Extension builders in Merthyr Tydfil

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 5 (2 reviews)

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Some of our top rated extension builders in Merthyr Tydfil

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Mears-Inc limited
Rating: 5 out of 5
Extension Builder in Merthyr Tydfil
Mears inc is a family run specialist contracting company providing all aspects of building, ground works and demolition for residential, commercial and agricultural buildings and land. Have completed to high standards many projects ranging from single storey extensions to new build houses and blocks of apartments
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Latest review:
Groundwork & Foundations- 4 Sep 2025
Very reasonable price. Started a few days later. The work involved boring through brickwork and clockwork. Excavating the garage floor, excavating an inspection hole and making good. Cleaned up every day and done a great job
Harrison brickwork
No reviews yet
Extension Builder in Merthyr Tydfil
14years experience on the trowel and in construction,hardworking , honest fully qualified bricklayer.
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Knock on wood Swansea
Rating: 5 out of 5
Extension Builder in Merthyr Tydfil
Small family run business. Have close to 20 years of experience in building industry. Specialise in custom builds and custom carpentry work like staircases, kitchens and built in wardrobes built from scratch. Our building journey had started in London where quality really matters and a high end finish is always expected. We want to deliver that same high standard in south wales and build our reputation based on quality of work. At beginning of 2019 as our property portfolio grew and have also seen an opportunity to offer our services and knowledge locally in Swansea and surrounding towns. We offer services from design to executing the project and getting it over the finish line.
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Latest review:
Extensions- 7 Jul 2025
Build in process at present . Chose as well priced with detailed quote for each part of build , found them conscientious, excellent sticking to timescale and engaged well with building process and any updates ensuring we are happy with build . Kept drive covered to protect resin and considerate to neighbours whilst work is being carried out . Already discussing future projects as standard of work excellent and reliability of having good builder . Would highly recommend for all building work Sian and Anthony Davies
Trueline carpentry and building
New on MyBuilder
Extension Builder in Merthyr Tydfil
Hi, I’m Ciaran, a carpenter with over 20 years’ experience in the trade, covering both first and second fix carpentry. I take a lot of pride in my work and always aim to deliver a high standard of workmanship. I pride myself in being reliable, hardworking and always pay close attention to detail. I believe in doing a job properly rather than cutting corners. I take on all types of carpentry projects, from smaller jobs and repairs through to larger projects and bespoke work. No job is too big or too small, and I’m always happy to discuss your requirements and find the best solution. If you’re looking for a reliable, experienced carpenter who takes pride in what he does, I’d be happy to hear from you and discuss your project.
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S W Rendering ltd
No reviews yet
Extension Builder in Merthyr Tydfil
We are a building company that supply Bricklayers and Renderers to the local and national main contractors for small to large scale contracts. We also undertake residential & commercial smaller scale projects, extensions, alterations, etc. We meet all CDM Regulations revised in 2015 and are accredited with CHAS.
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Griffiths Carpentry & Joinery
Rating: 1 out of 5
Extension Builder in Merthyr Tydfil
Construction company based in Swansea, who specialise in Bespoke Carpentry, Extensions and Kitchens throughout South Wales.
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Latest review:
Carpentry- 16 May 2016
Obtained 3 quotes and selected Nathan after he visited the site and reviewed work and had conversation. Waited 2 weeks for him to become available and on first day contacted me to say he was pulling off the job. Apparently the door frames of this 1920's house required him to do much remedial work to get them square - primarily Nathan blàmed the plasterer who had overboarded the walls. Walls were passed for payment by two separate surveyors with over 80 years experience of the contruction industry. While it is accepted there were remedial efforts to make the frames square, this is to be expected on a house of this age - and perhaps this is where Nathan lacks experience. If Nathan had wanted to outline additional work and additional money this was open to negotiation - the most unprofessional thing is to turn up on the day of work starting and say you don't have time to do any additional work - especially as the job had been viewed before the work commenced. Didn't want to damage his reputation by providing "sub-standard work", but seemingly oblivious to the reputational damage of letting a customer down at the last minute. I have my doubts as to whether Nathan has the skills to work on houses of this age.
