At Cedar Spaces, we build bespoke garden rooms that are design-led, tailored to you, and built to last. With a choice of premium finishes — from natural timbers to modern composites — your space will perfectly reflect your lifestyle and enhance your home.
Bespoke garden rooms crafted with precision and built to last across Hertfordshire and beyond.
At Cedar Spaces, every project begins with your vision. We design and build bespoke garden rooms that combine style, functionality, and durability — creating modern spaces that are as practical as they are beautiful.
Working across Hertfordshire and neighbouring counties, our experienced team manages every stage of the build in house, ensuring a seamless process and exceptional craftsmanship with 5 star customer care. Each room is fully insulated for year-round comfort and finished with electrics, plastered walls, flooring, lighting, and premium glazing. With a choice of natural timber or modern composite cladding, your Cedar Space becomes a lasting extension of your home.
My name is Brian O’Connell, and Cedar Spaces began in 2018 when I built my own garden room. With young children at home, it quickly became a space where I could focus on work, fitness, and family life in balance. Experiencing that transformation first-hand inspired me to help others do the same. Today, I combine my background in engineering and financial planning with a passion for design to create bespoke garden rooms that bring everyday life more space, comfort, and style.





Posted on Google Ben MarlesTrustindex verifies that the original source of the review is Google. We are really pleased with our garden room. Mix of gym and snug room. Brian worked with us to maximise the use of the plot and was also flexible with design as we worked through cabling and door choices later in the process. Good quality workmanship a done to time 👍🏼Posted on Google MilesTrustindex verifies that the original source of the review is Google. Highly Recommend! Brian and his team were informative, honest and prompt to handle any queries or updates. Whole thing was finished end to end in a couple of weeks and months on I couldn't be happier!Posted on Google Ben SweetingTrustindex verifies that the original source of the review is Google. Couldn’t be happier with how our cabin turned out; highly recommend.Posted on Google Frances SpencerTrustindex verifies that the original source of the review is Google. Brian and his team recently completed the build of a black timber-clad garden room for us, and we are so pleased with the final result! The garden room looks beautiful and is finished to a really excellent standard. We use it as both a home office and snug/ TV room. We chose Cedar Spaces as we wanted a bespoke crafted room, tailored to our needs, versus an off the shelf design. It was absolutely the right decision for us! Brian was so helpful and supportive throughout- going through various different design options, and guiding and directing our decisions patiently. We opted for an extra window, and at the last minute, chose black timber- cladding- which looks really smart and blends into the space really well. The build was efficient and completed within a couple of weeks and Brian has been available since to help with any follow-up queries. It’s been a pleasure throughout- I highly recommend Brian and his team!Posted on Google Scott PerryTrustindex verifies that the original source of the review is Google. Super happy with Brian and the team’s work. Garden office and shed is a massive success, exactly as designed. Great comms all through the process while being super helpful and accommodating of our (numerous) requests. Very happy to recommend.Posted on Google Mark DavidTrustindex verifies that the original source of the review is Google. Cedar Spaces and the team were fantastic in very difficult weather conditions. The design and build process was detailed and informative and the end result was an excellent living and working space. I highly recommend Cedar Spaces for the work and product they offer.Posted on Google Chris ArnoldTrustindex verifies that the original source of the review is Google. Cedar Spaces were great. Good comms, polite and tidy. We’re very happy with the quality of the work and would recommend.Posted on Google Michael DoyleTrustindex verifies that the original source of the review is Google. In a nutshell, Brian and his team did an amazing job on our garden room which we love and use all the time. The quality of build is excellent and 2-3 years on, we’ve had no issues at all. They were a pleasure to have around, were very accommodating, professional and had a work clean and safe ethic I recall. I have highly recommended them since and will continue to do so. Many thanks again Brian and team.Posted on Google Jane WatsonTrustindex verifies that the original source of the review is Google. Brian and his team built our garden room with sauna 2 years ago, and it still looks brand new, inside and out. A really well built structure that we’ve really enjoyed using all year round. We would highly recommend Cedar SpacesPosted on Google Ju FerTrustindex verifies that the original source of the review is Google. We are really pleased with our new home office built by Brian and his team and would fully recommend Brian’s services. After our planning permission was granted Brian was able to start within a couple of weeks. We discussed our project in detail. What we liked is, that Brian and his team build to measure maximising the usage of the garden space (unlike other builders who use prefabricated SIPs). His team consist of fully trained professionals, who are in the building undustry for years). Hence the quality of the structure and finish will be to the highest standards. The progress was really quick and every day his team was onsite to ensure there is work being done. Also if Brian says that the electricians will be there on a specific date to do the wiring, they will turn up on that date. We recommend to install underfloor heating for the winter months in addition to the aircon, it warms up quickly and ensures the floor is nice and warm. Finally, we were very pleased with the communication. Brian is very quick to reply to the client’s queries and if any adjustments need to be made during the project, Brian will make sure that they will get done. Again, we fully recommend cedar spaces and the project was delivered on time and on budget! Thanks again to Brian and his team!
Add versatile, high-quality space to your property without the hassle of major building works. In most cases, no planning permission is required.
Every garden room is unique — tailored to your lifestyle and your needs, whether for work, wellness, or relaxation. We work with you from concept to completion to create the perfect design.
Fully insulated and heated, your garden room provides a functional living space in every season — cool in summer, warm in winter.
From home offices to gyms, music rooms to guest spaces, your Cedar Space adapts to how you want to live — while using eco-friendly materials and smart design.
Finished in your choice of natural timbers or modern composites, our garden rooms are built to last with minimal upkeep, retaining their beauty year after year.
We manage every detail in-house and keep you informed at each stage. Every building comes with a 10 year structural warranty, giving you complete peace of mind.
Each project we build is unique and it is therefore difficult to present a set menu cost for your build. As an indicative figure our garden room prices start from £1,250 per square meter.
Please note that our buildings are high specification garden rooms and are built with the quality and construction methods of a new home, therefore the price of a Cedar Space should be compared with the price and inconvenience of an extension rather than the price of a shed. Our buildings are affordable investments to your home which will not only add extra valuable space but will also add value to the price of your home if you sell in the future.
You get a 10 year structural warrantyagainst defects. As certified installers of EPDM roof covering you will get a 20 year guarantee for your roof. All electrical and plumbing work is completed by fully registered tradesmen. In addition, manufacturers’ guarantees for windows, roofing, flooring, etc. are also given.