Extension builders in Cardiff

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

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

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Some of our top rated extension builders in Cardiff

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CD BRICKWORK
New on MyBuilder
Extension Builder in Cardiff
Cd brickwork and be trading for 5 years now…we are looking at taking on extra work for our ever growing company We have over 60 years experience between our workforce We are experienced in all aspects of bricking from brickwork blockwork full extension builds and many more
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henrys plumbing company
No reviews yet
Extension Builder in Cardiff
Hi, I’m Henry from Henry’s Plumbing Company. With over 11 years of plumbing experience, we're excited to introduce our services on MyBuilder. We specialize in same-day plumbing appointments, and no job is too big or too small for our skilled team of 10 tradespeople. We're also experts in handling insurance-related work. Looking forward to meeting new customers and helping with all your plumbing needs!
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Ks plastering
New on MyBuilder
Extension Builder in Cardiff
High level of Plasyering and render finish flat clean
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Greenways Grounds Maintenance
No reviews yet
Extension Builder in Cardiff
Here at Greenways , our pictures and reviews speak for themselves! We carry out works from Qualified designing to implementation. All grounds works , building, landscaping , fencing , driveways and buildings. Please check out our website and get in touch today!
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SB Construction Services
No reviews yet
Extension Builder in Cardiff
With a robust nine years actively immersed in the trade, my professional journey has been defined by a diverse array of projects and a steadfast commitment to quality craftsmanship. Throughout this period, I have successfully undertaken and completed a wide spectrum of transformations, ranging from comprehensive HMO developments and intricate garage conversions to extensive full-house refurbishments that breathe new life into existing properties. My expertise also extends to the meticulous fitting of high-end kitchens and bespoke bathrooms, ensuring both optimal functionality and exquisite finishes. This broad experience, gained across various locations and client specifications, has honed my problem-solving abilities and adaptability, establishing a proven track record of delivering exceptional results on every assignment.
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C Thomas Building Services
No reviews yet
Extension Builder in Cardiff
We are a highly skilled team of general builders specialising in refurbishment/renovations, conversions, kitchens, bathrooms and extensions. I have 20 years experience as a general builder with extensive knowledge of all aspects of construction. All our team members are NVQ City and guild qualified in various trades to ensure everything is carried out to a very high standard. Great care is taken no matter how big or small the job may be, EVERYTHING is built from the heart, not just the hands.
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L.G CONTRACTORS SOUTH WALES LTD
No reviews yet
Extension Builder in Cardiff
We are a local building and roofing contractor .We are a Ltd Company and Construction Line accredited. We carry out local authority and private work . We aim to make any work as stress free as possible by ensuring we communicate effectively with clients .
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Jersey Developments
Rating: 5 out of 5
Extension Builder in Cardiff
Development company based in Bristol who specialise in new builds, barn conversions, loft conversions, extensions and ALL aspects of carpentry. We are a company run by two business partners who are friends from school. We are both happy to talk and advise on whatever your needs with a free quote.
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Latest review:
Conversions - General- 27 Oct 2020
Both Tom & Del (Jersey Developments) were great to work with throughout the entire process of my Garage conversion. They were on time, within the budget, and listened to my needs. Excellent communication, great attention to detail, and they don't cut corners. Most of all- job was completed within the time frame given
Shane Davies
No reviews yet
Extension Builder in Cardiff
Time served tradesmen 30 years experience family run business quality competitive cost effective service fully insured and guaranteed.
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BDS building and developments
New on MyBuilder
Extension Builder in Cardiff
With over 20 years of experience in the building trade, I provide reliable, high-quality workmanship with a focus on attention to detail and customer satisfaction. From extensions and renovations to carpentry and general building work, I take pride in delivering a professional service from start to finish. If you’re looking for a trusted, experienced builder who takes pride in their work, get in touch for a free, no-obligation quote.
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Pier developments
No reviews yet
Extension Builder in Cardiff
Here at Pier Developments we are a carpentry and build specialist, we have over 40 years experience in the trade between us.
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Sustain Building Services
No reviews yet
Extension Builder in Cardiff
We specialise in brickwork and patios but also do complete extensions, new builds and insurance work.
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M shave construction
No reviews yet
Extension Builder in Cardiff
Hi I’m marc and I have 25 years of Experience of being self employed as construction company. I have Experience in general building from extensions to new builds, civils, Hard and soft landscapes including paving driveways and patios. I have also worked as pm on large civil jobs all over the world. We strive to give the customer best quality and performance we can for the best affordable prices. All work is fully guaranteed.
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Eyles Building and Plastering services
Rating: 5 out of 5
Extension Builder in Cardiff
I am a self employed bricklayer and plasterer with 14 years experience, I have city and guilds nvq advanced level 3 qualifications and a cscs gold card holder and I am fully insured. I have also worked for a large building company in Bristol covering all aspects of building work and have all the skills as a multi trade and experienced builder, I work to a very high standard and attention to detail and cleanleness on work under taken. I take my job very seriously and aim to do the best job.
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Latest review:
Very pleased with our finished extension. Originally we were just getting luke to do the shell of the extension but after seeing his work and professionalism we got him to do the inside aswell. We were very happy from start to finish. They are unlike other builders that come and go as they please. Luke stuck to his time scale and stayed on the job from start to finish. Would highly recommend .
DC Construct
No reviews yet
Extension Builder in Cardiff
Undertake all aspects of building works, specialising in carpentry and joinery.
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Daveydaw builders
No reviews yet
Extension Builder in Cardiff
My name is davey daw I personal have 27 years experience in the construction bussiness with 15 years running my own company I am a fully qualified bricklayer In my experience keeping clients updated with the process and keeping regular times arriving on site and keeping site clean is a must
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Top rated Extension Builders

Our Extension Builders in Cardiff, 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 Cardiff?

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 Cardiff 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 Cardiff who are available and interested can respond to your post.

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

What are the hourly rates of extension builders in Cardiff?

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

Find extension builders in Cardiff with MyBuilder

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

Step 2: Compare different extension builders in Cardiff

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

Step 3: Hire Cardiff extension builders with confidence

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

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

What to ask a Cardiff extension builder before hiring?

Before hiring an extension builder in Cardiff or extension building company in Cardiff, 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 Cardiff?

An extension builder in Cardiff 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 Cardiff 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 Cardiff?

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 Cardiff 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 Cardiff 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 Cardiff

Can an extension builder in Cardiff help with planning permission?

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

Many Cardiff 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 Cardiff help with materials and finishes?

Yes, most extension builders in Cardiff 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.