Hc builders
No reviews yet
Extension Builder in Merthyr Tydfil
Hello my name is Harry, I am a self employed builder with experience in bricklaying, plastering, rendering, painting and decorating and landscaping I’ve been in my trade for 15 years and during this time I have worked on various sizes of site from peoples gardens to sites with up to 800 homes
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K&A Construction
No reviews yet
Extension Builder in Merthyr Tydfil
We are a team of sole traders who undertake a wide variety of work which includes all masonry and all carpentry. We are three master masons of which with nearly 90 years experience between us And a master carpenter and a young carpenter. Between us we have completed a wide array of projects all over South Wales and England over the years. As masonry and carpentry specialists we specialise in all brick block and stone work and all woodwork and ironmongery.
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WJB General Building & Roofing
No reviews yet
Extension Builder in Merthyr Tydfil
WJB General Building & Roofing have over 18 years experience in the building trade. We are known for our high quality, professional and value for money work. With our 5 star rating - we're sure we can help you achieve the home of your dreams.
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Archstone Masonry Limited
No reviews yet
Extension Builder in Merthyr Tydfil
Here at Archstone Masonry we pride ourselves on delivering the best possible quality and service from the moment you first contact us, to the finished result. Our highly skilled and experienced team have the capability to turn your masonry dreams into reality, no matter how big or how small. With 50+ years construction experience between them, Richard, Lorien and the team have the skills and knowledge to complete detailed projects to the best possible standard.
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Westy Brickwork limited
No reviews yet
Extension Builder in Merthyr Tydfil
Experienced bricklayer with 17+ years in the construction industry, specialising in new builds, extentions, garages, garden walls, retaining walls, Stonework, Patios, and any other general building work.. Happy to offer free advice to any of my customers about the build! Recent projects: Edenstone development Lisvane Cardiff Beaufort Park is an exclusive development of just 23 exceptional luxury four- and five-bedroom detached homes. (as seen in pics) Gilfach Goch Fire Station Extension on Gilfach Goch Fire Station for 2D construction (as seen in pics) Glenboi School mountain Ash Classroom outbuilding for Glenboi school New to my builder but not new to the building game! Don't hesitate to contact me.. Please find me on Instagram.. Westy brickwork
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TRH Homes LTD
Rating: 5 out of 5
Extension Builder in Merthyr Tydfil
Been a property developer for over 20 years. All building work undertaken, new build houses from the ground up, extensions, or house renovations.
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Latest review:
Extensions- 23 Sep 2022
Russ did a brilliant job in my house , the extension was ready two weeks earlier than expected, good communication, always asking questions about how we would like to be ,what materials we would like to use , excellent people to work with!! Highly recommended
Ml carpentry & construction
No reviews yet
Extension Builder in Merthyr Tydfil
Your Vision, Our Creation🏠 All aspects of carpentry, plumbing, plastering, roofing and brickwork. Get in touch for a free quote today🔨
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KG carpentry and building
Rating: 5 out of 5
Extension Builder in Merthyr Tydfil
We are a local carpentry/building firm who take on anything from the smaller jobs such as skirtings, fitting internal doors, kitchen fitting, full bathroom refits. We also take on larger jobs such as shop fits, HMO’s, extensions and attic conversions, with an affordable and quality finish to all our work.
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Latest review:
Carpentry- 20 Nov 2020
Very good service. genuine nice team. he started and finished in time. Highly recommended. Thank you Kyle
Thomas westall contractor
No reviews yet
Extension Builder in Merthyr Tydfil
Hi there I’m a one/two man team who has 10 years experience in property maintenance and 5 years in commercial tiling/shop fitting/ bricklaying. Cscs reg. all aspect of building work undertaken with free quotes.
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R.A.L.D Construction Ltd
Rating: 5 out of 5
Extension Builder in Merthyr Tydfil
Small family construction business. We can project manage building sites to ensure the project is hitting targets. Works include start to finished jobs. External works. Garden design. Landscaping. Fencing. Turfing. Retaining walls. Patios. Repointing. Extensions. New build. Foundations. Raft foundations. Brick and blockwork. Carpentry. Plastering. Rendering. Plumbing. Electrics. Painting. Kitchens. Bathrooms. Damp proofing.
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Latest review:
Groundwork & Foundations- 8 Jul 2023
Brilliant builder. Work completed to a high standard, always turned up when they said they would, accurate quote and communication was fantastic. Would highly recommend.

