Extension Builders in Porthmadog

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Some of our top rated extension builders in Porthmadog

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C JONES BRICKLAYER
Rating: 5 out of 5
Extension Builder in Porthmadog
Excellent brickwork and block work reaching to a high quality and standard. Our prices are reasonable, not to high and we can give a years guarantee on every job we do, from building a garden wall to building a house.
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Latest review:
Wow I left this a bit late - but the work was excellent. A conservation project very well done. More than happy with the finish.
GB Operations (Gwynedd) Limited
Rating: 5 out of 5
Extension Builder in Porthmadog
Gwynedd Builders is a successful building company established in North Wales. With our dedicated and skilled team every client can be assured of receiving a structured well organised and professional service with the highest standard of work.
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Latest review:
The work is ongoing I have some holiday cottages and he has done a lot of work plumbing plastering and restoring. He started off by doing a small plastering job and the work has snowballed from there. He is a good tidy worker I am pleased with his work and I can highly recommend him.
D Ratcliffe Building/Property Maintenance
Rating: 5 out of 5
Extension Builder in Porthmadog
Hi I’m a 51 year old multi trader, been in the business for over 30 years , experience in the building trade include all aspects of construction, But the main subject I focus on is plastering /kitchen fitting and interior design ,I do most of the first fix electrical work myself and all of the plumbing including radiator removal and re fit , electrical works completed by certified by qualified electrician , also all Joinary work undertaken ie stu wall building door hanging skirting and architrave I also modified and bring old wood/Upvc conservatories up to date mainly removal of old poly carbon /glass roof with fully insulated rubber roof with roof lights in making your old conservatory usable all year round
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Latest review:
Daniel made an excellent job of fitting my Howdens kitchen units for me. He is experienced, hard working and conscientious and can turn his hand to almost any job. It took a little longer than estimated but was still completed for a reasonable price. He even gave me some free eggs from his own chickens !
Aron Lloyd Construction and Civil Engineering
Rating: 4.6 out of 5
Extension Builder in Porthmadog
3 years trading now as A Lloyd construction Ltd, 9 years of very good experience in construction and civil engineering. Previous jobs include warehouse refurbishment, all aspects of construction, groundwork and civil engineering taken site managers course level 3 first aid at work ,all plant tickets any sizes!
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Latest review:
Groundwork & Foundations- 26 Sep 2024
Very helpful, considerate and thoughtful. Job completed to a very high standard, always available on phone. Would recommend Aron and his team to everyone.
G Owen Agri & Plant Services
Rating: 4.8 out of 5
Extension Builder in Porthmadog
Groundworks Fencing Landscaping Digger and driver Septic tanks Drainage Concrete
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Latest review:
Groundwork & Foundations- 24 Jan 2026
Good communication & done & good job.
C Garlick Building Contractors
Rating: 5 out of 5
Extension Builder in Porthmadog
With 15 years of experience in the trade, we take great pride in our work. Should it be big or small, we are always here to give good friendly advice.
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Latest review:
Landscaping- 3 Aug 2015
Very happy with the decking. Would definitely recommend. Many thanks.
Dafydd Lloyd
Rating: 5 out of 5
Extension Builder in Porthmadog
Dafydd Lloyd provides a professional service, quality workmanship and value for money. Our team has the flexibility and experience to undertake projects ranging from minor repairs and maintenance to major refurbishments, specialist projects and construction works.
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Latest review:
Dafydd and his team have fitted a new welsh slate roof on part of our farmhouse, built a rear retaining wall, fitted surface water drainage to the rear of the building and rendered one of the two gable end walls in lime mortar. The jobs have been carried out to a very good standard and the workmen have been excellent in both carrying out the work and looking after the property whilst working there. They still have one gable wall to complete but due to weather conditions and the use of lime mortar this will be down when the weather improves. Whenever I have discussed any part of the work they have been quick to react positively. Overall really satisfied with the work and will be hiring them to fit new concrete floors inside the house and Dafydd has already organised a visit from a heating engineer to give a quote on central heating. One final point, the financial cost of the work completed has come in just as the initial quote stated which was very welcoming given scare stories you hear of every increasing bills. No such problem on this job and overall very pleased with Dafydd Lloyd's work. In my experience there a good friendly professional firm to hire.
Kelvin Houston Carpentry and Joinery Services
Rating: 4.4 out of 5
Extension Builder in Porthmadog
I have been in the trade for over 25 years, I have taken on large and small scale work over the years, the work is carried out to a high quality with customer satisfaction paramount.
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Latest review:
Extensions- 30 Dec 2021
After getting a quote and feeling that James (Kelvin) knew exactly what he was doing, I was pleased I was going to get a bad job done well. After starting 2 months after the date quoted and paying a large amount of money for materials, which weren't delivered as quoted, Kelvin eventually started work (end of October), knocking down existing roofing, and leaving it without any cover for me to move between my house and bathroom, we then had the heavy rain, which he did say was on its way, causing water to get into my house and the bathroom. When he did start, being at work I couldn't see exactly what was going on. These are the problems we are now having after asking Kelvin to leave the job. After moving back door out a little, and external drain now being exposed on the inside of the house, it covered as an eco drain. After placing the cover (which we now know doesn't fit) over the drain, it was concreted up, which is against building regs, leaving any debris in the drain, so after having rain again this has flooded causing water to spread under existing flooring. Bad electrical work - with no name of electrician or cert as requested Life wires being left exposed Bad plastering - which Kelvin admitted he was no good at Roof leaking - no name of roofing company to get back to Floor tiles which he laid v v very badly - loose and able to take up without use of any tooling and not breaking any. I would not advise anybody to take him on as a builder
