Extension Builders in Merthyr Tydfil

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 5 (1 reviews)

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Some of our top rated extension builders in Merthyr Tydfil

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A.Morgan Groundworkers Ltd
Rating: 5 out of 5
Extension Builder in Merthyr Tydfil
We are a Groundworks company with more than 30 years experience in all aspects of groundwork, fully insured with all the relevant certificates and licences
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Latest review:
Groundwork & Foundations- 2 Aug 2026
I can’t recommend Alan highly enough. He completely transformed our garden in just a day and a half, using a mini digger and working alongside his labourer to level the entire area. From start to finish, Alan was hardworking, professional, and clearly knew exactly what he was doing. The quality of the groundwork is outstanding – the garden is now perfectly level and ready for the next stage of our project. He worked efficiently, didn’t cut any corners, and kept everything tidy throughout. I was also amazed that he managed to get his mini digger through what felt like the smallest gap imaginable. I’m still convinced he must have folded it in half to get it through! If you’re looking for someone reliable, skilled, and who genuinely takes pride in their work, Alan is the person to call. Fantastic service, excellent value for money, and I’d happily recommend him to anyone needing groundwork or landscaping.
Rd brickwork
Rating: 5 out of 5
Extension Builder in Merthyr Tydfil
Local bricklayer providing work for the following Garden walls Patios Extension Ground works Drainage Steps
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Latest review:
Bricklaying- 28 May 2022
Clean, polite, turned up on time, good standard of work. Would recommend.
TTC Construction
Rating: 5 out of 5
Extension Builder in Merthyr Tydfil
I am a versatile and experienced tradesman, taking pride in being a clean, tidy, reliable and a trustworthy professional. I have team of experienced tradesmen that I can rely on and trust. I project managed jobs from start to finsh and enjoy working closely with cliants. Please look at my references.
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Latest review:
Extensions- 25 Sep 2014
Tony is possibly the best option you have. He is genuine, trustworthy, a man of his word and prices competitively. Even if he isn't the cheapest quote you get you should still try to employ him as he won't let you down. He's been doing this sort of thing since he was a young lad, and even though he's still relatively young in the scheme of things do not be fooled, he knows his stuff. It has been an absolute pleasure having Tony do our extension, and I am very happy to have anyone over who wants to take a look to discuss the quality of his work before proceeding with him. And no, this is not a plant! I am just a very happy customer.
Sc building and landscaping
Rating: 5 out of 5
Extension Builder in Merthyr Tydfil
Hiya my name is Shayne,I’m running a family run business and have also been in the building trade 20years,I take great pride in all the work we do from digging footings to final finshes we can do it all there’s no need for any one else.i work in a 30 mile radius from Blackwood.
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Latest review:
Fencing- 31 Oct 2025
Excellent service, had the job competed the following morning to a hire standard and responsible price would highly recommend
DMS Carpentry and Build
Rating: 5 out of 5
Extension Builder in Merthyr Tydfil
I am a fully qualified carpenter. With 20 plus years experience in all the building industry. Great customer service.
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Latest review:
Windows & Doors (Wooden)- 2 Jan 2025
Excellent services from DMS carpentry. I would highly recommend.
Lionstone Group LTD.
Rating: 5 out of 5
Extension Builder in Merthyr Tydfil
With over two decades of professional experience in the building and construction industry, Lionstone Group LTD. deliver professional and specialist services in all aspects of building and construction, and the civils industry. Here are the main things we cover: • Drainage • Foundations • Concrete work/finishing • Landscaping (hard & soft) • Brickwork/Blockwork • Feature walls/designs • Slabbing/patios • Block paving • Fencing • New builds • Extensions & Garages • Roofing • Scaffolding • Commercial projects • Finishing work • Driveways • Renovations • Tarmacing • Kerbing • Services and utilities •Please feel free to call if you have any inquiries about any work you need carried out whether listed above or not. We also offer FREE QUOTES!
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Latest review:
Landscaping- 1 Dec 2020
Arron and his business partner Mark were extremely professional in their approach, their work was "spot on". Customer Service was important to them and was delivered to a high standard. They were flexible too and willingly did those little extras that always seem to crop up. We'd not come across them before so were delighted with the above. Of course we would recommend them.
Swift Home and Landscaping
Rating: 4.9 out of 5
Extension Builder in Merthyr Tydfil
Welcome to swift home and landscaping. With over 15 years building experience we are able to undertake any aspects of work big or small. Our main focus is to help people that need work completed at very competitive prices and most of all to a extremely high standard
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Latest review:
Hard Flooring- 30 Nov 2020
Good Communication, Good job carried out on time as promised and within the budget required. I would not hesitate to use Mike again,
S C J CONSTRUCTION
Rating: 4.9 out of 5
Extension Builder in Merthyr Tydfil
WE ALSO HIRE OUT TOOLS AND PLANT E.G DIGGERS, DUMPERS AND TIPPERS
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Latest review:
Extensions- 14 May 2020
Steve is without doubt one of the best builders around. He delivered excellent work and provided great advice. I will be using Steve for all future works that I have planned. He is a builder you can trust which is very difficult to find!
