Cornerstone Contracting Group

Cornerstone Contracting Group Partnership is our foundation Formed in 2014, Cornerstone Contracting Group, Inc.

(Cornerstone) set out to become a leader in the commercial interior sector of the construction industry. With over 35 years of combined experience in construction management, primarily in the commercial interiors sector, founders Joseph Corona and Michael Summers realized that strong, quality driven firms were needed to improve the overall project delivery method of tenant build outs in the Greate

r Atlanta market. With the goal of delivering quality construction and superior project management, Cornerstone has become an industry leader in delivering traditional tenant build out projects on time and under budget. Cornerstone has completed over $35 Million dollars’ net worth of projects totaling approx. 3,000,000 SF. Cornerstone’s consistent track record of completing projects under budget and ahead of schedules is a true illustration of their mission to provide quality construction and superior project management. Cornerstone is gaining recognition among some of Atlanta’s largest REITS and Commercial Real Estate Company’s in the ever growing Atlanta market. What sets Cornerstone apart from their competitors in the industry is their strength in traditional construction methods and their strong abilities in both preconstruction and value engineering services. With industry trends growing and the demand for quality driven commercial interior contractors on the rise, Cornerstone is dedicated to forming strong teams with subcontractors, owners, and design professionals throughout Atlanta to become a market leader in the commercial interior market.

Help us wish Henslee a very Happy Birthday! 🎉
06/02/2026

Help us wish Henslee a very Happy Birthday! 🎉

Back in early 2022, our team took on an 11,077 SF tenant improvement for Boxlight at 2750 Premiere Parkway and we couldn...
05/28/2026

Back in early 2022, our team took on an 11,077 SF tenant improvement for Boxlight at 2750 Premiere Parkway and we couldn't be prouder of how it turned out.

The goal? Transform a dated flex warehouse space into a modern, high-functioning office that reflects Boxlight's identity as a leader in presentation technology. That meant selective demolition, all-new MEP systems, custom glass partitions, and a striking blue accent wall in the reception area, all while keeping business disruptions to a minimum.

The result is a space that balances open collaboration zones, private meeting rooms, and a comfortable break room, all wrapped in a clean mix of acoustic ceilings and exposed structure.

Big shoutout to Project Manager Josh Faglier, Superintendent Eddie Lingerfelt, and our incredible partners at The Simpson Organization, Cresa, and Nelson for making this one a success.

Thinking about refreshing your office or commercial space? We'd love to help bring your vision to life.

Please join us in wishing JC a Happy Birthday!We appreciate the dedication and hard work you bring to the team every day...
05/25/2026

Please join us in wishing JC a Happy Birthday!

We appreciate the dedication and hard work you bring to the team every day, JC. Hope you enjoyed your birthday and Memorial Day!

Wishing you continued success in the year ahead!

Today isn't just a day off. It's a day to remember. 🇺🇸At Cornerstone Contracting Group, we build for the future, but we ...
05/25/2026

Today isn't just a day off. It's a day to remember. 🇺🇸

At Cornerstone Contracting Group, we build for the future, but we never forget those who fought to protect it. This Memorial Day, we honor every service member who gave their life so we could live ours. Their sacrifice is the foundation everything else is built on. Hug your family a little tighter today. Say a name. Say thank you. From our CCG family to yours, Happy Memorial Day.

This month, we're celebrating Josh Faglier, Shelby Tibbitts, and Donny Wallace for their dedication and impact at Corner...
05/22/2026

This month, we're celebrating Josh Faglier, Shelby Tibbitts, and Donny Wallace for their dedication and impact at Cornerstone Contracting Group.

Josh, your 10 years speak for themselves. A decade of leadership, expertise, and commitment that this company is genuinely built on. We don't take that for granted — thank you for everything you've given to Cornerstone.

Shelby, 3 years in and you wear a lot of hats — from how Cornerstone shows up in the world to making sure our team is taken care of on the inside. Both sides of that matter, and we're glad to have you.

Donny, 2 years in and you've already proven what consistency and hard work look like in the field. The reliability and effort you bring every single day sets the standard and it does not go unnoticed.

We're grateful to have all three of you as part of Cornerstone.

05/20/2026

Move-in day is a wrap! The team has been busy getting Booth 232 all set up at the BOMA Show 2026 here at the Cobb Convention Center — and we are READY for tomorrow!

