Extension builders in Merthyr Tydfil

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

Easily find verified Merthyr Tydfil Extension Builders. Just post your job to get quotes from MyBuilder's Extension Builders in Merthyr Tydfil.

Select a service

How it works

Post your job for free

Tell us about your job, and we’ll alert suitable tradespeople in your area. It’s simple and free.

Tradespeople respond

Once your job is posted, you’ll get responses from interested tradespeople through the website.

Review profiles and choose

Browse profiles, work history, and feedback, then choose who you wish to share your details with.

Some of our top rated extension builders in Merthyr Tydfil

296 Results

Sort by:

CK Carpentry and Construction
Rating: 5 out of 5
Extension Builder in Merthyr Tydfil
At CK carpentry . We are friendly and reliable tradesmen. We try to ensure only the best service for our customers. We undertake all aspect of carpentry work with a 10 years experience. We have built up a great team of trademen Which allows us to take on all building works. We specialise in 1st and 2nd fix carpentry also end to end refurbishment of apartments, hotels,shop fits. Previously working on new build and commercial projects. We also offer complete kitchen installs from design to fit.
Get in touch
Latest review:
Kitchen Fitting- 20 Aug 2019
Jon is amazing, clearly highly skilled and his experience shone through, he did such a great job of fitting my kitchen. He was extremely patient with me and my kitchen supplier. He went out of his way to ensure I had what I needed to use my kitchen while we waited on other parts to be delivered. He also laid my laminate floor & perfectly hung 4 doors for me. There are one or two tiny bits pending, but to be fair he's waiting on me to decide when I want my other job done, so I know he will sort them out at the same time. I'd never use any other carpenter again. Jon is simply the best.
CDH Contractors Ltd
Rating: 5 out of 5
Extension Builder in Merthyr Tydfil
We are a family run business with over 40 years experience in the construction industry.
Get in touch
Latest review:
CDH Contractors have been amazing throughout our home renovation. They transformed our kitchen beautifully, giving it a fresh new look that we absolutely love. They also made a huge difference in our garden with their landscaping work, creating a space that feels inviting and well designed. The highlight has to be the garden room they built for us — it’s become our peace haven, and we now spend most weekends relaxing there. Their craftsmanship, attention to detail, and professionalism truly stand out. I would highly recommend CDH Contractors to anyone looking for high-quality work. We’ll definitely continue using them as we complete the rest of the renovations in our home.
Trebow Construction
Rating: 5 out of 5
Extension Builder in Merthyr Tydfil
House Renovation Specialist. Extensions. Commercial work.
Get in touch
Latest review:
Restoration & Refurbishment- 23 Nov 2022
Rob worked on a few of my projects. It went quite well. Rob is a lovely guy to work with and a very honest person. I would recommend him.
PPS solutions
New on MyBuilder
Extension Builder in Merthyr Tydfil
We carry all trades , I have been a builder for 30 plus years and very experienced at all aspects of construction.
Get in touch
S&T Haycock Construction
No reviews yet
Extension Builder in Merthyr Tydfil
Family run business with over 40 years experience in the construction industry
Get in touch
Lass groundworks and construction
Rating: 5 out of 5
Extension Builder in Merthyr Tydfil
Driveways patios drainage all aspects of groundworks extensions and landscaping we have a combined experience of 20 years we are here for you the client we try and work to your budget so we won't be beaten on price
Get in touch
Latest review:
Landscaping- 21 Apr 2021
Am happy with the work , the team was very friendly and has good communication skills, I was involved/ informed of the process as the work was carried out. Would highly recommend them to anyone.
BD Building and Landscaping
Rating: 5 out of 5
Extension Builder in Merthyr Tydfil
Hello! My name is Ben, I am a bricklayer with nearly 20 years of experience. I have recently decided to start my own building/landscaping business after working for numerous building companies, and picking up many different skills over the years. I do all aspects of brick/blockwork, patios, general landscaping, fencing etc.
Get in touch
Latest review:
Bricklaying- 25 Apr 2026
Ben did a fantastic job, working through a thunderstorm to complete it on time. He was punctual, tidy, polite and the quality of the job was excellent. Would happily recommend him to others.
Lm concrete solutions
New on MyBuilder
Extension Builder in Merthyr Tydfil
At LM Concrete, we provide high-quality concreting services for domestic and commercial projects of all sizes. From driveways, patios, foundations and concrete slabs to paths, yards, bases and more, we take pride in delivering reliable workmanship and a professional, long-lasting finish. Whether it’s a small residential job or a larger project, we work closely with every customer to ensure the job is completed to a high standard, on time and with attention to detail. ✅ All types of concrete work ✅ Power float ✅ Brush finishes ✅ Patern print ✅ Domestic & commercial ✅ Quality workmanship ✅ Reliable & professional service ✅ Free, no-obligation quotes 📍 Covering South Wales and surrounding areas 📞 Get in touch for your free quote
Get in touch
JN Building Services & Property Development Limited
Rating: 5 out of 5
Extension Builder in Merthyr Tydfil
