What Our Clients Say

Deciding to remodel your basement is a great step. It will provide you with hours of enjoyment, reclaim wasted living space AND add to the value of your home. The next step in the process is deciding who you want to do the job. Trusting the wrong firm to do the job can be a nightmare. I’ve seen the kind of work some companies try to pass off and it’s really bad. At G.C.M. Construction you have my personal guarantee that we will treat your job with the utmost care and professionalism. I want you to tell everyone who you invite into your home who did such a great job on your new basement. That means the world to me. If it’s not perfect, I’m not happy.

Guy is very creative, honest and responsive. He stays on top of the project and the contractors and he works as hard as he is able to make sure the project goes as planned. He hires excellent subcontractors. We are very happy with our basement. We would hire GCM again in a heartbeat.

Crisel ? Libertyville

I can?t speak more highly about Guy and his professionalism. Have you ever said you just wish you could find a great contractor and you would pay extra to ensure the work is done correctly? Well, Guy delivers all that without the extra cost. Guy designs and finishes each basement as if they were his own. During construction, I was amazed at all the little and big things that Guy did to ensure the basement was done right even though I had not specified it in the contract. Once you have a total price with Guy for the basement agreed upon, he does not skimp to save himself any money. He wants it done right! Every square inch of the basement is scrutinized by Guy to ensure it meets his quality review, which is a very high standard. Guy and his workers are very clean, considerate and professional. In short, he is the best contactor I have ever hired and you should do the same.

Gradman ? Northbrook

It went wonderfully! Guy was on the job every day and always made sure that I knew the plan on a week by week basis. I think we had a rather complicated remodel. Guy very patiently reworked the layout of the basement many times before my husband and I agreed on the final layout. Once the project was ready to go, Guy and his team worked diligently to rebuild our space. He worked with the town to install an egress window which met code while reducing our costs for installation. He was cost conscious throughout as items came up and was always fair with his pricing. His team was phenomenal. We upgraded our electrical and water lines. Everyone from GCM was very professional. Guy did a great job at maximizing the available footprint. We gained ceiling height by rerouting duct work and water lines. We now have a wonderful space for the kids to play!

I would happily work with Guy and GCM in the future. We had a good feeling about working with GCM from our first meeting and we are thrilled with the results!


We hired GCM to finish our basement and had a very good experience with them. Guy is good to work with and he is honest and responsive. Our project was completed within budget and on time. He always stays on top of the project and pays attention to details. The sub-contractors he works with are very trustworthy and did a fabulous job. We had to be away for about two weeks during the project and the basement work still went on without any issues. Also, Guy provided us a list of things that we were responsible for as an owner at the beginning of the project. This helped avoid any surprises during the course of the project and also helped a lot to make sure we did not cause any delays at our end.

Balakrishna – VERNON HILLS


?The project was completed on a tight? timeline and came in budget. GCM was professional and courteous and did their best to minimize their mess with lots of drop clothes and hanging plastic. Issues encountered along the way were addressed and rectified. Fantastic job.”

Scott & Dana, Deerfield

“We couldn?t be happier with Guy with regards to our finished basement. When Guy initially mentioned that ?all he does is basements?, we didn?t realize the significance of that statement. I had spent numerous hours trying to design my basement, but I struggled with several ?problem? areas. We bid the project out to several contractors, but only GCM was able to identify creative solutions to the problem areas. Guy has excellent design ideas and he is extremely dedicated to making sure his customers are happy with the results. We have happily recommended GCM to friends & family, and would recommend him to anyone who would like to have a beautiful basement. Contact Guy if you would like to see our basement we thoroughly enjoy it and love ?showing it off?.

Jim & Rachel – Grayslake

?We were thrilled with the work Guy and his team did for us. They were available to us with ideas and expertise every step of the way, from the initial design, to paint color and the finishing touches. They were very professional, clean and trustworthy. We just love our basement and would highly recommend Guy.?

Elizabeth, Hawthorne Woods

?G.C.M. Construction did a fantastic job on our basement. Guy was a part of the process from start to finish. Guy and his team were punctual, reliable, courteous and attentive to our needs. They built a beautiful basement and gorgeous tiled bathroom for us. It was a pleasure working with G.C.M. Construction and we couldn?t be happier. Job well done!?

Brian & Tanya, Hawthorne Woods

?We love our new basement living space with it?s music room, entertainment area, full bath, storage room, & closets.? The storage room and closet shelving were a main priority for us, and Guy and his carpenter, Robert, were helpful, and accommodating in building the spaces we requested.? Robert offered helpful suggestions, and Guy even took the time to help me shop for shelving?.

Jeff & Shelley, Round lake

??Guy was very responsive and very involved in all phases of the construction process.? He checked in with me every day when work was being done in the home.? We have especially high regard for his carpentry, electrical, and tiling subcontractors.? It was a pleasure to work with them, and they were very respectful and helpful.? We would highly recommend each of them.?

Steve, Gurnee

?We had our basement completely finished. GCM Construction listened to our need and provided the best solutions. We had a dark and empty basement before. We now have a bright and comfortable basement my entire family can enjoy. The basement is fantastic and we couldn?t be happier.?

Tim &Megan, Kildeer

Amazing results! We could not be more pleased with the end product and quality of workmanship from GCM. The basement has become the nicest room in our house and we are so excited to spend time in this beautiful space. Guy was very easy to work with and very open to our concerns and questions throughout the whole process. He gave us the autonomy to pick out what we wanted, but guided us with his extensive expertise to get the results we were looking for. On several occasions, he was able to recommend creative solutions to difficult basement problems. He checked in frequently and made himself available every step of the way. From the moment we met him, we trusted he could get the job done and it would be a good investment for us to work with him. His subs were professional, friendly, meticulous, and did excellent work. Guy truly is the basement expert and took our dream basement and made it a reality!

Marc & Jodi – Deerfield


“The finished basement is gorgeous. Working with Guy was great. He is a pleasure and helpful. Guy was also very responsive? much more responsive than any other contractor we have worked with. Guy estimated the basement would take a month and he met that estimate.”

Lucy & Joe, Northbrook