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  1. Post a job

    Post a job

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

  • 30 Day Extensions Ltd

    Extension Builder working in South London
    Trade Member since 2016

    COMPLETED 96 projects in 2022. •WIMBLEDON, SURBITON SHOPS now open and Streatham soon.•Fantastic reputation, reviews on google and webpage. • Speed, we build shell in 30 days. •priced by a QS and we add 15%. Simple! • FREE planning if you use us. •Highly skilled read more

    Latest Extensions feedback review:

    Rear single storey extension and ground floor refurb

    The guys were great. Peter sits on top but his teams operate really well. Pricing is good, and Susan keeps you informed the whole way through. Strongly recommend

    By sleekmania on

  • iGo Victorian (Go-Gondolier Ltd)

    Extension Builder working in South London
    Trade Member since 2015

    iGo Victorian is part of Go Gondolier Ltd a well-established local company with professional skilled workers covering south London SW/KT/SM postcodes All our work is guaranteed, and we are happy to supply references on request as well as arranging visits to view previous read more

    Latest Roofing (Pitched) feedback review:

    Repair/ replace roof tiles

    Excellent responsiveness, easy to deal with, got the work done quickly and to quote.

    By eoshea on

  • Prestige Building Design Ltd

    Extension Builder working in South London
    Trade Member since 2018

    My name is Warren & has been in the building industry for over 35yrs Began as a carpenter and has developed & moved into all area and aspect of the building industry covering from the least to the greatest, Prestige Building Design Ltd. Are a team of Multi-Skill tradesman, read more

    Latest Extensions feedback review:

    Single storey rear extension in SE27

    Warren and his team have been fantastic to work with over the last 6/7 months. We’ve been very happy with their professionalism and craftsmanship, any issues or problems that occurred were resolved immediately. Warren provided a very...

    By jessica39653 on

  • My Trusted Builder Ltd

    Extension Builder working in South London
    Trade Member since 2013

    When choosing My Trusted Builder know that our key focus is on customer satisfaction. We are here to add value to your project with our team of expert surveying and contracts managers. As a member of The Federation of Master Builders we are recognised for the quality of our read more

    Latest Extensions feedback review:

    Kitchen side-return infill

    Alex and his team have produced a fantastic result, we love our new kitchen and the team worked so hard to deliver the project on time and to the highest standards. Wouldn't hesitate to recommend him and his great team.

    By hw7998 on

  • Quality Polish Builders

    Extension Builder working in South London
    Trade Member since 2015

    We are not the cheapest but we are Master Builders experienced in all aspects of building works including bespoke services. Dedicated team of craftsmen always deliver jobs to the highest standards. We provide full certification for any gas or electrical works. City&Guilds- read more

    Latest Extensions feedback review:

    Single Story exntension

    We initially got Les and the team come to build our single story extension, we then got them to stay and renovate the rest of the house. Everything was done to a very high standard. Les is great communicator during the entirety of the...

    By b-right on

  • FERARU GROUP BUILDERS LTD

    Extension Builder working in South London
    Trade Member since 2017

    I've worked in the UK for 8years now and I do my job to a high standard. read more

    Latest Extensions feedback review:

    Small side in fill extension

    Nick did a great job for my side in fill extension. He did everything from demolition, build and fitting of the flooring, kitchen and bathroom. He gave regular updates and talked through any issues. He dealt with the building inspector. His...

    By andrew26775 on

  • Construction work

    Extension Builder working in South London
    Trade Member since 2020

    Our team is highly professional within the building trade.We have the ability to manage projects of all sizes and complexities. We are very dedicated to each project ensuring that it is completed at the highest standards within the timescale and the budget allocated. We read more

    Latest Conversions - General feedback review:

    Downstairs toilet and new kitchen and new doorway.

    We took a longtime selecting our builder and so glad we chose Nero. Every builder must always think twice before working for architects on their own home! and Nero and his team worked diligently to meet our exacting standards with great...

    By ruth50725 on

  • PAL LEE GROUP LTD

    Extension Builder working in South London
    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:

    House renovation and extension.

    After 6 months of seeing Sergiu's team building my dream house, the job is finally finished. When standing in front of the new house, I can only say that I am so happy with it! Sergiu is a great guy and has a good team of people...

    By zhongfeng190 on

  • Musawir Architecture Limited

    Extension Builder working in South London
    Trade Member since 2020

    We are fully qualified & established architectural design team, with high success rates in obtaining residential and commercial planning approval. A multi-disciplinary consultancy with 10 years combined experience. We provide services for all projects, new builds, read more

    Latest CAD/Drawings feedback review:

    Planning change of use LDC

    I am very impressed and happy with the professional service provided by Musawir Architecture’s Ltd. Mr Abul is very knowledgeable in his field, he answered all my queries and concerns promptly. My drawings were scaled and done to fit the...

    By shelly11923 on

  • Tangible Contractors

    Extension Builder working in South London
    Trade Member since 2016

    Tangible Contractors aims to make renovation and extension projects hassle free and it’s a service that’s being eagerly snapped up for use on both residential and commercial properties alike. Throughout the process, clients of Tangible Contractors receive bi-weekly read more

    Latest Extensions feedback review:

    Kitchen / Dining Room Refurb and Extension

    Lance and his team did a good job remodelling our kitchen and dining room and building an extension at the back. The work was completed on time and the issues that arose were dealt with professionally. There were some additional costs...

