice how to fix issues. Agreed work after taking his advice, noting that air vents planned may not resolve condensation. Started 23/02, drilled 2 holes in wall for vents,...

    By helena77742 on

  • O.L.T.O CONSTRUCTION Ltd

    Extension Builder working in Hornsey
    Trade Member since 2021

    we are able to undertake any work that has to do with the interior and exterior of your home. Responsibly! read more

    Latest Restoration & Refurbishment feedback review:

    Kitchen fitting/removal, kitchen/garden stone layingetc

    great job! nice chaps work hard

    By danny71824 on

  • AMG LONDON

    Extension Builder working in Hornsey
    Trade Member since 2014

    AMG places great emphasis on the importance of up to date methods of design and construction. As a key player at the forefront within the market place we specialize in building Extensions, Loft conversions, Drylining, ceilings, painting and decorating to complete internal read more

    Latest Extensions client reference:

    Stefan did an extension for my flat from the installation of structural steel, to the roof, and demolition. To building the shell and all cosmetic work inside. I am very happy with the work. Time keeping was good, pricing was good he was...

    Reference taken by MyBuilder on

  • Horsley Construction ltd.

    Extension Builder working in Hornsey
    Trade Member since 2023

    We are a small company based in north London specialising in extensions, loft conversions and garden rooms. I have worked in this sector for the last fifteen years and my company has been trading since 2016. We take on a small number of jobs but take them very seriously to read more

    Latest Extensions client reference:

    We have known and worked with Joe for the last 6 years. He has recently built a ground floor kitchen extension and created a utility area and downstairs cloakroom for us. His ability to communicate each phase of the build’s requirements...

    Reference taken by MyBuilder 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 Hornsey in North London have an average review score of 98% positive based on 3,500 homeowner reviews.

Trusted by experts

Mumsnet rated 2019

Don’t just take our word for it, homeowners love MyBuilder too. We’re proud to be rated by Mumsnet.

Ask an Extension Builder

Our vetted professionals answer your home improvement questions

See more questions