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  1. Post a job

    Post a job

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

  • Milne Construction

    Extension Builder working in St Agnes
    Trade Member since 2016

    Solid Reputation. Concrete Values. read more

    Latest Carpentry client reference:

    I originally called Will in as a carpenter but due to the breadth of his skills, he ended up doing all our building work and has completed all works to a very high standard which we are very happy with. I would definitely recommend Will for...

    Reference taken by MyBuilder on

  • IJ Tingey Construction

    Extension Builder working in St Agnes
    Trade Member since 2018

    I have been in the building trade for 35 years, covering all aspects of building work including: Bricklaying/block and stone work. Barn, loft and garage conversions. New builds and extensions. New and reclaimed conservatories As well as larger projects I’m also happy read more

    Latest Extensions feedback review:

    Replacement Extention

    Ian and Tosh of IJ Tingey were a pleasure to deal with ,they were punctual and kept the job on schedule regarding times and costs , all works were carried out to a high standard and we was really happy with the end result , this firm is...

    By brg_75 on

  • wj.webster construction

    Extension Builder working in St Agnes
    Trade Member since 2011

    i specialize in groundwork foundations new builds convertions extentions plastering skiming bricklaying roofing read more

    Latest Tarmac Surfaces feedback review:

    Remove gap under garage door.

    John came to the rescue after the first contractor I hired disappeared without a trace after agreeing to do the job. John and his colleague came round promptly, always replied to any communications swiftly, and gave an estimate that was...

    By willce on

  • PR Developments

    Extension Builder working in St Agnes
    Trade Member since 2018

    P. R.Builder groundwork s landscaping. Extensions newbuilds renovation work brick stone block work drainage plastering dry linning roofing patios all construction work undertaken .All work fully insured. References and photos if required.I have over 40years experience in read more

    Latest Groundwork & Foundations feedback review:

    External ground level lowering and drainage improvement

    Phil did a great job for us lowering the external ground level and laying a beautiful new patio. He was helpful, flexible, friendly and reliable whilst working around some difficult weather conditions! Would definitely recommend, thanks...

    By jack57494 on

  • elaity carpenter and joiner

    Extension Builder working in St Agnes
    Trade Member since 2019

    We are a small family run business in the heart of Cornwall, covering all aspects of carpentry and building contract work, read more

    Latest Carpentry feedback review:

    Bespoke build

    Thank you for the quick response and getting back with the estimate. Unfortunately the costs were beyond my means.

    By gerald11434 on

  • Clive Oriordan Brickwork

    Extension Builder working in St Agnes
    Trade Member since 2017

    Family run, and I’m a time served bricklayer. I have over 18 years experience. Projects include new builds, extensions brick restoration,brick walls feature brickwork . We do a lot of structural work also.as well as being professional brick layer ,I'm multi trade.I do read more

    Latest Bricklaying feedback review:

    Catford repointing and extension

    I'm really glad I hired Clive to take on my job in Catford, he worked incredibly hard and was a pleasure to have on site. The work has been completed to a high standard for a reasonable price and I wouldn't hesitate to hire him again.

    By ryan68713 on

  • Scott Taylor

    Extension Builder working in St Agnes
    Trade Member since 2017

    We are a general building company and have nearly twenty years experience specialising in building and roofing work. We are fully insured and experienced in new builds, extensions, renovations, barn conversions etc and will also take on any maintenance jobs. It is of read more

    Latest Extensions feedback review:

    redo outside of extension

    Scott was professional, always ready to give advice, thorough and timely, keeping us up to date with the progress. The job was done quicker than expected and the price was adjusted accordingly. I definitely would recommend him and look...

    By maysun_latte on

  • Jackson Developments

    Extension Builder working in St Agnes
    Trade Member since 2013

    At Jackson Developments we have a team of highly skilled tradesmen covering all areas of building and renovations. From home improvements to full house builds, loft conversions and extensions. We deliver quality every time at a price you can afford. read more

    Latest New Builds client reference:

    Paul did a full house build for us. It is a very complicated house - high insulation level, energy efficient - level B. We have a multifuel stove, underfloor heating and solar heating - all integrated. We also had a heat exchange unit...

    Reference taken by MyBuilder on

  • Bastion Developments (Builders & Contractors) Ltd

    Extension Builder working in St Agnes
    Trade Member since 2017

    We specialise in domestic and light commercial projects with 31 years in the construction industry. The managing director takes a very much 'hands on approach' to the work and who is qualified in Construction and Civil Engineering with an NVQ level 4. We carry out read more

    Latest Conversions - General feedback review:

    Remove cupboards & tall fridge from wall,& make good

    Adam has been very personable, knowledgeable & efficient. We discussed a few jobs which need attention and my priority was a damp patch. He suggested ways to tackle the patch within my budget and got on with the work promptly. He was...