RKT HOMEIMPROVEMENTS
Rating: 5 out of 5
Extension Builder in Porthmadog
Hi Im Ryan From the Dolgellau area we undertake all general building work from structural work to roofing work , to fitting your bathrooms and kitchens, we also cover landscaping work . And listed buildings work. I previously worked 12 years with a well recommended builder to learn all about the building trade and have been trading for 7 years, so can assure the experience is correct . We like to do things properly and under building control regulations and everything structural passed by engineers . We take a lot of pride in what we do , see the photos. We aim to keep customers happy during and after job is completed. Many Thanks Ryan
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Latest review:
Roofing (Flat)- 28 Nov 2020
Leaking flat roof, totally removed and replaced with added insulation. From first contact with RKT improvements to completion we have been really pleased. We will certainly use them again and thoroughly recommend. Tidy, friendly on time and completed as estimated.
RJO Joinery
Rating: 5 out of 5
Extension Builder in Porthmadog
I’m a carpenter by trade but take on small extensions and loft conversions. I have pages on social media containing images and reviews of my work. I’m very friendly and approachable. I’m always happy to go the extra mile to make sure customers are satisfied with their service. I believe my work to be second to none at a competitive rate.
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Latest review:
Kitchen Fitting- 31 Mar 2026
Kitchen fitting: looks amazing, thank you! Would recommend to anyone 😄
J.w Griffiths
Rating: 5 out of 5
Extension Builder in Porthmadog
we will undertake a variety of tasks, ranging from a private dwelling to public or commercial sector projects large or small. Our extensive skills and experience in groundwork’s, renovations & alterations. Together with latest technology and machinery enables us to offer and deliver the quality and service that you require.
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Latest review:
Demolition- 1 Oct 2022
Extremely pleased, from initial enquiry to job being completed excellent service
Dragon Property Solutions
Rating: 4.9 out of 5
Extension Builder in Porthmadog
Dragon Property Solutions – Where Quality Meets Reliability, and Your Satisfaction Shapes Our Reputation. At Dragon Property Solutions, we’re proud to be North Wales’ trusted all-trades property maintenance company. With over 25 years of experience, we’ve built a solid reputation for delivering dependable, high-quality workmanship across every aspect of property care. From roofing and plastering to painting, rendering, and full renovations – we do it all with precision, professionalism, and pride. Our experienced team of skilled tradespeople is committed to excellence at every stage – from your initial consultation to the final finishing touch. We specialise in providing durable, cost-effective solutions tailored to residential, commercial, and public sector properties throughout North Wales. Whether it’s a minor repair or a full-scale project, Dragon Property Solutions is here to protect, improve, and maintain your property to the highest standards – whatever the weather.
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Latest review:
Fascias & Soffits- 19 Nov 2025
Brilliant job, lovely lads, great communication, very happy with the work thank you so much .
W & J Jones Building Contractors
Rating: 5 out of 5
Extension Builder in Porthmadog
We're a Family run company Been trading for over 25 years
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Latest review:
Plastering- 8 Aug 2023
Excellent job ! Very pleased. Will definitely be using again. Thank you for prompt response and for completing the job quickly.
Gwynedd and Anglesey Bricklaying
Rating: 5 out of 5
Extension Builder in Porthmadog
We are sub-contractors working all over Gwynedd, Anglesey and Conwy with 12 years experience & my partner has 25 years in all aspects of bricklaying. We offer all aspects of bricklaying,drive ways,blockpaving,slabbing,fencing.
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Latest review:
Bricklaying- 2 Apr 2017
Very pleased with Jason's attitude towards this job, he carried out the work on the agreed date, and to a very good standard, and all at a very competitive price. Will not hesitate to offer Jason more work in the future. Ed Thomas.
Paul Morgan Construction
Rating: 5 out of 5
Extension Builder in Porthmadog
Bricklayer by trade. 30 years experience in construction, the last 10 in project management & site management. We undertake various projects from new build houses and extensions, to barn conversions and refurbishment. Bricklaying & stonework specialists. Also Groundworks including drainage, fencing, decking and hard landscaping. We can also offer value engineering solutions.
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Latest review:
Extensions- 21 Oct 2019
Paul has been extremely helfpul in the renovation of our first home. He has re-built our kitchen, fitted doors, windows and renovated upstairs (from a bungalow). He was able to advise us on what would work best as we had no clue where to start. He always showed up when he said he would, is very clean and tidy and cleary takes pride in his work. We have no complaints and with years experience he has also been able to recommend other tradespeople to us. We highly recommend him and have already recommended him to others. Really appreciate all the work he has done for us.
DG brickwork
No reviews yet
Extension Builder in Porthmadog
DG brickwork: fast and reliable workmanship with years of experience in the Trade.
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What types of services are offered by local extension builders in Porthmadog?

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

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

What are the hourly rates of extension builders in Porthmadog?

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

Find extension builders in Porthmadog with MyBuilder

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

Step 2: Compare different extension builders in Porthmadog

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

Step 3: Hire Porthmadog extension builders with confidence

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

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

What to ask a Porthmadog extension builder before hiring?

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

An extension builder in Porthmadog 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 Porthmadog 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 Porthmadog?

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 Porthmadog 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 Porthmadog 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 Porthmadog

Can an extension builder in Porthmadog help with planning permission?

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

Many Porthmadog 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 Porthmadog help with materials and finishes?

Yes, most extension builders in Porthmadog 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.