KVC Carpentry and Building
Rating: 5 out of 5
Extension Builder in Merthyr Tydfil
KVC Carpentry & Building has a wide range of knowledge in all areas of the building trade. We offer an all round building service so you don't have to organise different trades. We cater from the smallest of jobs to the largest of projects such as extensions. We work with you every step of the way.
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Latest review:
Tiling- 10 Apr 2016
Kieran did an awesome job of both enlarging my loft hatch, fitting a loft ladder and both tiling and flooring my bathroom. He is super helpful and a really nice guy who will always do his utmost to make sure the client is happy. Kieran has also done work for two of my neighbours who can't speak highly enough of his work. I can recommend KVC 100% and will definitely be using Kieran again in the future!
Pro finish building and plastering Limited
Rating: 4.8 out of 5
Extension Builder in Merthyr Tydfil
Pro finish home improvements specialist. We are a company that strive to deliver a quality service. We are fully qualified and insured,with vast knowledge and experience.established ,family run building and refurbishment specialist. You will find our team friendly and personable,and our business is Based on punctuality and reliability. Our team work hard and don't cut any corners,meaning your project is delivered on time and in budget.
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Latest review:
Plastering- 14 May 2024
I was glad I chose this company to do the work for me they did a great job for me plastering my living room excellent Finnish on the plaster they were very clean, and they covered up all my furniture in the room even my wooden floors, a great bunch of people I'm very happy . thank guys
Brickfitz ltd
No reviews yet
Extension Builder in Merthyr Tydfil
Hi I’m Rhys the director of brickfitz Ltd based in Merthyr Tydfil, we undertake all aspects of bricklaying works not only in the local area but have travelled as far as Somerset,Gloucester and beyond. I’ve been a bricklayer for 20+ years with a wealth of knowledge in all aspects of bricklaying and Groundworks, from building houses for major house builders on site, building home extension, boundary and retaining walls, patios etc… I’m very passionate about my job and take a lot of pride in my work to achieve the best quality and to have very good results leaving customers satisfied.
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Wjp brickwork
Rating: 5 out of 5
Extension Builder in Merthyr Tydfil
Hard working young man who is dedicated to making every job the highest functional and aesthetic standard possible. The building trade has enabled me to have the following skills and knowledge on all areas in the trade. Ive worked on many detailed jobs and large scale sites throughout the UK and Australia We offer all aspects of brickwork, blockwork and stone work •brickwork •blockwork •stonework •patios •repair work All you building needs
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Latest review:
Bricklaying- 11 Apr 2026
Wesley and his team did an excellent job rebuilding a garden wall for us. The workmanship is of an excellent standard, Wesley was extremely professional, approachable and helpful at every stage of the process and provided great advice and problem solving ideas for us. The workmen were polite and efficient and left things clean and tidy. We would definitely use again and recommend this company.
Cosy construction
Rating: 5 out of 5
Extension Builder in Merthyr Tydfil
Hi all I've got 30 years experience in the building industry.im a bricklayer by trade.i cover resin drives,patios,extentions,fencing,house renovations, painting,what ever comes my way
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Latest review:
Driveways (Tarmac Surface)- 12 Jan 2026
Excellent work, they done a amazing job on drive way couldn't be happier, the whole team were great I'd highly recommend using them.
JCW Design & Build Ltd
Rating: 4.8 out of 5
Extension Builder in Merthyr Tydfil
Planning and building regulations drawings and applications Most aspects of building work undertaken Extension specialist's Hardscaping
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Latest review:
Extensions- 18 Apr 2019
Justin and his team were absolutely fantastic. from quote to finish, Justin knew exactly what had to be done and communicated with me all the way through our double extension. it wasn't stressful as I knew the job was with the right people and have recommended Justin to friends and family. 100% spot on! Justin will be doing our garden in the near future too. I wouldn't trust anyone else with building work
Geraint Jones
No reviews yet
Extension Builder in Merthyr Tydfil
Hi, my name is Geraint. I'm a tradesman with 35 years experience, I believe in quality work with a fair price for the client. I can cover, new builds, extensions, patios, garden walls and drainage. I have lots of pictures of my work for you to see. Hope to hear ftpm you soon. Many thanks Geraint
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Thomas roofing and building
No reviews yet
Extension Builder in Merthyr Tydfil
I’ve been roofing and building for 24 years and started out working for my father's company after leaving school. 8 years ago, I ventured out and started my own roofing and building company. I’ve covered a vast range of different roofs and building work and can confidently use various materials. My company offers a wide variety of services, including roofing, extensions, internal renovations, garden work including patios and fencing, bathrooms, kitchens and many other services. We are also certified resin driveway and path installers. I have a large portfolio of previous jobs to show customers as I take a lot of pride in what I offer and love sharing our quality workmanship.
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Top rated Extension Builders

Our Extension Builders in Merthyr Tydfil, are rated 5 out of 5 based on 1 review 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.