    By denzi on

  • Apex Carpentry & Construction

    Extension Builder working in St Agnes
    Trade Member since 2018

    A qualified and insured, professional and dedicate team offering all aspects of carpentry and building services. read more

  • Shane Hubbard

    Extension Builder working in St Agnes
    Trade Member since 2017

    I have 35 years experience in general house building e.g. carpentry, plastering, masonry and groundwork. We often do renovations, extensions and conservation work. Its been a family business since 1976 and we take great pride and care in our work.I have 2 teams comprising of read more

    Latest Damp Proofing feedback review:

    Damp internal walls on 50 year old bungalow

    Looking forward to Shane sorting out our problem damp walls early in the New Year.

    By steve44788 on

  • DCM builders

    Extension Builder working in St Agnes
    Trade Member since 2017

    We carry out any type of building work, renovations, kitchens and bathrooms. read more

    Latest Conversions - General feedback review:

    Internal wall to be removed ASAP

    Definitely use these guys again 🙂

    By lizzie81438 on

  • C Oakes and Son ltd

    Extension Builder working in St Agnes
    Trade Member since 2018

    A family ran business priding in give a great service and high work standards at a reasonable rate. read more

    Latest Carpentry feedback review:

    Hanging 7 doors

    Great job carried out quickly and professionally. Will use again and would recommend.

    By andy63090 on

  • Webber and son builders ltd

    Extension Builder working in St Agnes
    Trade Member since 2022

    We are a family run building company who specialises in new builds, extensions and house renovations. We have a team of trades in house including electricians, plumbers, carpenters, painters and decorators and roofers read more

  • Rhys

    Extension Builder working in St Agnes
    Trade Member since 2022

    Hi there. As company we like to do all sorts of work as it's good to keep are skills up and it helps everyone out. We have a high standard on all the jobs we do and like to keep it nice and clean so the customer can appreciate the work we have done as well as they can read more

  • Jamie Johnston Carpentry & Construction

    Extension Builder working in St Agnes
    Trade Member since 2018

    Jamie is professional carpenter with a friendly, outgoing attitude to provide a variety of carpentry and building services. From fitting a new kitchen to building your dream extension, Jamie can provide the skills and high quality tradesmen to complete the project. read more

    Latest Hard Flooring feedback review:

    Fit laminate in my bathroom

    Jamie did a great job of fitting my bathroom laminate flooring. He was friendly and efficient, and even charged me less than his original quote as the job had taken him less time than he d predicted. I'd highly recommend him.

    By pippa59045 on

  • JBV BUILDERS LTD

    Extension Builder working in St Agnes
    Trade Member since 2017

    I have been in the building trade for 22 years , We do all aspects of building work . A friendly and reliable service , we take great pride in our work read more

  • an carpentry

    Extension Builder working in St Agnes
    Trade Member since 2020

    We are a small Cornish company who take pride in everything we do. Customer satisfaction is our main aim. We have various skills between us all and can guarantee a high standard of work will be carried out every time. read more

    Latest Hard Flooring client reference:

    Alex, was very polite, professional, reliable and on time. He did a wonderful job on my kitchen and hallway floor. Would definitely recommend him 100%

    Reference taken by MyBuilder on

  • Warvena construction

    Extension Builder working in St Agnes
    Trade Member since 2020

    Our company, Warvena Construction Ltd are an honest, local, Award Winning Cornish Builder, who over the past decade have built traditionally crafted homes with a modern approach. Our services cover the whole of Cornwall in all aspects of construction, we have considerable read more

    Latest Conversions - General feedback review:

    Convert internal garage to en-suite bedroom

    Adam and Chris were super when we were collecting quotes for the job, and very responsive to our queries and concerns. There were Brexit, pandemic, and building-regs related delays to starting, and completing, the job, but Adam and Chris...

    By james_1wd6 on

  • MP Carpentry

    Extension Builder working in St Agnes
    Trade Member since 2021

    All aspects of carpentry read more

    Latest Carpentry feedback review:

    Rehang door?

    Friendly chap, did the job ,and swept up after .

    By cynthia_56 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 St Agnes in Cornwall have an average review score of 99% positive based on 1,468 homeowner reviews.

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Mumsnet rated 2019

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