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We design, build and install bespoke insulated garden rooms across the Republic of Ireland — from Dublin and Meath through Louth, Kildare and Wicklow. Every room is made to measure, fully insulated and finished to be used all year, not just in summer. We are a family-run joinery business, established in 2009, working from our base at Mayobridge, Newry, which keeps us within easy reach of the whole island.














A team of qualified tradesmen specialising in insulated garden rooms, working across the Republic of Ireland and Northern Ireland.
We aim to have our insulated garden buildings completed within 3-5 days to minimise disruption for you.
Confirm your booking with a deposit, make a part-payment on day one of installation, then settle the balance on completion day. *Finance options now available
A garden room only earns its cost if it is genuinely usable in January as well as July. Ours are built with insulated walls, floor and roof, proper glazing and a solid base — the same standards we apply to extensions. You get one team from survey through to handover, and a written fixed quotation before anything begins.
Insulation throughout, quality glazing, hard-wearing flooring, electrics installed by a qualified electrician, and cladding options in composite or timber. We handle delivery and installation ourselves rather than subcontracting it, which is why our timescales hold. Every build is measured for your garden — nothing is taken from a catalogue.
Explore our range of bespoke garden rooms and get in touch via phone, email, or social media to discuss your ideas. You’re also welcome to visit our Garden Room Showroom just outside Newry to experience the quality of our work first-hand.
We provide a free, no-obligation quote and help you choose the ideal size, layout, and finish to suit your space and lifestyle. Once agreed, your booking is secured with a 10% deposit, followed by 50% on day one of installation and 40% on completion. Finance options available.
Your fully insulated garden room is built on site from start to finish, with most installations completed within 3–5 days, depending on your specifications.
Sit back and enjoy your new low-maintenance, year-round space, backed by our 10-Year aftercare warranty for complete peace of mind.
Most of our Irish clients use a garden room as a home office, a gym, a studio, a treatment room or simply extra living space away from a busy house. The shell is the same quality in each case; what changes is the layout, glazing, power provision and heating. Tell us how you intend to use it and we will specify it accordingly.
EXCELLENT
Based on 97 reviews
Posted on Google![]()
Owen O BTrustindex verifies that the original source of the review is Google.
We had a garden room built by CG Garden Room in May. Very happy with how it turned out. Arrived exactly when they said they would and built it to our exact requirements. The whole job was finished in 4 days. Very professional and nice people to deal with.Posted on Google![]()
deborah CarrTrustindex verifies that the original source of the review is Google.
We recently had a garden room built, and I can honestly say the whole experience was a pleasure from start to finish. The team were friendly and easy to have around from day one - polite , respectful, they turned up when they said they would each day, got straight on with the job, and worked efficiently until completed. The finish was precise, tidy and solid, it was clear they do things properly and don't cut corners. We are absolutely delighted with the result and wouldn't hesitate to recommend Conaill and his team to anyone looking for a room built by reliable, hardworking guys who know their trade and take pride in their work.Posted on Google![]()
Toni HollowellTrustindex verifies that the original source of the review is Google.
From start to finish the lads at CG Joinery were excellent to deal with! They were really helpful in discussing options, sizes, plans and models of the garden room over the phone and via Teams calls. They responded quickly to queries and made it an easy decision to travel from Galway to Newry to visit the showroom before the final design was agreed. The garden room was installed last week, after a long but very worthwhile wait - no delays, we were told when ordering it would be December, just in time for Christmas. The install team were amazing. Professional, tidy, courteous and trojan workers! Our 35m2 room was up and finished within 28hrs - built, floored, plastered with lights and heat working! They arrived at 7.30am one day and had completed the build and cleaned up by 10.30am the following day. We are more than happy with the result and feel the quality, workmanship and speed in completing the build was worth every penny. We would highly recommend CG Joinery if you're considering them.Posted on Google![]()
HollieTrustindex verifies that the original source of the review is Google.
I was lucky enough to win a competition on Instagram for a garden room with CG Joinery. It was honestly the most emotional experience I’ve ever had as this was something I have dreamt of putting in my back garden since we bought and renovated our house in March ‘23. We put a lot of money towards the win to extend our garden room and I worried this would cause hassle. Instead, it was the smoothest process ever! Conaill was always a phone call away over the months or back and fourth planning. Sarah was always at the end of every email and responded instantly. The men that came to built our dream garden room were so lovely, so easy to host and so lovely to chat about to. Every single person on the team takes their roll very seriously and you could see and hear that while they worked. They were at our door at 7:15 am and did not finish up until 7pm that night. The following day they had a 7:30 start time and the job was complete by 9:30am. I could not get over how quick they had it complete. It went to show that experience from highly skilled workers pays off. I will continue to recommend CG Joinery as in today’s world, it is very easy to get people who are looking for the money but don’t want to do the job. It makes it very hard to trust anyone anymore. But CG Joinery are whole heartedly involved and encouraging to do every job right and to the best standard! HIGHLY HIGHLY RECOMMEND! Hollie Dunlea.Posted on Google![]()
Valbona MTrustindex verifies that the original source of the review is Google.
