The quick way to find a local House Extension specialist in Mountain Ash

Eco Build

House Extension

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We are a family run building company, with vast experience in many different aspects of the game. We have a great team of qualified, competent and very loyal people. Which allows us to cover many aspects of the building and landscaping industry. We enjoy working together with our clientele, designing and completing projects to create the perfect home.

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Reviewed by sandra on 3/2/2026

Patio laid quickly and efficiently. Tom and his team arrived punctually every day and were all very hardworking and polite.

SWE Property

House Extension

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An established and friendly business offering a fully comprehensive service to customers old and new. We offer customers a complete suite of services to improve and maintain their properties. We offer a full range of services including but not limited to the following. Electrical plumbing Carpentry Kitchens and bathrooms Tiling General maintenance General building Windows, Doors and Facias Gardening and landscaping Clearance We are proud of our past, as reflected in our perfect five star rating here on Rated People, but at the same time we like to innovate and would be delighted to discuss your plans with you regardless of what they entail, as we are confident that we can assist in making your projects a reality. We pride ourselves on ensuring that our customers are happy with the delivery and finish of any project that we undertake, and we are fully insured to undertake all work that we accept a commission for. We ensure that all of our technicians are suitably qualified and experienced in any work that we undertake, and we undertake all of our work with a eye on customer satisfaction and value for money. So whatever you have in mind call us for an informal chat, and we will arrange a visit to discuss your requirements, in detail. Call or message us today.

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Reviewed by Vaughan hinkin on 2/1/2026

Gavin was extremely helpful and professional at is job and cleaned up after Himself

Carlos Trader

House Extension

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Karlos Trader – Your Reliable Home & Garden Experts With 12 years of experience, we handle everything from clearing clutter, painting, wallpapering, tiling, installing kitchens and flooring, to gardening services like lawn care and tree work. I personally carry out the work myself, ensuring high-quality results you can trust. Let us make your home and garden look their very best!

Cambrian Roofing LTD

House Extension

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With over 40 years of experience led by Steve, alongside 11 years working as a father-and-son team, we deliver expert roofing, scaffolding, solar panel installation, and general building services across the UK. As accredited members of the NFRC, TrustMark, the Competent Person Scheme, and MCS, customers can trust us to meet the highest industry standards. We pride ourselves on quality workmanship, honest advice, and reliable service � all at competitive prices

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Reviewed by Natasha on 31/1/2022

Complete new roof completed by Steve and his boys. By far the most professional service we received in the quoting process and pleased to say the job matched up too.

G M Lewis Building and Carpentry

House Extension

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We are a carpentry based building company based in south Wales, we aim to provide quality workmanship at competitive prices. We cover all aspects of carpentry and small building works including full renovations, extensions, loft and garage conversions.

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Reviewed by caroline on 11/12/2022

Didnt turn up made out his van of road

The Bryson Group

House Extension

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We at Team Bryson are specialists in the complete infrastructure of development. With all trades under one roof, we do it all, from start to handover. We offer windows and doors, porches, conservatories, orangeries, sustainable energy solutions and extensions. We are very proud of our achievement, they include seven trade awards and one outstanding achievement award. We are rated to be within the top 5% in the UK, by an independent validation and verification company. Team Bryson, award winning fitting teams from an award winning company. We cover the whole of South Wales, Bristol and Bath. Over 36 years experience in the industry, tried, tested and proven to be top in our fields of expertise.

GLG Contractors Building And Plastering

House Extension

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I am an experienced builder. i have built my business up through a good reputation. I have 21 years of experience within the building trade with qualifications within all aspects of plastering and rendering. I have a small team of skilled tradesmen, including roofers, carpenters, and plumbers, which enables us to take on a wide variety of jobs and complete them to a high standard.

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Reviewed by Ruchard on 17/1/2026

Gavin has been excellent; from the initial quote through to completion, I knew I was dealing with a professional who was capable and took complete pride in his work. He has talked me through every step of the job, shown attention to detail, listened to my suggestions and improved upon them. Gavin and Nathanhave worked tirelessly and finished the job in record time. Their workmanship is first rate and, now they have finished, have left things in a clean and tidy state. I would not hesitate to recommend them.

ELEMENTS BUILDING & CARPENTRY LTD

House Extension

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We are a family run business that provide a high quality of work with excellent customer service. No job is to big or small, we offer from small jobs to improve your property to large jobs such as new builds, extensions and renovations. We are here to provide a high quality end product. The company is fully insured and qualified to complete the projects.

Nicki Walters

House Extension

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hi my names nicki i'm a multi-skilled tradesman with 17 years experience. I have worked along side a number of highly skill and multi talented tradesmen like myself. I offer a wide range of services. Thanks for talking the time to reading this ad.

