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Post a job
Tell us about your job, and we'll alert suitable extension builders in Cardiff. It’s simple and free.
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Tradespeople respond
Once your job is posted, you'll get responses from interested extension builders through the website.
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Review and choose
Browse profiles, work history, and feedback, then choose who you wish to share your details with.
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J D Renovations and Building Services
10 reviews • 100% positive ratingExtension Builder working in CardiffTrade Member since 2018I undertake and type of construction work from new builds, extension, loft and garage conversions through to complete renovations of commercial or domestic property. read more
Latest Extensions feedback review:
Single Storey Extention
James and his team were all very professional, polite and accommodating. James’ communication was excellent and he wouldn’t take long to get back to your text message. A fair payment plan for the work was in place and even during a...
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McCann Building Services
43 reviews • 98% positive ratingExtension Builder working in CardiffTrade Member since 2010DEDICATED PROPRIOTER OF A SMALL BUILDING COMPANY WHICH TAKES A GREAT PRIDE IN ITS WORK FOR OVER 20 YEARS WE HAVE BEEN HELPING OUR CLIENTS REACH THEIR DREAM CHANGES 2004 BUILDERS FROM HEAVEN FINALISTS WELSH COMPANY OF THE YEAR WE ENJOY OUR WORK AND ARE VERY PROUD read more
Latest Roofing (Pitched) feedback review:
Victorian Terrace needs urgent new roof.
It was a difficult job, access issues and repairing well intentioned work done by another contractor. Dealt with professionally and with good humour. Very happy to recommend. Price was as expected, despite additional costs being incurred by...
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Daves Patio & Building Services
20 reviews • 100% positive ratingExtension Builder working in CardiffTrade Member since 2016Advanced city and guild bricklayer been in the building trade since I left school 38 years of experience. All aspects of building work from new builds to extensions, landscaping, renovation work and paved driveways. read more
Latest Repointing feedback review:
Possible pointing on back of house, small area
It appears that he’s done a very good job I would certainly have him to do other jobs required. He’s a very nice man and left the area he worked on clean and tidy. I would recommend him.
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J. Whitfield Building Services
7 reviews • 100% positive ratingExtension Builder working in CardiffTrade Member since 2017Hi my name is justin I'm a self employed bricklayer nvq2 I have worked on every aspect of building work from new builds to extensions and renovations.i have been in the construction industry for 18years I have covered many areas of ground works from drainage to block paving read more
Latest Extensions feedback review:
Small extension and knock through
Justin did a great job on our small extension and kitchen knock through. He saved our backs after our original builder had let us down and was able to take on the project quickly for us. We heard back from him almost immediately after...
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A Spec building & landscapes
51 reviews • 100% positive ratingExtension Builder working in CardiffTrade Member since 2014A.spec building & landscapes are a small family run building, landscape and stonemasonry company, Giving professional advice from our many years of experience ensures the best service possible, Satisfaction from start to finish. We truly believe in going the extra mile for read more
Latest Repointing feedback review:
Repointing and brick replacement
A spec did an excellent job with the pointing on the front and side of our house. Really pleased with the result, and have had numerous complements from neighbours. Would highly recommend!
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Jpb masonry & builders
No reviews yetExtension Builder working in CardiffTrade Member since 2023- read more
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C C & M Plant and Maintenance Services Ltd
No reviews yetExtension Builder working in CardiffTrade Member since 2018We are a family owned business with our own permanent team of experienced specialist trades, i.e. bricklayers, carpenters, plumbers, electricians and plasterers. We undertake all types of work from Insurance work to New builds and extensions, Property maintenance and read more
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Kieran McConnachie
No reviews yetExtension Builder working in CardiffTrade Member since 2020Hi, my names Kieran and I run multiple companies in the building industry. We offer residential and commercial services and maintenance. Over the last 10 years we have developed a large portfolio of works in all aspects, any from extensions, conversions, kitchen & bathroom read more
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Rowla Construction Limited
5 reviews • 100% positive ratingExtension Builder working in CardiffTrade Member since 2021A local construction and maintenance team based in Cardiff. We have taken on domestic projects such as attic/attic dormer conversion, extensions, full remodel of properties, commercial conversions and structural alterations. We’ve also completed projects from kitchen and read more
Latest Plumbing feedback review:
Potential leak in garden waterpipe to outdoor tap
Rowla were very responsive with clear communication. Arriving on time, Ben was very knowledgeable and spent time evaluating the best solution for our problem. Would definitely recommend them and we will be using them again in future! A...
