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Find an Extension Builder in Blaenau Gwent
Find a local extension builder near you. We have 1,126 trusted and reviewed extension builders in Blaenau Gwent to choose from, based on 851 reviews.
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Extension Builders in Blaenau Gwent
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Supply and installation of all upvc and aluminium products including windows doors and Conservatories. Other trades available on request. All work comes with a 10 year insurance backed guarantee.
Latest Glazing - Double / Single Review
"Brilliant fitter. Good quality windows"
Reviewed by Clai on 21st Jan 2026Based in NP23 6AB,
Ebbw Vale
Extension Builder covering Blaenau Gwent
Member since Dec 2023
ID Checked
We are a established damp proofing and reputable building company with 30+ years of experience in all domestic and commercial properties throughout the South Wales and East valleys. fully qualified and insured. We also undertake loft conversions and...
Latest General Maintenance Review
"The guys were great, got the job done in no time at all."
Reviewed by Owen on 2nd Feb 2026Based in NP20 4BX,
Newport
Extension Builder covering Blaenau Gwent
Member since Dec 2025
Public liability insurance
Insulationize ltd is a general contracting firm specializing in residential renovations and additions. We are a full-service company dedicated to quality construction and client satisfaction. Our goal is to provide our clients with a high-quality fin...
Latest Internal Rendering Review
"Matt was excellent - friendly, professional and helped put my mind at ease with a house I'm buying - 10/10 recommend!"
Reviewed by Lily on 8th Dec 2025Based in NP22 3SE,
Nantybwch
Extension Builder covering Blaenau Gwent
Member since Aug 2021
ID Checked
Hi we are a friendly and honest Company, who always do everything to help and make customers feel safe and happy, we price all Jobs with exact price from start to finish, everything is done in a law contract, so costoms feel lot safer from cowboys,...
Latest Wooden Doors - Internal Review
"Excellent work done, friendly service"
Reviewed by Joana on 11th Nov 2025Based in CF45 3TL,
Mountain Ash
Extension Builder covering Blaenau Gwent
Member since Jan 2020
Public liability insurance
I have been trading for over 35 years in the building game and cover all aspects of the building trade and I have my liability insurence up to date
Latest Builder Review
"John and Andrew have worked on major renovation projects and extensions at our home over the past 5 years. The fact that we keep returning to them is testament to their quality work and our excellent working relationship. I would..."
Reviewed by Alec & Lisa webley on 3rd Jun 2025Based in NP23 4DA,
Brynmawr
Extension Builder covering Blaenau Gwent
Member since Jul 2024
ID Checked
We are a family owned Builders. We take on almost anything from building extensions, to repairing leaks, just ask and if we cannot do it we will let you know.
Based in NP23 6HS,
Ebbw Vale
Extension Builder covering Blaenau Gwent
Member since Jul 2022
Established property development, ex military with a strong work ethic and a keen eye detail. For all your property development needs
Based in NP23 6HY,
Ebbw Vale
Extension Builder covering Blaenau Gwent
Member since Sep 2024
I have complete my bachelor degree in civil engineer
Based in NP23 4AJ,
Brynmawr
Extension Builder covering Blaenau Gwent
Member since Feb 2024
<a href="https://baileysbuildingcontractors.co.uk/">Baileys Building Services</a> aims at bringing their client’s vision to life with superior craftsmanship & unparalleled service. They pride themselves on their meticulous attention to detail, a...
Based in NP23 7RU,
Cwm
Extension Builder covering Blaenau Gwent
Member since Mar 2025
H&R construction and roofing has many years experience, happy to take on any type of roof works including velux window fitting and flat roofing. We also do some ground works such as patios and deckings. We have recently been building outdoor summ...
Based in NP22 3TL,
Cefn Golau
Extension Builder covering Blaenau Gwent
Member since Jul 2024
ID Checked
Groundworks,Bricklaying, Landscaping, Concreting, Paving, jet washing and window cleaning All aspects of general building
Based in NP22 3BP,
Nantybwch
Extension Builder covering Blaenau Gwent
Member since Sep 2025
ID Checked
Here at GoToBuilders we pride ourselves on our work. All our workmanship is finished to the highest quality, only using the best quality materials out there. We have the customers interest and ideas at the centre of our projects. All our employees ar...
Based in NP13 3AB,
Blaina
Extension Builder covering Blaenau Gwent
Member since Feb 2021
ID Checked
Hi I’m a builder for about 16 years now all aspects of home renovations undertaken from full home restoration to fitting kitchens bathrooms hanging doors and so on
Based in NP22 4LU,
Tredegar
Extension Builder covering Blaenau Gwent
Member since Jan 2026
Family run business from Ebbw Vale with over 20 years experience in all aspects of groundwork
Based in NP23 6LZ,
Ebbw Vale
Extension Builder covering Blaenau Gwent
Member since Jan 2024
We're a gang of experienced builders, with many of years experience between us. We specialise in extensions, groundwork,brick laying, internal knock out and lintel work. We have a vast portfolio of jobs under our belt, both internal and external...
Based in NP22 4PP,
Tredegar
Extension Builder covering Blaenau Gwent
Member since Dec 2024
ID Checked
All building work from small jobs Extensions Refurbishments All work carried out by professional trades
Latest Plaster Skimming Review
"Very friendly did everything I asked will use again"
Reviewed by Elizabeth on 4th Feb 2026Based in CF62 9BU,
Barry
Extension Builder covering Blaenau Gwent
Member since Apr 2017
ID Checked
I founded my building company over 20 years ago, since which time I have proudly watched it expand into an exceptional team of friendly and highly skilled perfectionists. We care passionately about our work and also pride ourselves on being great lis...
Latest Garage Conversion Review
"Piotr converted our garage into an office and snug space and did an amazing job. He is very hard working and always responds to messages very quickly unlike other builders we've dealt with in the past. Highly recommend!"
Reviewed by Louise on 11th Jan 2026Based in BS10 7PW,
Bristol
Extension Builder covering Blaenau Gwent
Member since Jan 2025
Public liability insurance
At JN Building Services & Property Development, we specialize in new build extensions and quality construction solutions across South Wales. With over 11 years of industry experience, founder Johnathan leads each project with a hands-on approach...
Latest Chimney Building / Repair Review
"Jonathan was great - showed up as promised and was professional and helpful."
Reviewed by Emily on 23rd Dec 2025Based in CF72 9QA,
Llanharan
Extension Builder covering Blaenau Gwent
Member since Sep 2025
Public liability insurance
I've been in the building trade for 30years. Im a qualified bricklayer and stonemason and have a wide range of skill throughout the whole building and maintenance industry. I've worked all over the uk and Ireland and don't mind traveli...
Latest Man with a Van Review
"He contacted me quickly, gave a very reasonable quote and carried out work efficiently later the same day and was punctual. Highly recommended"
Reviewed by John on 19th Dec 2025Based in NP44 1JT,
Cwmbran
Extension Builder covering Blaenau Gwent
Member since Dec 2025
ID Checked
LARH Construction I am a carpenter by trade I have worked for myself for 20 years. Plus working with many other traders
Latest Walls & Pillars Review
"Matthew and his team completed work exactly to specification for the quoted amount and did an excellent job. He kept me up todate with visit times and always turned up when agreed. Highly recommended."
Reviewed by Michael on 11th Dec 2025Based in CF35 6YT,
Pencoed
Extension Builder covering Blaenau Gwent
Member since Dec 2024
ID Checked
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