John Brock (pictured above) and Marie Davis started Brock Insurance Agency 50 years ago. (Photo: Contributed)

For the heads of Brock Insurance Agency, Mark Brock and Dana Davis, being in business for 50 years is a testament to the company's past leadership and its clients. 

“Over the last 50 years, the insurance industry has gone through a tremendous transformation, but the successful sustainability of our business has and will never change,” Mark Brock, president of the business, said in a prepared statement. “It’s the value we put in our relationships with our clients that has made our business. My father and brother, Paul, were so instrumental in teaching all of us this.”

Mark Brock and Dana Davis' parents—John Brock and Marie Davis—started the business in 1963, and from the beginning, the business' core has been about relationships and strong customer service, leaders said. 

(From left to right) Dana Davis, Marie Davis, Paul Brock and Mark Brock have all served as leaders of Brock Insurance Agency at one time during the past 50 years. (Photo: Contributed)

Mark Brock's brother, Paul Brock, headed up the business from 1983 to 2008, when he died.

The family business has now extended into a third generation, with Ramsey Brock and Keith Davis joining. 

The 50-year mark is a celebration of Paul, John, Marie and the clients the business has served for five decades, Mark and Dana said. 

When John and Marie ran the business, home deliveries, Christmas parties and fish fries for customers were common. And today, Dana and Mark said they keep similar efforts alive. 

"We get out and see our customers all the time," Davis, who is the company's senior vice president, secretary and treasurer, said. "We don't do everything by phone or email. We're constantly in their offices."

The Rossville, Ga., agency started with just John and Marie and a handful of clients, but now, the business has 23 employees and between 1,400 and 1,500 clients. 

Over the years, the company has developed a niche in construction insurance and bonding, and leaders also make an effort to keep active in the community.

In Hamilton and Walker counties, employees of the agency have supported local organizations such as the Greater Chattanooga YMCA, Boys & Girls Club of Chattanooga and LAUNCH Chattanooga.

“I am so proud of our history, our clients and our staff,” Mark Brock said in a prepared statement. “Our goal is for the agency to be doing the exact same things we’re doing now in another 50 years.”