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, ensuring every job is completed with professionalism, care, and attention to detail. We work alongside a trusted network of fully licensed and insured subcontractors—including skilled builders, electricians, plumbers, carpenters, and other trades. This collaborative model allows us to bring together the right expertise for every project, ensuring compliance, high standards, and efficient project delivery. Whether you're planning to expand your home, invest in property development, or upgrade your living space, JN Building Services is committed to delivering results that are on time, on budget, and built to last. Serving clients throughout South Wales Specialists in new build extensions Learn more at www.jnbuildingservices.wales
Get in touch
Latest review:
Landscaping- 29 Aug 2026
Our patio was a total mess, and I decided to employ Jonathan’s company to replace it. It was a good decision. The work was carried out to our complete satisfaction, and Stuart, Liam, and other lads worked exceptionally hard in boiling hot weather to leave us with a beautiful new patio. All the lads were polite, friendly and cheerful, snd it was a pleasure to make their aquaintanceship. Thank you Johnathan and Co. A perfect job.
Adam Bosley Brickwork and Paving
Rating: 5 out of 5
Extension Builder in Merthyr Tydfil
Hi, My name is Adam I'm honest and hardworking, my work is always to the highest standards, I always show up for work on time, I leave the site clean & tidy overnight and when finished, I never take on work that is beyond my capabilties and I stick to my quotes and never ask for more money.
Get in touch
Latest review:
Bricklaying- 9 Dec 2017
Excellent job done, all within a week of first contact. Great communications and reliable.
D & M Jones Developers
Rating: 5 out of 5
Extension Builder in Merthyr Tydfil
D & M Jones is a building company that helps you with all aspects of constructions. Our aim is to be recognised as one of the best building firms in the area. To ensure this we take our quality of work and customer service very seriously.Our team is skilled and delivers work that is of the highest standards and we pride ourselves on our quick turnaround time. Get in touch with one our experts for more information on how we can help you.
Get in touch
Latest review:
Groundwork & Foundations- 15 May 2017
Absolutely professionally done. That is the right company that we were looking for - correct, in a good price and friendly staff. We recommend it!
Shaun Jones
No reviews yet
Extension Builder in Merthyr Tydfil
I’m a dryliner but over the years of work I have undertaken multiple jobs. So I’m basically a handy man. And can adapt to most work environments. Also worked for Anglian fitting facials gutters and soffits to a high standard
Get in touch
M.G bricklaying & landscaping
Rating: 5 out of 5
Extension Builder in Merthyr Tydfil
Mg building and landscaping Extensions/conservatory/orangeries/patios porcelain/roofing/and general building work 20 years experience
Get in touch
Latest review:
Extensions- 21 Aug 2024
We can’t thank Matthew and the team enough for the build. Great communication throughout and Matthew’s experience and suggestions were welcomed during the initial planning, allowing us to make informed decisions on the final product. Where obstacles were met, they were dealt with swiftly allowing for a much less stressful experience. Our home is now perfect for our growing family as we are able to utilize so much more space.
Urban Elegance
Rating: 5 out of 5
Extension Builder in Merthyr Tydfil
We are an experienced building company situated in the south wales area that covers all aspects of building and renovation work with over 18 years experience in the construction industry our number one priority is customer satisfaction in doing the highest quality work every time weather its a leaky tap to a full extension. We also offer a design and build service working along side our trusted architect and structural engineer.
Get in touch
Latest review:
Extensions- 31 Jul 2017
We can't recommend Neil and his team highly enough. From start to finish the level of communication, customer service and quality of work has been excellent. Neil and the team take on your house knowing it is a home and they all treat it with care and respect, we've never seen such a tidy work place! The whole approach is centred around the customer's needs and Neil was always happy to find solutions to any issue and guide us with his expertise and experience. We feel very lucky that we found Urban Elegance to take on our project and the end result cannot be faulted. We are very grateful!
Evanstone Building & Carpentry
Rating: 5 out of 5
Extension Builder in Merthyr Tydfil
Professional quality builders with over 30 years experience. We have a dedicated team of qualified tradesmen. Extensions, Refurbs, Carpentry, Roofing, Fencing, bricklaying, bathrooms, Kitchens.
Get in touch
Latest review:
Single storey rear extension, open plan kitchen/diner and large kitchen fitting. Mat and the guys at Evanstone created a fantastic open plan living space for us. No shortage of ideas for the work itself, extremely high standard of workmanship, project management and finish. Would highly recommend.
Lee Hallam & sons
No reviews yet
Extension Builder in Merthyr Tydfil
I am a builder with 34 years in the trade time served bricklayer when I was 16 and have always done everything in the building trade have my two sons working for me as well as builders we done stonework caswell
Get in touch

Top rated Extension Builders

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

Quality screening

Easily find verified local tradespeople. Just post your job to get quotes from tradespeople near you across the UK.

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.