Y Felinheli sits on the Menai Strait between Caernarfon and Bangor, a short run up the road from our base in Pontrug.
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The village grew as the port that shipped Dinorwig slate, and you can still see that in the old harbour, the dock buildings and the terraces that climb the hill. Alongside them are newer family homes and estates.
We build, renovate and plaster for both kinds of house.
Gwynedd Construction Ltd has been building in North Wales as a limited company since 2016.
Book a free estimateY Felinheli grew as the port for Dinorwig slate, so it has old harbour terraces and dock buildings alongside newer estates, and many gardens slope down to the Menai Strait. Here is what each kind of job looks like in Y Felinheli.
Extensions in Y Felinheli often make the most of a view: a kitchen-diner or family room facing the Strait.
Part of the village is the Aberpwll – Y Felinheli Conservation Area. Inside it, two-storey extensions can't be built under permitted development, and many outside changes need permission.
Sloping plots above the Strait need careful groundwork, retaining walls and drainage before the house even starts.
A new home needs a sprinkler system and usually SAB approval for its drainage – on a slope, the drainage design matters even more.
Garages on the newer estates in Y Felinheli make useful home offices and bedrooms.
We check first whether your estate has a planning condition that keeps the garage as a garage.
The harbour terraces were built with small rooms. Taking out the wall between the kitchen and back room makes one bright space.
In a terrace, the steel may sit in a shared wall, so a party wall notice is needed before work starts.
Bringing the older terraces up to date without losing their character is a common renovation job here.
There are more than 30 listed buildings in the community, including the former dock offices. If yours is listed, most changes need consent.
Plastering in Y Felinheli means re-plastering old walls in the terraces, skimming over Artex and boarding new rooms.
Old Artex should be tested for asbestos before anyone sands or scrapes it.
Many gardens slope down towards the Strait. A retaining wall and a level patio turn a slope into somewhere to sit and enjoy the view.
Retaining walls hold back tonnes of soil, so they need proper footings and drainage behind them.
A few local things are worth knowing before you plan:
Planning in Y Felinheli is decided by Gwynedd Council.
See how a retaining wall turns a slope into a flat, usable space.
Since 1 September 2024, Gwynedd Council needs planning permission before a main home becomes a second home or short-term holiday let.
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 Y Felinheli, we work across Gwynedd and Anglesey. Not on the list? Give us a ring and ask.
You can check on Gwynedd Council's conservation area map, or we'll check it for you.
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.
Part of Y Felinheli is in the Aberpwll – Y Felinheli Conservation Area. You can check on Gwynedd Council's map, or we'll check it for you.
Yes. A retaining wall with proper footings and drainage turns a slope into flat space you can use.
Tell us a bit about the job. We'll come out, have a look and give you a free written estimate.