Absolutely delighted with our garden room from Garden Rooms by CG Joinery. The quality of workmanship is excellent, the team were professional and reliable, and the whole process was smooth from start to finish. The garden room looks fantastic and has exceeded our expectations. Highly recommended. We wouldn’t hesitate to recommend Garden Rooms by CG Joinery to anyone considering a garden room — outstanding quality and a fantastic service from start to finish.Posted on Google![]()
Ben GilmoreTrustindex verifies that the original source of the review is Google.
Just had my garden room and shed finished and we are over the moon, brilliant having it up and ready for Christmas 😅🎄 top class service, thank you very much!Posted on Google![]()
Sharon OwensTrustindex verifies that the original source of the review is Google.
Fantastic from start to finish great group of lads especially ethan.Hard workers v polite.would highly recommend great workmanship high quality finish inside and outside. Delighted with my garden room.Posted on Google![]()
Keith RichardsonTrustindex verifies that the original source of the review is Google.
Great service. There's a wait time but the room was built very quickly and to high quality. Way more economical when compared to an extension. The design your own room tool is also fab.Posted on Google![]()
Jonathan D'ArcyTrustindex verifies that the original source of the review is Google.
CJ joinery is one of the most professional companies I’ve ever dealt with, the team are super professional, have great work ethic and deliver the best standards. We got a garden room and shed combo and from start to finish the experience was amazing. Would recommend to anyone in Ireland!
Not every garden has room for a large build, and a cramped layout is worse than a smaller one done well. We regularly work with narrow plots and awkward corners, using slimmer depths, corner placements and full-height glazing to keep the space feeling open. If access is tight we will tell you at survey stage rather than on installation day.
Composite cladding holds its colour and needs very little upkeep, which suits exposed Irish sites and coastal weather. Timber gives a warmer, more traditional finish but wants occasional treatment. We supply both, along with the porcelain paving and trims to finish the surrounding area, so the whole project comes from one supplier.
Every room is drawn around your garden, your access and how you plan to use it. Size, door position, window layout, internal finish and power provision are all decided with you before we build. That is the difference between a garden room that fits and one that merely arrives.
A garden office needs more than a desk and a socket. We plan power and data properly, insulate for acoustics as well as heat, and position glazing so screens are not fighting glare. The result is a room you can work in for a full day without the compromises of a spare bedroom.
Building the structure off-site means groundworks and construction progress at the same time rather than one after the other. Installation on site is usually measured in days. If you are considering a full modular home rather than a garden room, that is a separate service and we are glad to talk it through.
Where clients need something closer to a small annexe than a single room, we build larger garden houses with separate zones — living area, storage, and where drainage allows, a shower room or WC. These require more planning consideration, and we will be straight with you about what your local authority is likely to expect.
Tell us where you are and how you want to use the room, and we will arrange a site survey and a written fixed quotation. We cover the Republic of Ireland and Northern Ireland from our base at 7 Ryan Rd, Mayobridge, Newry BT34 2HZ. Call (ROI) 089 277 2494 or (NI) 07702 909637, or book a showroom visit to see a finished build in person.
We’re dedicated to making high-quality garden rooms accessible to everyone. With flexible financing options, you can explore ways to fund your garden room project without stretching your budget. Our team can guide you through the process with a simple, no-obligation soft credit check.
To see the quality and variety of our garden rooms, we invite you to visit our showroom. Here, you can explore the range of finishes, layouts, and materials in person and get inspiration for your project. Our team will be on hand to answer any questions and provide guidance based on your preferences.
With CG Garden Rooms, you’re not just getting an extra room, you’re investing in a versatile, beautiful space that enhances your lifestyle. Whether it’s for work, relaxation, fitness, or creativity, our garden rooms are custom-built to enrich your home and create value for years to come.
Cost depends on size, specification and site access rather than a fixed price list. We survey the site, agree the specification with you and then issue a written fixed quotation covering the build, delivery and installation, so there are no additions later.
In many cases a garden room falls within exempted development, but this depends on floor area, height, position relative to boundaries and how much of the garden is already built on. Rules differ between the Republic and Northern Ireland. We will advise on your specific site before you commit.
Yes, provided it is built for it. Ours are insulated in the walls, floor and roof, with proper glazing and heating options, so they hold temperature through winter rather than only being comfortable in summer.
Most installations are completed in days rather than weeks once the base is ready. Lead time before installation depends on the specification and current workload, and we confirm dates in writing at the point of order.
€1500 off all garden rooms if you book in July. Don't miss out!