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Reviewed by Azar on 9/3/2023

Artcon Construction

House Extension

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Hi, we are a family run professional company that offers many aspects of construction and building work, after training in 2005 to 2009 at carillion bricklaying college in Cardiff, myself (Leyton) and Jason then decided to work in the house building industry, building 100s of new homes from £100k to £1 million, working for companies such as Redrow, Barrat homes and many others, we gained immense experience and from this decided to start a company, after over a decade of working for other companies, we now have many years experience in many areas, including new build, extensions, bespoke garden project, installation of bi fold doors, as well as vast experience in groundworks, we also offer roofing services of the highest quality, we are both NVQ level 3 qualified and both have the advanced construction award qualification rarely seen, we achieved Chas accreditation as well as sssts, we are a company who prides ourselves on going above and beyond on every project we carry out, you won't find more able tradesmen who do what we do.

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Reviewed by Justin on 5/1/2026

1st Choice Landscaping and Groundwork

House Extension

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Family run business, with thirty years experience in the industry. We are a friendly and reliable service.

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Reviewed by Keith on 1/5/2024

A good job, expertly carried out, but not quite up to our expectations with clearing the debris. It took us two days to get the garden back to normal. The second phase of the order is yet to be done and I’m sure that they will satisfy our requirements.

Cymraeg Construction

House Extension

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At Cymraeg Construction, building work has been at the heart of our family for generations with skills, knowledge and training passed on from one to another, even in the day to day running of the business we can call upon over 40 years experience from my father who is an integral part of the company and has made us what we are today with a passion for quality that shines through on every job we undertake. Covering all of South Wales, you can be sure to rely on us to undertake any project you may have from conception to completion, we can take care of all aspects of the build including planning and skilled tradesmen in all trades, let us deal with all the complications and timings as we project manage the process to ensure everything is done correctly and to schedule all while keeping you informed every step of the way. Please feel free to contact us for a free no obligation estimate on any work you may have. Cymraeg Construction.

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Reviewed by carole on 22/5/2025

Gareth and his team were amazing and professional throughout. He was very knowledgable regarding the options available to us. All work was completed quickly and efficiently. Gareth kept in contact with us throughout our garage renovation and even kept in touch afterwards to check everything was ok for the fitment of the garage door. I wouldn’t hesitate to recommend Gareth and his team and would definitely use them again for any future building work on my home. Great job completed.

Elite Building Contractors South Wales

House Extension

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Elite Building contractors South Wales. We are a multi trade company with over 30 years experience, we Specialise in extensions, house renovations, garage conventions. Bricklaying Patios Damp proofing

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Reviewed by Kate on 22/5/2025

We engaged Stuart and his team in 2023 to help remodel our garage into a suitable office space and gym. In all, it has cost us an additional £4.5k to rectify the issues Stuart and his team made from a poorly fitted garage door which voided the manufacturer's warranty, poorly rendered exterior, numerous snagging issues and unfinished work. I would not recommend.

Orange Grove Construction

House Extension

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started buisness in 2008 after 24 years employed on site for 3 construction companies we specialise in extensions new builds loft conversions garage conversions refurbs and renovations timber frames all building trades in house from groundworks to finished product ,city and guilds qualified citb registered your one stop company

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Reviewed by richard on 12/6/2016

Exceptional service - clean and quality job at a very competitive price. I totally recommend these guys.

fibreglass roof master ltd

House Extension

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We are a family run business that specialises in Fibreglass roofing and building company with over 20 years experience in the industry, we can fit fibreglass to almost any environment, We have one of the best names in the business and take pride in all our work from quoting the job to finishing the job . We have our own teams of trades plumber joiner , plasterer , electrician for every job we can complete start to finish , I have a architect and Structal engineer for early stages in any new build. No upfront fees either , we always happy for you to call in and see our projects as we undertake them and our customers for peace of mind.

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Reviewed by Peter on 3/4/2018

Great job very professional

Fren Group

House Extension

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At FREN, we are proud to offer a wide range of building services in South Bristol, designed to bring your ideas to life. From small-scale residential projects to large landscaping transformations, our skilled team delivers results that combine style, strength, and functionality. Every project is carried out with a commitment to high standards, ensuring your home or outdoor space is built to last.

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Reviewed by Donato on 22/11/2025

Ben responded to my posting within the day. He arrived when he said he would and fixed the problem very swiftly. Very reliable, professional and polite service. I would recommend and would not hesitate to use Fren again.

A And B Consand Maintenance

House Extension

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Building and maintenance company specialising in carpentry and plastering.

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Reviewed by Alex on 3/11/2023

Had Adam down for a chimney breast removal and they’re talented, friendly guys with fair prices. Can’t ask for much more. The plastering was very smooth!

Custom Carpentry Solutions

House Extension

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Established in 2016 as a new venture to provide a new customer friendly carpentry and joinery experience. We set out our business aims with one thing in mind (COMPLETE CUSTOMER SATISFACTION). We strive to meet all of our customers demands

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Reviewed by Oliver on 18/10/2022

Gavin came and changed 15internal doors in 2 days. I didn’t think it could be done but he proved me wrong. Great finish and he even put up with my yappy Dachshund on the first day. Would definitely use again for future works.