Top rated Extension Builders

Our Extension Builders in Merthyr Tydfil, are rated 5 out of 5 based on 2 reviews from customers like you.

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What types of services are offered by local extension builders in Merthyr Tydfil?

Building an extension is a major milestone for any home. It’s not just about adding extra space, it’s a big step that can transform how you live day to day, opening up new possibilities for comfort, lifestyle, and family needs.

This is why it’s so important to find the right extension builders in Merthyr Tydfil for you. They can help with a variety of tasks and projects, including:

Extending your home with an extra room
Two+ storey extensions
Adding partition walls to create more rooms
Building annexes or external structures

To find the right extension builder near you, simply post your job on MyBuilder. Explain the type of help you’re looking for, and then home extension builders in Merthyr Tydfil who are available and interested can respond to your post.

Browse profiles, read customer reviews and get quotes from your chosen Merthyr Tydfil extension builders, all before you decide who to hire.

What are the hourly rates of extension builders in Merthyr Tydfil?

Before getting started with your extension project, it’s important to have a clear budget in place. On average, extension builders in Merthyr Tydfil will charge between £16 and £42 per hour.

Single-storey rear extensions cost between £20,000 and £60,000 depending on size and finish.
The cost of double-storey extensions, which add more space and value, can range from £100,000 to over £170,000.
Larger wrap-around extensions that combine multiple extension types can range from £40,000 to over £120,000.

The cost of an extension will vary depending on your property. For instance, extending in certain areas may require structural adjustments to ensure stability, which can increase your material and labour costs.

To get an accurate price for your home extension, request detailed quotes from several Merthyr Tydfil extension builders near you on MyBuilder. This allows you to compare what each quote covers and how much your Merthyr Tydfil home extension project is likely to cost.

Find extension builders in Merthyr Tydfil with MyBuilder

Hiring the right extension builder in Merthyr Tydfil with MyBuilder couldn’t be easier. Just follow these simple steps:

Step 1: Post your extension project on MyBuilder

Whether you’re planning a single-storey extension, a loft conversion, or adding a new room, post your job on MyBuilder to find local Merthyr Tydfil extension builders. Once your job is live, we’ll share it with home extension builders in Merthyr Tydfil who can express their interest.

Step 2: Compare different extension builders in Merthyr Tydfil

When you start receiving interest, review profiles of local Merthyr Tydfil extension builders, check their previous work, and read real customer reviews. Ask about timelines, materials, and request detailed quotes.

Step 3: Hire Merthyr Tydfil extension builders with confidence

After gathering all the information and quotes from your chosen home extension builders in Merthyr Tydfil, compare their experience, guarantees, and costs before choosing who to hire.

You’ll also have confidence knowing that every tradesperson on MyBuilder is verified through several checks, including:

ID verification: When a tradesperson joins MyBuilder, we ask for a valid ID, such as a passport, ID card, or eIDAS certificate.
Company verification: For tradespeople operating under a company, we make sure every tradesperson has a registered business.

Did you know? Our continuous monitoring and complaints process ensures that tradespeople who don’t meet our standards are promptly removed from MyBuilder’s platform.

Merthyr Tydfil extension builders are ready to help. Use MyBuilder today to find the right professional for your home extension.

What to ask a Merthyr Tydfil extension builder before hiring?

Before hiring an extension builder in Merthyr Tydfil or extension building company in Merthyr Tydfil, ask a few key questions to make sure you’re choosing the right professional for your home extension project.

What qualifications and experience do you have as an extension builder in Merthyr Tydfil?

An extension builder in Merthyr Tydfil should have a strong track record with similar projects and relevant building qualifications or trade memberships, such as the Federation of Master Builders (FMB) or TrustMark.

Will my home extension meet all building regulations and planning requirements?

Your Merthyr Tydfil extension builder should ensure the project complies with Building Regulations and, where necessary, handle or assist with planning permissions. Ask how they manage building control inspections and what documentation you’ll receive once the project is complete.

What experience do you have with similar extensions in Merthyr Tydfil?

Ask to see examples of their previous work, or view examples of their work on MyBuilder. Ideally projects similar to yours in scale and design. This helps you assess the Merthyr Tydfil extension builder’s ability to deliver a result that meets your expectations.

How long will the extension take to complete?

Extension project timelines can vary depending on size, complexity, and weather. A typical single-storey extension might take around 8 - 12 weeks. Request a detailed schedule so you know what to expect and when key milestones will be reached.

Do you offer a guarantee for your work? Most Merthyr Tydfil extension builders offer a guarantee or warranty on their work, often between 1 and 10 years depending on the project and materials used. This gives you assurance that any issues will be resolved after completion.

If you still have questions about the professional you are looking to hire, we have a full detailed guide on hiring the right builder here.

FAQ: Common questions about home extensions in Merthyr Tydfil

Can an extension builder in Merthyr Tydfil help with planning permission?

Yes, many extension builders in Merthyr Tydfil can guide you through the planning process. They can help prepare drawings, advise on local requirements, and liaise with your local council to ensure your project meets all necessary regulations.

Can an extension builder in Merthyr Tydfil handle everything from design to construction?

Many Merthyr Tydfil extension builders offer full design-and-build services, managing both the architectural planning and construction stages. Ask your builder whether they can provide a complete package or if you’ll need to hire an architect or designer separately.

Will an extension builder in Merthyr Tydfil help with materials and finishes?

Yes, most extension builders in Merthyr Tydfil can source materials and offer advice on finishes that suit your design and budget. You can also choose to supply certain materials yourself, just make sure this is agreed upon before work starts.