Premium Garden Rooms for You

Excellent experience with TRJ Construction

"Costi has been excellent since our first contact with him, helping with planning, design and layout and solving problems that occurred as the build started seamlessly. He has always been open, honest and trustworthy, providing sound advice and helping us get every aspect of the build right. Costi takes immense pride in his work, and has fantastic attention to detail. The quality of the build and finish has exceeded our expectations. Costi and his team have always been reliable and punctual, and his knowledge throughout the process combined with his dedication to perfection has really made our build and renovation better than we ever imagined it could be.
I highly recommend TRJ Construction." -

Barney Weston

BRILLIANT JOB - HIGHLY RECOMMEND

"Costi and his team have just finished a truly brilliant job on our new garden room.
Access is very difficult at our house, Costi and the guys (Danni and Gabriel) took great care in moving everything through the house.
Costi really knows his stuff, gave great advice and dealt with issues with no fuss. The team are super punctual, polite, tidy and above all very professional in what they do. We have some further works planned later this year and TRJ are top of the list - highly recommend Costi and his team, thank you very much for a great project." -Martin Narroway

Professionalism, Quality, Responsiveness-Granny Annexe

"Costi, Danny and his team of helpers were wonderful! The finished granny annexe was outstanding, really high quality fittings and a high standard of finish. They were always punctual, polite and friendly. Often going beyond what was required. I would recommend them to anyone, it was sad when the job was finished as they became part of the family ."-Kate Jeppesen

Garden Workshop & Office

"Costi was a real pleasure to work with, was realistic with schedules, professional & helpful going above and beyond what was expected/asked. He stayed within the budget and kept a track of it. TRJ are professional, hard working and skilled. Their work is done to a high standard, they stayed within budget & helped with additional things not in original quote in addition to supply advise and solutions if problems came up .I would definitely work with TRJ again! "

"Costi was there from day one, advising us from the design stage right through to practical completion of the build for our self-contained Granny Annexe, ensuring we got what we required. With his eye for detail, he and his team ensured all works were carried out and installed to the highest standard in meeting our requirements, which he delivered an Annexe, not only eye catching in our rear garden, but also provided all the facilities we required for our needs and Mira's parents. We would recommend him to build any Annexe or Out Building. Mira & Mark "

Garden room

"Costi and the team have recently completed my garden room. Costi was brilliant at keeping us informed throughout the project sending us progress pictures throughout and the lines of communication were always open. I was so impressed by there attention to detail and the care they put into the project which I have to say is rare to find these days. Worth every penny and very happy with the finish. Highly recommend these guys!!"

Adam Day

Costi and Trj truly fit the bill!

"Hi,
I just wanted to take some time to talk about my experience of Trj construction, and the wonderful job that they have made of our garden room!
Costi and his team were polite and focused on the work, and finished the work on time, even though a traffic accident involving their van could have set them back, but did not.
Costi himself is very passionate about his work, suggesting some details on our build that make it so much better than we originally envisioned! As regards the build, I am of the belief that building a garden room with social space, office, shower room with toilet, plumbing, wi-fi and electric(all of which are hidden underground) to a very high quality of finish in 5 weeks to be astounding!
As you can tell, I would thoroughly recommend them, and would like to once again thank Costi and everyone at Trj for the work they have done! "

Scott Hibbett

"Experienced, reliable and professional. I was shopping around for a while before deciding to go with TRJ Construction for my garden office. I wanted a company who had experience and a portfolio of work proving they were up to the job. Costi came to quote and he was the only person who actually got down and lifted the drain lid to check what was required. It was at that point I knew he wasn't shy of work and meant business.
I was kept in the loop before the build and throughout. They started the job early which was great to see and subsequently finished it early. They didn't miss a day and turned up on time everyday. They exceeded my expectations as I thought it would take an extra week.
Costi is extremely experienced in many aspects and does everything to top standard. He is obviously one of those people that can turn their hand to anything and do it to a very high standard. He knows his stuff and this is valuable in itself when getting advice on various parts of the build.
Nothing was too much trouble and if something was wanted / required they would find a way to get it done. Also they were very accommodating if changes were made during the build.
Overall I am extremely happy with TRJ Construction and cannot recommend them enough. If you want a company with 10+ years experience who have done this countless times before then this is the way to go. Well done guys and keep up the great work! "

Emilio Giordano -Ongar

BRILLIANT JOB - HIGHLY RECOMMEND

"We are a new brand of footwear, and we are so excited about seeing our designs on the street. We make shoes, sandals and slippers designed for total comfort, and use a wide range of eco-friendly materials. 

