We're based just across the Menai Strait in Pontrug, near Caernarfon, and we work on homes across Ynys Môn.
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Extensions, renovations, garage conversions, plastering and patios – the same team and the same standards as on the mainland.
Coastal homes take a lot of weather, so we choose materials and finishes with wind and salt air in mind.
Gwynedd Construction Ltd has been building in North Wales as a limited company since 2016.
Book a free estimateAnglesey has its own council, a protected coastline and weather that's harder on buildings than most places. Here is what each kind of job looks like on Ynys Môn.
From Menai Bridge and Llanfairpwll to Llangefni, extensions on Anglesey are mostly about more room downstairs and extra bedrooms.
Around 95% of the island's coastline is an Area of Outstanding Natural Beauty. Inside it, two-storey extensions can't be built under permitted development, and side extensions are more limited.
New homes on Anglesey are approved by the Isle of Anglesey County Council, not Gwynedd Council.
Every new home needs sprinklers, and most need SAB approval for their drainage from the county council before work starts.
Converting a garage into a bedroom or office adds a room without building into a protected coastal garden.
If the garage is attached and the work is inside, you usually need Building Regulations approval but not planning permission.
Opening up older island cottages and terraces gives a bright kitchen-diner.
Steels are sized by an engineer and inspected by the county council's building control.
From cottages to family homes, we renovate single rooms and whole houses on the island.
Towns such as Beaumaris have conservation areas, where many outside changes need permission.
Plastering on Anglesey: skimming, Artex covered and re-plastering, on its own or as part of a bigger job.
Old Artex should be tested for asbestos before anyone sands or scrapes it.
Wind and salt air are harder on patios, pointing and render, so we choose materials and finishes with that in mind.
Porcelain is the most weather-resistant, low-maintenance choice for a coastal garden.
The island has its own council and some extra protection on the coast:
Rules change, so treat this as a guide – we check your address before you commit.
Wind and salt air are harder on render, pointing and outdoor materials. We choose materials and finishes with that in mind.
In Wales, building work of 100 square metres or more needs SuDS (SAB) approval for its drainage – on Anglesey from the county council.
Real words from real customers in Gwynedd, Bangor and Anglesey.
“Once the decision to FINALLY get a new kitchen was made the nerves set in. There was no need, Gavin and his team made everything right. Communication was excellent … And best of all done within timescale agreed. Very Happy.”
“I’ve used Gwynedd Construction on several occasions for general repairs in my office, and every time the service has been exceptional. Gavin, the owner, is professional, reliable, and clearly takes pride in the work his team delivers. … Highly recommended if you’re looking for quality workmanship in North Wales.”
“Can't speak highly enough of Gwynedd Construction Ltd. They completed the work on time and to an extremely high standard. Nothing was too much trouble … Will definitely use them again.”
“I must commend the excellent high-quality construction work that was delivered. … The planning phase was executed to perfection … the team's ability to effectively manage unexpected changes truly stood out. … 100% recommend.”
“Gwynedd Construction did an excellent job on the work i had done on my bedroom. They were very professional and polite. They cleaned up afterwards and you wouldn't have known they had done work on my bedroom.”
“Gavin and Geraint were extremely professional from our very first meeting. They are two hard working, trustworthy, reliable and extremely tidy workmen. … Can't recommend them highly enough.”
“Can't speak highly enough of Gwynedd Construction and the incredible work they did on our one-year renovation project. … What impressed us most was their ability to handle unexpected challenges with ease, offering creative solutions while staying on schedule and within budget.”
“The team built a large extension at the back of my property and a detached garage … I then had the team back to do a patio and a retaining wall. Also very clean and tidy workers … Good job Gavin and gang.”
“We are extremely pleased with the work that has been completed. … Everything was kept safely and out of the way at the end of the day. They all worked very efficiently to a very high standard.”
“A true craftsman, a master of his trade. A man of integrity and reliability always prompt and courteous. … I’d highly recommend this exceptional builder and his skilled team.”
“Gwynedd Construction provides excellent, quality professional service, project managed my extension, very impressive, on time and within budget, as well as offering innovative design advice along the way, highly recommended.”
“Hogia clên ac taclus iawn ei gwaith. Glanhau bob nos cyn gadael ac yn hollol ddi-drafferth. Awgrymu’r cwmni’n gryf!”“Friendly lads, very tidy work. They cleaned up every night before they left, and it was completely hassle-free. Highly recommend the company!”
“It was a pleasure to welcome this friendly professional and trustworthy crew every morning. Never let me down, in fact went out of their way to find solutions to unforeseen issues.”
A local builder you can reach on the phone, who turns up when they say and leaves the job tidy.
Based in Pontrug, just outside Caernarfon, with more than 15 years in construction.
Gwynedd Construction has been a limited company since 2016.
And 100% of people who reviewed us on Facebook recommend us.
From the groundwork to the plastering, so you're not passed between firms.
The site is kept clean as we go, and you're kept up to date the whole way.
As well as Anglesey, we work across Gwynedd and Anglesey. Not on the list? Give us a ring and ask.
The Isle of Anglesey County Council, not Gwynedd Council.
Yes. Call 07825 205657 or send the form below.
Extensions, new builds, garage conversions, knock-throughs and kitchens, renovations, plastering and patios. See our services above.
Yes. They're just over the bridge from us, and we work across the island.
The Isle of Anglesey County Council's SuDS Approval Body (SAB).
Tell us a bit about the job. We'll come out, have a look and give you a free written estimate.