How it works

  1. Post a job

    Post a job

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

  • Binstead Carpentry & Building

    Extension Builder working in Southampton
    Trade Member since 2014

    I am small business,which can give competitive prices.I have fully qualified sub-contractors tradesmen and offer a full multi trade service. I have over 25 years experience in the building trade.Our experience and expertise range from hanging doors to big extensions I’m read more

    Latest Extensions feedback review:

    Ground floor rear extension (planning permission ready)

    Jason did a wonderful job creating a beautiful full-width rear extension for us. Whenever we raised issues or questions, he was quick to respond and find solutions. The work was of a high quality and his quote was reasonable. Highly...

    By jennie16908 on

  • Home Building & Property Refurbishments Limited

    Extension Builder working in Southampton
    Trade Member since 2017

    We are a local family run building company covering all aspects of building work throughout the south, specialising in full Refurbishments, extensions, loft and garage conversions . We have noticed how expensive our competitors are when offering replacement UPVC & read more

    Latest Extensions feedback review:

    2 storey extension + Refurb of parts of existing house

    12 MONTH ANNIVERSARY

    By lee77426 on

  • browne brothers and sons

    Extension Builder working in Southampton
    Trade Member since 2009

    We have 40 years experience ,family run business. All trades have the relevant trade certificates ie.. city and guilds and employer and public liability insurance cover for your peace of mind and available when entering a project with us.We provide a full and detailed read more

    Latest Extensions feedback review:

    10x4m Single Storey Extension and GF Re-modelling

    No need to interview any other builders, if Dave shows an interest in your project then simply hire them. Their pricing, all through not the chaepaest, is competitive and reflects the high quality of their workmanship. They were on site...

    By anon-200208001503287786 on

  • Staunch Developments

    Extension Builder working in Southampton
    Trade Member since 2020

    Staunch Developments is a construction company who undertake any building jobs, ranging from ground works, landscaping and brickwork to extensions and complete renovations. We have years of experience and can get the jobs done from start to finish. read more

    Latest Extensions feedback review:

    Small single floor Bungalow extension to first fix.

    Zack and the team were excellent throughout. From the initial contact the quote was received quickly, from that through to the completion of the build I was always impressed and reassured by Zak's attention to planning and satisfaction in...

    By paul70320_66 on

  • T.W. BUILBERS

    Extension Builder working in Southampton
    Trade Member since 2009

    T.W. Builders are a general building company who offer a very professional , reliable and honest service , who ensure that every customer is very happy with our work and committment. All of our work is finished to a very high standard , and we have a wide range of satisfied read more

    Latest Extensions client reference:

    Toby helped to build an extension for me and I'm very happy with the work. He turned up on time, he's very polite and I found him to be very switched on. I've recommended Toby to others already and I would certainly have him back if I...

    Reference taken by MyBuilder on

  • NLB home renovations

    Extension Builder working in Southampton
    Trade Member since 2018

    NLB Home Renovations are part of Loving Homes Group ltd. Specialising in the highest quality; complete home renovations, kitchen and bathroom refurbishments, extensions and loft conversions. From concept to completion, our team will guide you through the step by step read more

    Latest Extensions feedback review:

    Garage conversion and single-storey extension

    Highly recommend. Nick and the guys were fantastic throughout our garage conversion and single storey extension. Communicated every step of the way and even helped out with a few additional jobs in the house

    By frankie16407 on

  • BC Plastering, Renovations & Extensions

    Extension Builder working in Southampton
    Trade Member since 2012

    We have been providing the full-spectrum of interior and exterior plastering and building services to residents of Southampton for many years. With a wealth of experience, we consistently deliver quality workmanship to anyone that puts their faith in our services. read more

    Latest Plastering feedback review:

    Rendering of extension

    Bill quoted for the rendering job but I also had him quote for some internal plastering. He has completed the plastering with the rendering on hold for now. I would highly recommend Bill who provided a detailed quote and when asked to do a...

    By phil_761 on

  • Michele Casamassima

    Extension Builder working in Southampton
    Trade Member since 2023

    Hi, my name is Mike. I've been working as a builder and contractor for over 15 years now. I really enjoy the hands-on work of construction and helping build homes, additions, and renovations for customers. Over the past decade and a half, I've worked on a wide variety of read more

    Latest Extensions client reference:

    We employed Mike and Manuel to do a loft conversion to our semi detached in Henley. The job was completed within timeframes and to a high standard. We had some extra costs not to their faults, as some unforseen circumstances came up...

