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.

This month, we're celebrating Joe Corona, Carrie Cunningham, Lauren Pruitt, Tracy Bunnell, and Henslee Lockridge for the...
06/15/2026

This month, we're celebrating Joe Corona, Carrie Cunningham, Lauren Pruitt, Tracy Bunnell, and Henslee Lockridge for their dedication and impact at Cornerstone Contracting Group.

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

Currently on site for a commercial interior renovation. This is the underground rough-in phase... the work that happens ...
06/11/2026

Currently on site for a commercial interior renovation. This is the underground rough-in phase... the work that happens before anything looks like progress.

Following along as this one unfolds.

From the Cornerstone Portfolio — Clearwave Atlanta HQ | Dunwoody, GA15,543 SF. 4 months. Gut to move-in ready. When Clea...
06/09/2026

From the Cornerstone Portfolio — Clearwave Atlanta HQ | Dunwoody, GA

15,543 SF. 4 months. Gut to move-in ready. When Clearwave needed a headquarters that matched their collaborative culture, we delivered a complete tenant improvement at 400 Perimeter Center Terrace — working alongside JLL Project Management and designer Nelson to bring every detail to life.

The highlights:
• Open-to-structure ceiling with linear LED lighting at reception
• Reclaimed wood accent wall and bold brand blue throughout
• Repurposed demountable glass wall systems for all office fronts
• Tempered glass conference rooms and tenant entry
• Polished concrete floors and panoramic Perimeter skyline views in the employee lounge
• Pool table, break area, and soft seating — a space people actually want to show up to

This is what happens when the entire project team is aligned from day one.

Help us wish Joe a very Happy Birthday! 🎉
06/05/2026

Help us wish Joe a very Happy Birthday! 🎉

We couldn't wait until tomorrow so we celebrated early!Today the Cornerstone Contracting Group team surprised our founde...
06/04/2026

We couldn't wait until tomorrow so we celebrated early!

Today the Cornerstone Contracting Group team surprised our founder Joe with an early 40th birthday celebration and we made sure it was one for the books! Tie-dyed shirts, a Grateful Dead theme, dancing bears, cupcakes, and cake… because Joe deserves nothing less.

Tomorrow is the big day… Joe officially turns 40! But we couldn't let him walk into his birthday without already knowing how much this team loves and appreciates him. His vision and dedication built Cornerstone from the ground up and we are so grateful every single day.

Happy Early Birthday, Joe… Joe's NOT Dead!

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.

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

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

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