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C.A.P Renovations
3 reviews • 100% positive ratingExtension Builder working in CardiffTrade Member since 2018Hello my name is Craig, I am the owner of CAP Renovations. We undertake all aspects of building and renovation work from plastering and carpentry to single and two story extensions. Thankyou for viewing my page I look forward to hearing from you. read more
Latest Plastering feedback review:
Various plastering and door removal
Craig recently did extensive plastering in our new house that was left in a pretty poor state. He arrives early everyday and works methodically, precisely and quickly whilst dealing problems efficiently. I was amazed by how quickly he could...
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WW Bricklaying Contractors
No reviews yetExtension Builder working in CardiffTrade Member since 2022We are a newly established company with over 15 years of experience in the industry. We are bricklayers by trade but we have the knowledge and ability to complete a range of work including ground work,drainage, knock through's, aswell as building you your dream home weather read more
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CE ltd
No reviews yetExtension Builder working in CardiffTrade Member since 2022We are a building contractor read more
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Debwin construction
No reviews yetExtension Builder working in CardiffTrade Member since 2021Debwin construction is a well-established loft conversion company which has built up a first-class reputation in the building industry by successfully delivering high-quality projects. The company’s core values are quality, efficiency and reliability. We’re proud to say read more
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Blackrock Construction
No reviews yetExtension Builder working in CardiffTrade Member since 2019We at Blackrock can carry out work from the ground upwards. We will fully project manage so you don't have to. We cover extensions, renovations, new build and even do the little job you hate. We are a new family run business but with a combined experience of 80years read more
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Mepani Builders
30 reviews • 100% positive ratingExtension Builder working in CardiffTrade Member since 2009We are group of 4 people all skilled in different trades so we can do A to Z jobs our self. We are fully aware of rules and regulation of building industry and keep ourself updated as well so, we can deliver best quality of work to my customers. We take great pride in our read more
Latest Handyman feedback review:
Drilling a mirror onto a tiled wall plus a other jobs
Perfect. Turned up on time. Explained how he would do the job and did it to a high standard. Was polite and efficient. Would certainly use again. Gareth
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Jason
No reviews yetExtension Builder working in CardiffTrade Member since 2022Hi my names Jason I’m a carpenter by trade doing it about 15 years and can’t put my hand to anything really read more
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A B plastering and building
4 reviews • 75% positive ratingExtension Builder working in CardiffTrade Member since 2012i have been in the building industry all my life and have a wide range of jobs to go in my portfolio read more
Latest Restoration & Refurbishment client reference:
Andrew is really, really good. He had worked for me before and recently has undertaken quite an extensive amount of work for my Mum, including new kitchen, new bathroom and created a new cloakroom which is wonderful. He is decent, ...
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G Thomas construction
2 reviews • 100% positive ratingExtension Builder working in CardiffTrade Member since 2019I've been in the industry for over 50 years, I have a small team covering all trades. Our main projects are extensions and loft converions. We use only qualified plumbers and electricians who are corgi and part P registered. read more
Latest Carpentry feedback review:
Partition plasterboard separating room
Jeff and paul was such a pleasure to work with. They did an excellent job clean tidy exactly how i wanted it and always cleaned up after them self. They turned up on time and always kept me updated. They also as very resnable on the price...
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Muscle Stone & Brick Solutions
12 reviews • 100% positive ratingExtension Builder working in CardiffTrade Member since 2019Hi and thank you for your time. With 15 years working as a sub contractor and 5 years now working on my own jobs I feel I have a good understanding of customers needs. I charge a fair price based on the current industry, also taking into account your budget. I pride read more
Latest Stonemasonry feedback review:
Rebuild garden stone/ brick wall
It was a pleasure having Paul complete the job, he offered creative solutions to the issue of our collapsed wall and was professional and prompt. I would use him again for any future jobs and he was very competitively priced. Job looks...
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RDL Building Services Ltd
No reviews yetExtension Builder working in CardiffTrade Member since 2020RDL Building Services Ltd is owned and run by Robert Lewis along with his son David. Robert has over forty years experience in the building trade with projects ranging from new build houses, extensions and loft conversions.We carry out the full package from plans to 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
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