If you're attending the BOMA Show tomorrow, come find us at Booth 232 — we'd love to connect, and make sure you stop by for our awesome raffle.

See you tomorrow!

We love seeing a spec space come together exactly the way it should.Cornerstone Contracting Group partnered with JLL t...
05/14/2026

We love seeing a spec space come together exactly the way it should.

Cornerstone Contracting Group partnered with JLL to complete a 2,757 SF speculative office build-out at North Terraces in Atlanta, GA—and this one is a great reminder of what thoughtful preconstruction and intentional design can produce.

From early collaboration with SMART Interior Group and Barrett, Woodyard & Associates through final delivery, our team worked to ensure every decision served both the design vision and the future tenant experience. The goal was simple: create a space so well-executed that the right tenant walks in and can picture themselves there immediately.

Some of our favorite features:

• Laminate privacy slat wall at the entry—defining the space without closing it off
• Exposed ceiling paired with decorative modern lighting that sets the tone from the moment you walk in
• Quartz countertops and upgraded cabinetry hardware that bring a high-end feel to everyday shared spaces
• A dedicated conference room and fully equipped Break Room anchoring the layout
• A flexible mix of private offices and open collaboration areas built for how people actually work today

Proud of the way this one turned out—and grateful for a great partnership with JLL, SMART Interior Group, and Barrett, Woodyard & Associates.

Huge shoutout to the team that made it happen:

• Joe Corona – Project Executive
• Claire Speaks – Project Manager
• Eddie Lingerfelt – General Superintendent
• Tracy Bunnell – Superintendent

🌸 Happy Mother's Day from all of us at Cornerstone!Today we want to take a moment to celebrate the incredible mothers on...
05/10/2026

🌸 Happy Mother's Day from all of us at Cornerstone!

Today we want to take a moment to celebrate the incredible mothers on our team. The women who show up every day with strength, grace, and heart. You inspire us in ways you may not even realize.

To every mother, those raising little ones, those who've done it for years, and those who have done it all, we see you, we appreciate you, and we celebrate you today and every day.

Happy Mother's Day! 💕

The field is where our work truly comes to life — and we are so proud of the men who show up every single day and build ...
05/08/2026

The field is where our work truly comes to life — and we are so proud of the men who show up every single day and build something great. Today, we get to celebrate three of the absolute best in the business.

Eric Goss — Promoted to Superintendent III
Eric, your commitment, work ethic, and care for your crew are a true reflection of the Cornerstone standard. We are incredibly proud of the leader you have become.

Andrew Reed — Promoted to Superintendent III
Andrew, your growth and leadership on the jobsite have been outstanding. You lead with confidence and character, and this team is better for it.

Doug Rice — Promoted to Senior Superintendent
Doug, your experience, wisdom, and steady presence in the field are invaluable. You set the standard for what great leadership looks like on a jobsite, and we are so proud to recognize you today.

Eric, Andrew, and Doug— these promotions represent hard work, sacrifice, and showing up when it counts. You represent everything Cornerstone Contracting Group stands for, and we could not be prouder to call you part of this family.

Every great company is built on the strength of the people working behind the scenes — and ours are truly exceptional. T...
05/07/2026

Every great company is built on the strength of the people working behind the scenes — and ours are truly exceptional. Today, we are overjoyed to celebrate two incredible women who make Cornerstone Contracting Group a better place each and every day.

Carrie Cunningham — Promoted to Director of Finance

Carrie, your expertise, integrity, and steady leadership have been the backbone of so much of what we do. You bring a level of care and excellence to your work that inspires everyone around you. This promotion is so deeply deserved, and we are grateful beyond words to have you on this team.

Shelby Tibbitts — Promoted to Marketing & People Manager

Shelby, you bring creativity, warmth, and a genuine love for people to everything you do. The energy and heart you pour into Cornerstone shows up every single day — and now your title finally reflects it. We cannot wait to see you flourish in this role!

Carrie and Shelby — thank you for showing up with grace, dedication, and excellence. Cornerstone is stronger, warmer, and better because of you both. Here's to you!

Address

889 Franklin Gateway Suite 180
Marietta, GA
30062

Opening Hours

Monday 8am - 5pm
Tuesday 8am - 5pm
Wednesday 8am - 5pm
Thursday 8am - 5pm
Friday 8am - 5pm

Telephone

+17705752642

Website

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