Get the groundwork wrong and you're looking at puddles and rocking slabs by the second winter. Get it right and the patio still looks good years later.
We lay porcelain, slate and sandstone patios, build garden and retaining walls, and do the groundwork that sits under all of it. Gwynedd Construction Ltd has been building in North Wales as a limited company since 2016.
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Hard-wearing, easy to clean and very little upkeep. Porcelain resists stains, which makes it a good choice for a busy family garden.
Choose an outdoor-rated, textured finish so it has grip when it's wet.
A natural fit for North Wales homes and gardens. Slate is dark, natural and local, and suits cottages and stone houses.
A riven finish gives good grip in wet weather.
Warm colours and a traditional look. Sandstone suits traditional gardens and older houses.
It needs sealing and cleaning more often than porcelain, so it's a good choice if you don't mind a little upkeep.
Plenty of gardens in Gwynedd climb or drop away from the house. A retaining wall turns a slope into a flat patio or lawn you can use.
These walls hold back tonnes of soil, so they need proper footings and drainage behind them. It's building work, not just landscaping.
Digging out, levelling and drains, with a mini digger where the job needs it.
This is the part you never see, but it's what stops the patio sinking and the water pooling.
Building an extension at the same time? See house extensions.
A patio is only as good as what's under it. This is how each one is built.
The patio must fall away from the house, so rain runs off and not towards your walls.
Down to firm ground, with roots and soft soil removed.
Compacted hardcore, the layer that stops the patio sinking.
Bedded on mortar and set to the right falls, so nothing rocks or holds water.
Pointed, cleaned and ready to use.
All three make a good patio. The right one depends on your house, your garden and how much upkeep you want:
Not sure which to choose? Ask us at the free visit.
Not usually for a patio at ground level. Raised terraces and decks are different, so ask us.
A retaining wall can turn a slope into a flat, usable space. It needs proper footings and drainage behind it.
In Wales, building work with a construction area of 100 square metres or more – counting new buildings, extensions, patios and driveways together – needs approval from the council's SuDS Approval Body (SAB) for its drainage before work starts.
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.
We lay patios and build garden walls across Gwynedd and Anglesey. Not on the list? Give us a ring and ask.
Not usually for a patio at ground level. Raised terraces and decks are different, so ask us.
Porcelain. It resists stains and only needs a wash now and then.
Yes. A retaining wall with proper footings and drainage turns a slope into a flat space you can use.
Yes. Call 07825 205657 or send the form below, and we'll arrange a free estimate.
It can. In Wales, if new hard surfaces and buildings add up to 100 square metres or more, the drainage needs SAB approval from the council before work starts.
The same local crew can take on the rest of the house and garden too.
New buildsNew homes and building conversions, from groundwork to handover.View service →
House extensionsSingle-storey, kitchen, side and two-storey extensions.View service →
Garage conversionsTurn a garage you hardly use into a bedroom, office or gym.View service →
Kitchens & knock-throughsTake a wall out with steel beams and make one open-plan room.View service →
RenovationsWhole-house and room refits, from stripping out to finishing.View service →
PlasteringSkimming, Artex covering, re-plastering and new boarding.View service →
We'll come out, measure up and talk you through the options. The estimate is free.