    Reference taken by MyBuilder on

  • APS Building Ltd

    Extension Builder working in Southampton
    Trade Member since 2018

    At APS Building & Construction we provide a friendly and professional service to all of our customers and our experience has been gained on many successful domestic and commercial project and builds. Covering Hampshire and the UK our company specialises in all building & read more

    Latest Extensions feedback review:

    External Staircase

    Jamie of APS is quick to respond and works to a high standard. Recommended

    By brentss on

  • BCK BUILDERS

    Extension Builder working in Southampton
    Trade Member since 2018

    Professional Builder who strives only for the highest of standards. Work always completed to help the customer achieve their goal. All works undertaken, including: Repairs, Garden Walls, Extensions and New Builds. Builders public liability insurance £2,000,000.00 read more

    Latest Extensions feedback review:

    Replace old stone porch with brick one, plus a new door

    Quick, polite and tidy company. Was a pleasure to use them and will consider them again in future. Ben was happy to discuss the job beforehand, then talk through any unforeseen aspects they came across during our renovation. Price was...

    By dave74083 on

  • Sproco

    Extension Builder working in Southampton
    Trade Member since 2018

    We are a construction company who offer a wide range of services. We normally take on brickwork, refurbishment work, extensions and alterations. I myself have been in the trade for 14 years and started out with brickwork. read more

    Latest Extensions client reference:

    Building a unility room as an addition to a bungalow followed by building a patio. Josh works to a very high standard and is professional in what he does. He is punctual and tidy. I have total confidence in his building ability.

    Reference taken by MyBuilder on

  • css homes ltd

    Extension Builder working in Southampton
    Trade Member since 2020

    i am a property developer with a good crew of trades i have done everything over last 30 years from loft conversions to extensions but last 6 years have concentrated on new builds and have built over 16 houses , I am happy to look at any projects large or small Please read more

    Latest Extensions client reference:

    Rear kitchen extension Darren was professional from start to finish He was reliable, trustworthy and the quality of the work carried out was outstanding Any queries were always addressed and dealt with quickly and efficiently I am beyond...

    Reference taken by MyBuilder on

  • Bishop building contractor

    Extension Builder working in Southampton
    Trade Member since 2014

    My name is James bishop. I am level 3 advanced bricklayer with 18 years of bricklaying and general building experience . I do all types of building and landscaping works. Very proud in every job that has been done and leave every job tidy and clean. read more

    Latest Extensions feedback review:

    porch

    I was very pleased with the work carried out at my property. James explained every stage of the build to ensure I was happy. All workmen involved were friendly and efficient. When they finished each day they ensured everything was tidy. I...

    By anon-230111024504941026 on

  • Majengo Ltd

    Extension Builder working in Southampton
    Trade Member since 2018

    Over 30 years experience as principal or main contractor, building new homes, extensions and commercial fit out, contractor to all the insurance loss adjusters, various property management companies, NHS, Mod, housing associations, schools and private clients read more

    Latest Extensions feedback review:

    Two-storey extension build in Kings Worthy, Hampshire

    I can’t recommend Majengo highly enough. A great team, on budget, on time and a high quality build. Good communication throughout. We got lucky, I think.

    By stu_leask on

  • 3 Futures ltd

    Extension Builder working in Southampton
    Trade Member since 2021

    We are a full Turn key Construction company that offers Mechanical, Electrical & all Construction services, from a small repair to a major refurbishment or new build project. We pride ourselves in our ability to take an idea through to a completed reality, all this is read more

    Latest Extensions client reference:

    Terry was amazing, very polite and very skilled. Highly recommend! I already have asked him to do my next project this year. 10/10

    Reference taken by MyBuilder on

  • PDQ kerblaying & groundworks

    Extension Builder working in Southampton
    Trade Member since 2022

    We are a small groundwork/civil engineering company with over 40 years of experience covering every aspect. We offer experience and knowledge to domestic customers for such things as slip and slab foundations ,drainage, fencing, driveway and patio preparation and read more

  • Best Home Solution

    Extension Builder working in Southampton
    Trade Member since 2021

    We Building trust with best quality work. read more

  • Region Home Improvements

    Extension Builder working in Southampton
    Trade Member since 2021

    Why choose Region Home Improvements? We are a group of builders with years of experience and pride in our work. We offer a range of external and internal renovation options and specialise in: - uPVC/Aluminium window and door installation - Rooflight installation - read more

  • K.wheeler-osman

    Extension Builder working in Southampton
    Trade Member since 2019

    I am a fully qualified bricklayer with over 35 yrs experience, i take pride in my job and work to a very high standard, i can build extensions, garages, garden walls, repointing and property maintenance,landscaping,small demolition, no job too small, realistic prices and read more

    Latest Bricklaying feedback review:

    Install 2 air vents through brickwork

    Was only a small job but Kevin was more than happy to come out and quote at short notice.. work was completing quickly and cleanly. Would definitely recommend and use again.

    By dan_d_66 on

  • D.R.B.S

    Extension Builder working in Southampton
    Trade Member since 2017

    I have a roofing and building company building exstention on a day to day basis we cover all aspect of the building trade from guttering to foundations and exstention read more

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 Southampton in Hampshire have an average review score of 98% positive based on 2,861 homeowner reviews.

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