Some houses need one room sorted. Others need everything: walls moved, floors relaid and new plaster throughout. We do both.
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We're a team of tradesmen from Pontrug, near Caernarfon. We check the work at every stage, keep the house tidy while we're in it, and keep you told what's happening.
Those are the three things our customers mention again and again – and they matter even more when you're living in the house while the work goes on. Gwynedd Construction Ltd has been building in North Wales as a limited company since 2016.
Book a free estimateFrom stripping out to the final coat of paint, managed as one job. That suits a house you've just bought, or one that hasn't been touched for years.
We agree the order of work with you at the start, so you know which rooms are out of use and when.
A bedroom, a lounge or a hallway that needs new walls, ceilings or floors. Smaller jobs get the same care as big ones.
We sheet off the rest of the house and clean up before we leave, so you'd hardly know we'd been there.
Walls taken out or moved, with steels fitted where needed, to make the house work for the way you live now.
See our knock-throughs page for how we take out load-bearing walls safely.
Artex removed, new plasterboard, walls skimmed and ready to decorate. Old tiles up, floors screeded and levelled.
Our own team does the plastering, so the finish is consistent from room to room.
A lot of homes in Gwynedd are old stone cottages and terraces. Once you open a wall or lift a floor, you find things nobody could see at the quote stage.
Our customers say how we handle those moments matters as much as the finish. We explain what we've found and talk you through the options.
Need more space as well? See house extensions and garage conversions.
Every house is different, but every renovation follows the same order.
We walk the house with you and price the work in writing.
We agree which rooms go first, so you can live around the work where possible.
Walls, floors and anything hidden that needs fixing.
New walls and ceilings, screed and floors.
Kitchen, doors, skirting and a clean house handed back.
Most renovation work needs no planning application. These are the exceptions:
If your house is listed or in a conservation area, ask us before you start and we will help you check.
Caernarfon town centre and parts of Bangor and Y Felinheli are conservation areas, and much of Gwynedd is inside Eryri National Park. Outside changes there may need permission.
We give you a start date and keep you up to date as the job goes, so you always know what's happening next.
Since 1 September 2024, Gwynedd Council needs planning permission before a main home becomes a second home or short-term holiday let. Eryri National Park brought in the same rule on 1 June 2025.
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 renovate homes across Gwynedd and Anglesey. Not on the list? Give us a ring and ask.
Yes. We look at the walls, floors and damp first, then plan the work around what we find.
Yes. Customers often do, and we talk it through on site.
Not usually for work inside a house. Structural changes need Building Regulations approval, and listed buildings need listed building consent.
Yes. Call 07825 205657 or send the form below, and we'll arrange a free estimate.
You can renovate it, but in Gwynedd you now need planning permission before a main home is used as a second home or short-term holiday let. Ask us before you start and we'll help you check.
Yes. From one room to the whole house, the same team does the work.
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 →
PlasteringSkimming, Artex covering, re-plastering and new boarding.View service →
Patios & landscapingPorcelain, slate and sandstone patios and garden walls.View service →
We'll come and walk the house with you, and give you a free written estimate.