Cornerstone Builders Group - Franklin Lakes, New Jersey

Stephen R.

We recently completed a 4-unit mixed-use apartment building in Ridgewood, NJ, with Cornerstone Builders Group as our construction management partner, and I couldn't be happier with the outcome. The Cornerstone team managed every phase of this project with precision and professionalism, ensuring that both the residential and commercial aspects were designed and built to the highest standards.
Their expertise in mixed-use development was evident from start to finish—they handled everything seamlessly, from site preparation to final finishes. The project stayed on track and within budget, even with some challenging permitting requirements unique to Ridgewood. The Cornerstone team's commitment to quality, transparency, and meeting our project goals was outstanding. I would highly recommend them to anyone looking for reliable and skilled construction management!

MARIA G.

Working with Cornerstone Builders Group has been a fantastic experience. They led our predevelopment project management for our property on Hope Avenue, and I'm beyond pleased with the results. The Cornerstone team assembled a skilled development team perfectly tailored for our project’s unique needs, managing everything from assembling the right professionals to providing a comprehensive density and proforma analysis for our planned 22-unit building. They oversaw every step leading to site plan approval, ensuring smooth coordination with local authorities and complete transparency in cost management.

Incredibly, all this was accomplished in less than a year, a timeline we hadn’t expected to meet. Their expertise and attention to detail made all the difference, and I couldn’t recommend them more highly!

Anthony M.

Cornerstone Builders did an outstanding job bringing our vision for a state-of-the-art wellness center in Mahwah, NJ, to life. This was no ordinary project—it was about creating a sanctuary where luxury and wellness intersect, and the Cornerstone team truly exceeded our expectations. Together we managed every aspect, from construction planning to the final touches on unique amenities like our red-light sauna, cold plunge, and high-tech bio circuit.

The facility is built to inspire, and thanks to Cornerstone’s attention to detail, every element seamlessly integrates, from the Pilates and semi-private training areas to the full-court basketball setup and golf simulator. Their expertise and commitment to quality craftsmanship are evident throughout. The result is a wellness center that is as functional as it is stunning, creating an environment our members.

Samantha T.

Cornerstone recently helped us remodel our Edward Jones office and we couldn’t be happier with the results! The new window really transformed the feel of the space and helped brighten everything up! They were a pleasure to work with throughout the process. They communicated with us every step of the way, and even followed up with us a few times afterwards to make sure we were happy with the end result. I would absolutely recommend their services!

Jen F.

Cornerstone Builders Group completed a full remodel of a warehouse in Hackensack to create an indoor vertical farm. The communication was seamless, answering all questions quickly and professionally. The work performed was impeccable and adhered to proposed timeline. Frank and Leo are experts in their field, a pleasure to work with and I would gladly hire them for our next project.

Anastasia P.

I have had the pleasure to work with Cornerstone Builders Group on many projects over the past few years. They are always professional, punctual, and bring their knowledge and confidence to every project. I look forward to working with them on many more projects to come!

Michelle B.

Cornerstone was first class from start to finish. Leo, Frank, and the team are highly responsive and made the process of building our state-of-the-art office exciting and run smoothly. I felt they were not only invested in the project but invested in myself and the success of my business. I highly recommend Cornerstone Builders Group for your next project!

Nicole K.

Where to start! From the moment we first met with Leo and Frank in their office to working daily with Mike and the rest of the Cornerstone team we couldn't have been more pleased. They are beyond professional, trustworthy, knowledgeable and simply experts in their field. Having never built a home, my husband and I had no idea what to expect. They walked us through the entire process, communication was exceptional, answered all of our questions and were a pleasure to work with. We trusted them with building our Dream Home and they exceeded our expectations. Cornerstone has our highest recommendation- would work with them again in a heartbeat!!!