    By kay48733 on

  • SIA Design Build

    Extension Builder working in South London
    Trade Member since 2017

    We are a design build firm with over 14 years experience in the construction and architecture sector. We both have masters in architecture and are capable of assisting with all aspects of services. We have worked on over 40 residential projects in London since opening and read more

    Latest Extensions feedback review:

    Terraced House Refurb

    Antonio came on site and helped generate a quote for a property that we were looking to purchase. He was very responsive, attentive and a joy to work with during the 2 weeks we dealt with him. We can’t comment on the carried out works as...

    By emilypun on

  • Glorum

    Extension Builder working in South London
    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

  • Signature 1 Construction Ltd

    Extension Builder working in South London
    Trade Member since 2019

    Signature 1 Construction LTD is a family run business with over 20 years experience in the building industry. We specialise in extensions, loft conversions and full house refurbs. Every job we undertake we take great care of the clients house and are experienced project read more

    Latest Extensions feedback review:

    Ground floor wraparound

    Marin is a great guy. He took time and attention on my ground floor wrap around extension, which also required demolition. He didn’t cut corners and he gave me good advice to help me save money, and also to make sure we had a good finish....

    By scott77920 on

  • A&I Building Services

    Extension Builder working in South London
    Trade Member since 2017

    With over 20 years of experience in the commercial and residential sectors in the UK, A&I BUILDING SERVICES addresses needs within the construction industry, undertaking a wide range of jobs. Types of work we normally undertake range from foundation to final decorations. read more

    Latest Kitchen Fitting feedback review:

    Kitchen Cabinet Fixing

    Nick was very efficient and performed a excellent job in fixing our kitchen cabinets at a reasonable fee. I recommend him highly and will be using him in the future.

    By rina10212 on

  • Paramount Homes London

    Extension Builder working in South London
    Trade Member since 2020

    We are a team of building contractors and developers who have been involved in all aspects of the property sector for over 10+ years. We have a well-established team who are highly experienced and trained; These range from builders and plumbers to NICEIC certified read more

    Latest Extensions feedback review:

    Build garden studio.

    I am really pleased with the work that Indy, Manreet and their team had delivered building a studio in my back garden. The job was not easy but they did it very efficient and made it look unchallenging. They kept me informed of all the...

    By ms63832 on

  • mns building services

    Extension Builder working in South London
    Trade Member since 2018

    we are specialise in kitchen extensions and loft conversions, refurbishments, bathroom and kitchen installations since 2005 (as a solo trader and 2014 as a ltd company) read more

    Latest Extensions feedback review:

    Single Storey Rear Extension + Kitchen&Bathroom Fitting

    We employed Marcin and Lucas for a home renovation that included a 4m single storey rear extension, fitting large skylight and bifolds, warm fibre glass roof, new kitchen, relocating new boiler, installing downstairs lavatory, fitting wood...

    By ollie500 on

  • DPS ltd

    Extension Builder working in South London
    Trade Member since 2015

    Since 2004, DPS Ltd. based in south west London delivers hight standard new build project, house extension, loft conversation to people in Southwest London and Surrey. Our aim has always been to became a company that people associate with quality, professionalism and read more

    Latest Extensions client reference:

    Ground floor back extension, reconfiguration and full redecoration. We chose Dali, firstly through recommendations by neighbours, seeing his work first hand and feeling confident during the consultation phases of his ability to deliver....

    Reference taken by MyBuilder on

  • Molina & Hofmann

    Extension Builder working in South London
    Trade Member since 2015

    We are a small but long-standing team of experienced trades men. We have done extensions and conversions, and all jobs around renovation projects. Our detailed quotes explain the costs. We do not sub-contract jobs and if you have any questions, I will always be your main read more

    Latest Kitchen Fitting feedback review:

    Kitchen refit incl. floor & new boiler

    Patricio & team did a great job on my kitchen - fully refitted the whole thing, replaced the boiler & the result is a great kitchen. Took a little bit longer than anticipated, but ain't that always the way! Would recommend.

    By thespelling on

  • Belhus Construction Ltd

    Extension Builder working in South London
    Trade Member since 2012

    We deliver exceptional finish to all of our jobs. We offer our experience and knowledge to support, guide and help you to make any house a home. read more

    Latest Extensions feedback review:

    Side extension

    Micka is very professional and responsive to all my queries. Work finished to a very good standard.I am happy with my new side extension. I would use Qualityloft again.

    By gracee_51 on

  • Lucas Build London Ltd

    Extension Builder working in South London
    Trade Member since 2023

    Hi. My company exist from 10 years. We are doing house extensions, loft conversions and full refurbishments. I look after every my work, im always being in touch with Clients, and always happy to give advise. Im working together with my builders, that is why work going read more

    Latest Extensions client reference:

    Lukasz and his team built a lower floor kitchen extension and downstairs WC for my wife and I. From start to finish, they were extremely professional and helpful. They were the perfect builders for first time renovators such as ourselves,...

    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

99%

Extension Builders working near South London in London have an average review score of 99% positive based on 3,527 homeowner reviews.

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