In addition to making sure that every item we produce is environmentally friendly, we also strive to make everything feel great, too! Our products are washable, durable, and comfortable. Your feet work hard. We pamper them every step of the way. "

Martin Narroway ,Watford

“Costi and his team from TRJ Construction built a garden cabin for me and I couldn't be happier with the result. It has been a positive experience throughout. Costi brings a lot of experience with him, provided a competitive quote, managed expectations and timelines well. As a customer, I really felt how much Costi cared about the project and how important it was to him to deliver it to the best possible standard. Thank you, Costi..”

Recreation Room in Barnet

“I must say that this Garden room project with Costi has been a good journey. He has been very accommodating and understanding throughout. His work is excellent and he puts his heart and soul into his work. I have worked with other builders in the past and he is by far the best I've come across.
I am so happy with the results that I can't thank him enough. Great job Costi, and many many thanks again and I hope to see you again on another project.🙂."

Man Cave and Office in Bromley

"Costi and the guys at TRJ were exceptional! They were courteous, punctual, professional and exquisite workmanship. I couldn't ask for anymore and I'm confident anyone else who is considering using his service will agree. Highly recommend."

Futing Li ,Bromley

Garden Room for Guests -Brighton

“Costi and his team were very organized and great communicators with what was happening with our annex build each day. Suitable advice was given on the best outcome of how things were placed and reasons behind them. Every day the team were hard working and leaving the site tidy at the end of each day. They were actually a pleasure to have here as always smiling and easy to approach. They have done a great professional job and we are very happy with their level of professionalism and hard work. What was very noticeable was the level of pride and care and effort they put into the end product. Thanks guys :) We would be very happy to recommend Costi and his team to others.”

Garden Room for Cinema Space 

“I wanted to let you know what a good job Costi & his team have done for us over the last few weeks -we're really happy with the result and are really looking forward to getting it kitted out as our perfect games room.

Costi and his team were brilliant -they seem to work very hard and very efficiently, were polite and helpful at all times and left the site completely tidy every night. Costi was really helpful in guiding us to a really sensible solution for storing our table tennis topper and also in advising us as to how our home cinema set-up should work. I also appreciated that he gave us warning in advance of when we needed to make decisions -always helpful on a project like this. Additionally I appreciate his attention to detail -very reassuring. I'd happily recommend him, and his team, to anyone else.-”

Gym Room

“Just a quick note to let you know that the studio was completed yesterday and it looks magnificent!

It’s difficult to find professionals like you guys these days.

I was very impressed from the very beginning when Brian visited, right through to yesterday afternoon when Costi handed me back my house keys.

Costi and his team were not only incredibly talented and impressive in there work ethic, they were also extremely polite and always left everything very tidy and clean. A real bunch of professionals and really nice guys!

The gym equipment is being delivered on Saturday and we are looking forward to getting started.

Thank you all very much for doing a superb job and I look forward to your final invoice."

Garden Room with Storage Space

“We found the customer service to be both friendly and helpful at all stages ,Olly's various visits and designs, Donna's various communications and Costi's customer care on site. Indeed the entire building team were professional and skilled and have created a brilliant product……Costi and his guys work extremely hard and are proud of every Studio they build.

Whilst it's very early days we think that the completed studio will probably exceed our expectations. We haven’t entirely settled on the use of the main studio yet but the flexibility provided by the additional space is most welcome.

The appearance of the studio in the garden setting is very satisfying. We have emailed some of Costi's photo's onto several friends and their comments have all been extremely positive -who knows, you may even get a few more orders! We would certainly recommend Garden Spaces to prospective customers!

A quick note to say how superb your installation team are under Costi. I can't believe how much they have achieved in just a week!”

Syme