New Jersey Construction, Concept to Completion

You own land, or you have a project. You are not sure what is feasible, what it will cost, or how to get it approved and built. That is where we come in.

Cornerstone Builders Group takes projects from an idea and a piece of land through approvals, budgeting, and construction, to a finished building. We work with owners taking on their first development and with experienced developers who need a full execution team, across New Jersey, the Hudson Valley of New York,
and Florida.

One team, from the first decision to the last

Most firms enter a project after the hard early decisions are already made, and inherit whatever risk those decisions created. We start before design is locked, while the budget and the approvals can still be shaped, and stay accountable through construction and turnover. One team holds the budget, the schedule, and the quality standard from the first feasibility question to the certificate of occupancy.

What We Do

Pre-Development

We establish what your site can support and what it will cost before you are financially exposed: feasibility and parking studies, a preliminary budget and proforma, and the zoning and entitlement path to approvals.

Pre-Construction

We turn approvals into build-ready plans, bid the work to prequalified subcontractors, secure permits across every agency in play, and get you shovel-ready with scope locked and pricing confirmed.

Construction Management

We manage every trade, dollar, and day from mobilization to certificate of occupancy, as your construction manager or your general contractor, with disciplined controls and transparent reporting the whole way.

WHY CORNERSTONE

Built to keep projects under control

What we build

Multi-family and mixed-use, commercial and fit-outs, healthcare, hospitality, and custom homes.

Trusted across the region

Owners and developers across New Jersey and beyond rely on Cornerstone to take their projects from concept to completion. Our client work spans restaurants and retail, medical and dental offices, senior living and pediatric therapy, corporate space, and multi-family development.

Start with feasibility

Bring us a site, an idea, or a set of drawings. We will tell you what is feasible, what it will cost, and whether it is worth pursuing, before you are committed.

Partial Client List

What our clients are saying about us:

EXCELLENT

Based on 22 reviews

Rich Molfetta

This company is detail oriented, proactively communicates, and does fantastic work. I've used them for two larger projects for my Healthcare company and I have been extremely satisfied.

Anthony Menicola

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.

MARIA GROSS

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!

Stephen Russo

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!

Kelly DiBenedetto

If you want a contractor who will listen, collaborate and ultimately deliver amazing results, go with Cornerstone. Leo, Frank, Al and the entire team are amazing. Highly highly recommend!

Samantha Turton

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!

Nicole Khezzar

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!!!