Extension Builders in South Glamorgan

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

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

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 South Glamorgan

404 Results

Sort by:

Webb's Construction
Rating: 5 out of 5
Extension Builder in South Glamorgan
At Webb’s Construction, we bring two decades of craftsmanship to every project. Based in the heart of Wales, we specialise in block work, bricklaying, driveways, fencing, and a wide range of bespoke construction services tailored to your needs. Whether it's laying the foundation for a new build or putting the finishing touches on a stylish outdoor space, our experienced team combines skill, reliability, and a commitment to quality that stands the test of time. From residential to commercial work, we take pride in delivering results that are built to last. We can provide a no obligation quote throughout south Wales.
Get in touch
Latest review:
Landscaping- 22 Apr 2026
We couldn’t be happier with the work Webb’s Construction did on our front patio. From the very first conversation, they were professional, attentive, and genuinely invested in making sure the end result matched our vision. The team brought a great balance of expertise and creativity, offering helpful suggestions on layout, materials, and finishing touches that really elevated the final design. Their attention to detail was outstanding—everything from the groundwork to the final finish was done with precision and care. The transformation has completely changed the look of the front of our house. What was once a plain, unused space is now a beautiful, welcoming patio that we’re proud of and actually use every day. On top of the quality of their work, they were reliable, tidy, and respectful throughout the whole process—turning up when they said they would and keeping everything organised and clean. If you’re looking for a team that delivers, I would highly recommend Webb’s construction
Hooley Builders
No reviews yet
Extension Builder in South Glamorgan
We at Hooley builders are a team of experienced tradesmen covering everything from general building/maintenance to landscaping, home improvements and new builds. Renowned for our reliability and attention to detail. We take pride in our excellent reputation and continue to provide our customers with the best quality and standards.
Get in touch
Scott Taylor
Rating: 5 out of 5
Extension Builder in South Glamorgan
Hi, I am a self-employed carpenter with 10+ years of experience in my trade. i offer a friendly, polite and reliable service with a good attention to detail. My aim is to meet the needs of the job, leaving you the customer with an excellent standard of finish. Thank you.
Get in touch
Latest review:
Joinery & Cabinet Making- 16 Jan 2026
Fantastic job. Very courteous, prompt and very professional. Would definitely use Scott again
Priority Carpentry and Building
Rating: 5 out of 5
Extension Builder in South Glamorgan
An established business offering all aspects of carpentry & general maintenance in the Cardiff and South Wales area we are a professional,reliable and friendly service. All of our work is carried out to the highest standard by fully qualified carpenters and builders and all work is fully guaranteed.
Get in touch
Latest review:
Carpentry- 25 Mar 2018
Job was to replace bowing joists and level ceiling, responded very quick and would defiantly hire again
Jc construction sw ltd
Rating: 5 out of 5
Extension Builder in South Glamorgan
I am a small construction company that undertakes all aspects of building work. Kitchens, bathrooms, extensions, alterations , plastering, rendering, first and second fix carpentry
Get in touch
Latest review:
Carpentry- 23 Nov 2023
Engaged Joe to fit an attic staircase at our property. Have to say that the experience was exceptional. Reliable, punctual reasonably priced and above all did an amazing job for us. Cannot recommend him highly enough.
LBP PROPERTY DEVELOPMENTS LTD
No reviews yet
Extension Builder in South Glamorgan
Welcome to LBP property development/Prohome developments – Quality Craftsmanship You Can Trust! With 23 years of experience in the building and property development industry, we specialize in delivering high-quality construction, renovations, and property improvements tailored to your needs. Whether it’s brickwork, garden walls, home extensions, or full-scale property refurbishments, we take pride in our attention to detail, reliability, and professional approach. We believe in transparent pricing, clear communication, and exceptional workmanship, ensuring every project is completed to the highest standard. Get in touch today for a free consultation, and let’s bring your vision to life!
Get in touch
Urban craft property maintenance
Rating: 3 out of 5
Extension Builder in South Glamorgan
Based in South Wales, Urban Craft provides expert property maintenance services to commercial clients, homeowners, and landlords. We specialise in landscaping, drainage solutions and general building work, offering reliable, high-quality service tailored to each property’s needs. Whether it’s improving outdoor spaces, resolving drainage issues, or handling structural repairs, our experienced team is committed to keeping your property in top condition, all year round.
Get in touch
Latest review:
Landscaping- 21 May 2026
Came to take measurements but never followed up with an actual quote. Highly disappointing. I find this unprofessional.
RDL Building Services Ltd
No reviews yet
Extension Builder in South Glamorgan
RDL 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 completion leaving our clients without the stress of arranging planning, building regs contractors etc. Based in Fairwater Cardiff.
Get in touch
Urban Elegance
Rating: 5 out of 5
Extension Builder in South Glamorgan
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!
Revamp and Renew Building Solutions
Rating: 5 out of 5
Extension Builder in South Glamorgan
Hi I'm a local builder and landscaper I do anything from laying patios to plumbing no job to big or small reliable and always shows up till the job is completed I work in a 2 man gang with a vast amount of knowledge and not out to rip any1 off I'll will do the jobs as cheap as I can because I know times are hard at the moment and will shop around for the best deal I can get thanks for reading
Get in touch
Latest review:
Groundwork & Foundations- 6 Mar 2024
Impressed with a job that looked better than we ever thought - well designed and well executed. Aaron had to contend with virtually every type of weather but fought on to the end. Would recommend him without hesitation - excellent job and excellent price👍
RME Building Services Ltd
No reviews yet
Extension Builder in South Glamorgan
RME Building & Electrical Services Ltd. We are Building and Electrical contractors based in the S.Wales area, with over 18 years in the construction industry. In this time we have built up a great client base and a great reputation. We are fully certified & insured and hold current Safecontractor & Constructionline We deal with every aspect of your project from start to finish. We work closely with all our professional and highly skilled contractors all qualified in their own trades.
Get in touch
Chris Bilton Building and Heating
Rating: 4.9 out of 5
Extension Builder in South Glamorgan
My name is Chris, my business is family run and care is taken on every project to ensure customer satisfaction. I provide a full service experience and am flexible in my approach. I work closely with customers to reach their goals. We have two sides to the business, the building side which covers all aspects of Building work from extensions to renovation and the heating side which covers everything associated with log burners, fires & fireplaces. Based in Caerphilly.
Get in touch
Latest review:
Fireplaces & Flues- 15 Apr 2026
Chris was responsive and provided a detailed and competitive quote for the work that needed doing (as well as explaining what we actually needed - three pots, one breather cowl and two solid fuel cowls). Communication on the day was also excellent and the work was completed to a very high standard. We discussed log burners whilst he was here and he returned just over a week later to install one for us, which we are thrilled with. In addition to installing the log burner, Chris knocked out and made good the fireplace for the burner, and cleared our very blocked chimney stack in order to fit the flue. Again, excellent work which was competitively priced. We also batted ideas around for some bigger building work, and won't hesitate to call Chris once we're in a position to proceed. Very grateful Chris took the time to listen to our ideas and advise what would be possible. Extremely knowledgeable and clearly takes pride in his work. Can't recommend highly enough!
Precision Carpentry and Building
Rating: 5 out of 5
Extension Builder in South Glamorgan
All aspects of Carpentry and Building work undertaken. -Internal to external Carpentry Specialists. -Loft Conversions -Flat Roofs, EPDM -Fascia and soffit -Dry lining -Media Walls -Glass Balustrades -Stair case renewals and many more..
Get in touch
Latest review:
Loft Conversion- 26 Apr 2024
Used Precision Carpentry for our loft conversion. They did a fantastic job, absolutely cannot fault them. Kept us updated all the way through and can tell they really take pride in their work. Would 100% recommend them to anyone.
Pfconstruction
Rating: 5 out of 5
Extension Builder in South Glamorgan
Over 30 years experience in the industry, bricklayer is my trade but can put my hand to most trades. Ive run jobs from small extensions to 86 bedroom nursing homes. All of my work is to the highest quality guaranteed.
Get in touch
Latest review:
Bricklaying- 26 Sep 2024
Paul constructed a set of concrete steps and platform on the side of my house. The quality of work was excellent. I highly recommend Paul and will have him back for future projects. Many thanks Paul!
Kieran McConnachie
No reviews yet
Extension Builder in South Glamorgan
Hi, 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 fitting, plastering, painting & decorating, etc. All work is taken with pride and attention to detail, clean and in line with health and safety protocols. We have no doubt you will be happy with our work. Thanks.
Get in touch
D.E..C
No reviews yet
Extension Builder in South Glamorgan
I have been in the business 19 years. Our company has a number of tradesmen from bricklayers, carpenters, plumbers , electricians, roofers right through to finishing tradesmen such as painters. Our aim is high and with a great work ethic we want to give our customers the best standard of work and with a fantastic finish.
Get in touch

