Extension builders in Porth

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 5 (3 reviews)

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

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 Porth

392 Results

Sort by:

Walsh carpentry
No reviews yet
Extension Builder in Porth
Walsh carpentry and building is a cardiff based company covering all aspects of carpentry and building work to a high standard.
Get in touch
A design in mind carpentry and construction
No reviews yet
Extension Builder in Porth
All aspects of carpentry and construction
Get in touch
RJD Home Improvements
Rating: 4.9 out of 5
Extension Builder in Porth
General building, roofing, landscaping, extensions, internal and external plastering including EWI system, PVC windows doors facia boards, guttering. CERTASS registered installer Membership number 24-1369
Get in touch
Latest review:
Extensions- 29 Sep 2025
Our job started out as a small kitchen extension and shower/utility room but grew to also include fitting of a new kitchen, new kitchen ceiling, new double glazed windows to back of house, new garden wall approximately 50ft long and 5ft high and insulation to two internal bedroom walls. Rob and his team are extremely versatile and very approachable. I would certainly recommend them and we are hoping to have some more double glazing work done in the near future.
Silkwood construction
No reviews yet
Extension Builder in Porth
Hi I've been in the building business for about 35 years I have vast experience and knowledge about the building industry we done a lot of exciting work including extensions kichen fitting bathrooms and painting and decorating from small rooms to 2 story extensions
Get in touch
dns property development limited
No reviews yet
Extension Builder in Porth
At DNS Property Development, we specialise in high-quality home renovations, extensions, property refurbishments, kitchens, bathrooms, and complete home transformations across South Wales. We understand that choosing the right contractor is a big decision, so we pride ourselves on being reliable, honest, and delivering workmanship to the highest standard. From the initial consultation through to project completion, we work closely with our customers to ensure every project is completed on time, within budget, and to the highest quality. Whether you’re planning a single-room renovation, a house extension, or a full property refurbishment, we’d be delighted to discuss your ideas and provide a free, no-obligation quotation. Thank you for considering DNS Property Development. We look forward to helping bring your vision to life.
Get in touch
Archstone Masonry Limited
No reviews yet
Extension Builder in Porth
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.
Get in touch
Craig
No reviews yet
Extension Builder in Porth
Hello my name is craig, I'm a fully qualified plasterer/general builder taking on all aspects of building I've been in the industry for over 10 years now and gained a vast amount of experience in many fields of work. I value my reputation highly and will always work to the highest standard making sure your job gets done the right way on time at a reasonable price.
Get in touch
Carl Howard
No reviews yet
Extension Builder in Porth
I'm a bricklayer with over 25years experience in all aspects of bricklaying. I undertake work from new builds renovation to patios and garden walls. All my work is of the highest standard and the workplace is left clean and tidy after the completion of the job. As you can see i am new to this site but would be able to provide you with many happy customers feedback.
Get in touch
Angelo Colarusso
No reviews yet
Extension Builder in Porth
I am an extremly fussy and meticulous builder with over 40 years in the building trade having built houses satisfied the local authorities when Grant works needed competent and proficient builders with a wide and varied field of experience at present I am completing a garage conversion and extention which has more than met my customers needs. I wish to progress my company with your help this why I am applying to your your goodselves.
Get in touch
I &S Project House builders
No reviews yet
Extension Builder in Porth
General Builder with over 25 years experience that include everything from kitchen and bathroom fitting to extensions. Wide range of skills: Plastering & External render Tilling Carpentry Loft room conversion and much more
Get in touch
Ks plastering
New on MyBuilder
Extension Builder in Porth
High level of Plasyering and render finish flat clean
Get in touch
Jenkinsons brickwork & building
Rating: 5 out of 5
Extension Builder in Porth
JENKINSONS BRICKWORK & BUILDING LTD Hi there Craig here from jenkinsons brickwork & building. Here at Jenkinsons we undertake all types of building work but specialise in new builds and extensions. We always go that extra mile to make sure that our customer is more than happy with the service that we provide as seen in our 5 star review rating. Please don’t hesitate to get in touch with us for a free no obligation quote.
Get in touch
Latest review:
Bricklaying- 19 Jun 2024
Despite bad weather the work went very well. The brickwork was of a high standard and Craig was very reliable. He was contracted to do the walls to roof level but helped with recommending other trades and supplying valuable advice about other aspects of the work and sourcing materials. Addition work was a knock through to an existing wall and installation of cavity lead flashing and trays for the roof tie in I would have no hesitation in recommending Craig and would use him for any other work that I would require in the future
S W Rendering ltd
No reviews yet
Extension Builder in Porth
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.
Get in touch
Thomas westall contractor
No reviews yet
Extension Builder in Porth
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.
Get in touch
Signature carpentry limited
No reviews yet
Extension Builder in Porth
With over 20 years in construction from commercial to residential experience We have a full team of qualified professionals tradesmen With a very high standard and professional attitude that we pride ourselves on Our main achievement is making the experience of your project as easy and stress free as possible and completed to a very high standard
Get in touch
Daveydaw builders
No reviews yet
Extension Builder in Porth
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
Get in touch

Top rated Extension Builders

Our Extension Builders in Porth, are rated 5 out of 5 based on 3 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 Porth?

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

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

What are the hourly rates of extension builders in Porth?

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

Find extension builders in Porth with MyBuilder

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

Step 2: Compare different extension builders in Porth

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

Step 3: Hire Porth extension builders with confidence

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

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

What to ask a Porth extension builder before hiring?

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

An extension builder in Porth 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 Porth 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 Porth?

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 Porth 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 Porth 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 Porth

Can an extension builder in Porth help with planning permission?

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

Many Porth 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 Porth help with materials and finishes?

Yes, most extension builders in Porth 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.