Looking for high-quality insulated garden rooms in Northern Ireland & Ireland ? CG Garden Rooms designs and builds strong, stylish spaces for your home. As a family-run business with a reputation for quality and personalized service, we specialize in bespoke garden rooms tailored to your needs. Our garden rooms are warm in winter and cool in summer, and are specifically designed for year-round use.
Whether you need a home office, gym, or quiet space to relax, we can help. Insulated garden rooms are the perfect solution for anyone needing extra space for work, fitness, or relaxation.














We consist of a group of highly qualified tradesmen and are now very proud specialists in insulated garden rooms, serving all across Ireland and parts of UK.
We aim to have our insulated garden buildings completed within 3-5 days to minimise disruption for you.
Confirm your booking with a deposit, then then make part-payment on day one of installation followed by final payment on completion day.
*Finance options now available
We build modern garden rooms Northern Ireland & Ireland homeowners enjoy every day. Each room is made with care and built to last in all weather. As a family-run business, our team understands the needs of families and children, ensuring our insulated garden rooms are designed with comfort and practicality in mind.
We work across Northern Ireland & Ireland, including garden rooms in Newry, and create spaces that add value to your home. Our garden rooms can be enjoyed by all family members for a variety of activities, from relaxation and hobbies to family gatherings and entertainment.
Our insulated garden rooms are made with high-quality materials to give you:
Our structures are built to suit a variety of needs and preferences, whether you want a home office, gym, or creative studio.
If you need insulated garden rooms in Northern Ireland & Ireland, we offer a simple and reliable solution.
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 2–5 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.
At CG Garden Rooms, we’re committed to bringing you high-quality, custom-designed garden rooms that suit your unique needs and style. Whether you’re looking for a home office, a personal gym, or a relaxing retreat, our garden rooms for sale offer the perfect solution for enhancing your outdoor space. With a dedicated team of experts, we ensure every garden room is crafted with precision, durability, and style.
We provide a range of design options tailored to meet each client’s preferences, including choices in size, layout, and external finishes. From the very first consultation to the final day of installation, we’re here to guide you every step of the way, ensuring a seamless experience that results in a garden room you’ll enjoy for years to come.
Our garden rooms are designed with your comfort and convenience in mind. Here’s why CG Garden Rooms is the trusted choice for homeowners across Ireland:
EXCELLENT Based on 97 reviews Posted on 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 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 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 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 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 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 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 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 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!
Our small garden rooms are perfect for smaller spaces. They are smartly designed to give you comfort without taking up too much room.
Great uses include:
A small garden room can provide a dedicated space for your favorite activities, giving you a private and functional area separate from your main home.
We also offer modular garden rooms that are quick to install and easy to customise.
A small garden room can transform even the smallest garden into a functional retreat, enhancing both the appearance and usability of your outdoor space.
We build strong composite garden rooms and composite garden buildings that last longer than timber.
Our range of composite garden rooms is available in a variety of styles and sizes, so you can choose the perfect fit for your garden and needs.
Composite garden rooms can also feature large glass doors, providing easy access and allowing plenty of natural light into your space.
Our composite cladding garden room options give a clean and stylish finish.
If you want composite garden rooms in Ireland & NI, we are ready to help.
Our bespoke garden rooms NI & Ireland are built just for you. We listen to what you need and design a space that fits your life.
You can choose:
Bespoke garden rooms can be designed as creative studios, such as a music studio or art studio, tailored to your needs.
We make sure your garden room works exactly how you want. Your studio can be customized for soundproofing, natural light, or any creative pursuit.
Need a better place to work from home? Our garden offices for Northern Ireland & Ireland give you a quiet and focused space.
Our garden office Northern Ireland & Ireland builds include:
It is a great way to separate work from home life.
A garden office provides a professional workspace that is separate from the main house, helping you maintain focus and productivity.
Our modular garden rooms are built for speed and ease. They are made in sections and put together quickly on site. Modular garden rooms can also be configured as a modern cabin, perfect for relaxation or work.
This means:
You can customise the floor and ceiling design to suit your comfort and style preferences, creating a bright and inviting space. Large windows and doors allow plenty of fresh air into your modular garden room, enhancing the connection to your garden and improving indoor air quality.
Our garden houses for Northern Ireland & Ireland give you extra living space without major building work.
They are great for:
You get more space and added home value.
If you are looking for garden rooms Northern Ireland & Ireland, CG Garden Rooms is here to help.
Contact us today for a free quote and start planning your new space.
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.
Installation is typically completed within 2-5 days, depending on the size and complexity of the project. Our efficient process ensures minimal disruption and a quick turnaround.
In most cases, garden rooms don’t require planning permission as long as they fall within certain height and size restrictions. However, we recommend checking local regulations or consulting with us for advice.
Contact us via phone, email, or visit our showroom to discuss your vision. We’ll guide you through the design options and answer any questions.
Yes, we offer a 10-month aftercare warranty to address any issues that may arise after installation, ensuring long-lasting quality and durability.