Top rated Extension Builders

Our Extension Builders in South Glamorgan, are rated 5 out of 5 based on 5 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 South Glamorgan?

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 South Glamorgan 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 South Glamorgan who are available and interested can respond to your post.

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

What are the hourly rates of extension builders in South Glamorgan?

Before getting started with your extension project, it’s important to have a clear budget in place. On average, extension builders in South Glamorgan 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 South Glamorgan extension builders near you on MyBuilder. This allows you to compare what each quote covers and how much your South Glamorgan home extension project is likely to cost.

Find extension builders in South Glamorgan with MyBuilder

Hiring the right extension builder in South Glamorgan 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 South Glamorgan extension builders. Once your job is live, we’ll share it with home extension builders in South Glamorgan who can express their interest.

Step 2: Compare different extension builders in South Glamorgan

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

Step 3: Hire South Glamorgan extension builders with confidence

After gathering all the information and quotes from your chosen home extension builders in South Glamorgan, 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.

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

What to ask a South Glamorgan extension builder before hiring?

Before hiring an extension builder in South Glamorgan or extension building company in South Glamorgan, 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 South Glamorgan?

An extension builder in South Glamorgan 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 South Glamorgan 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 South Glamorgan?

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 South Glamorgan 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 South Glamorgan 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 South Glamorgan

Can an extension builder in South Glamorgan help with planning permission?

Yes, many extension builders in South Glamorgan 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 South Glamorgan handle everything from design to construction?

Many South Glamorgan 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 South Glamorgan help with materials and finishes?

Yes, most extension builders in South Glamorgan 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.