Smart Strategy
MBA-trained and a former math teacher, I bring structure and clarity to every move you make.
Mark Sandidge
Mark Sandidge | REALTOR® | Keller Williams Realty Consultants
MBA – Georgia Tech | M.A. – The Ohio State University | B.S. Mathematics – Gannon University
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With a deep foundation in education and business, Mark Sandidge brings a unique blend of analytical insight and strategic expertise to the world of residential real estate. A proud MBA graduate from Georgia Tech with additional degrees from The Ohio State University and Gannon University, Mark combines data-driven decision-making with a strong passion for helping clients navigate life-changing real estate transactions.
As a full-time REALTOR® with Keller Williams Realty Consultants, Mark specializes in residential sales, contract negotiations, and real estate investing. Whether you're buying your first home, relocating to Metro Atlanta, or selling an investment property, Mark offers tailored strategies backed by in-depth market research and a strong understanding of the local landscape.
His focus areas include Metro Atlanta, Smyrna, Mableton, Marietta, Kennesaw, Sandy Springs, Dunwoody, Roswell, Snellville, Stone Mountain, and Decatur. Known for his professionalism, responsiveness, and client-first mindset, Mark is committed to making the buying or selling experience seamless and rewarding.
Client-First Focus
You’ll never feel lost—I guide every step with clear communication and real market insight.
Local Expertise
From Roswell to Mableton, I know Atlanta’s neighborhoods—and how to help you win in them.
A numbers guy with a people-first approach
Meet Mark Sandidge
I’m not your average REALTOR®. With a background in teaching math and a Georgia Tech MBA, I bring strategy, structure, and clear communication to every transaction. Before real estate, I worked with Fortune 500 companies in customer success—and that experience shaped the way I work with my clients today: with transparency, responsiveness, and a real commitment to helping people win.
Why I Do This Work
Real estate is personal—and so is my approach
Helping clients buy or sell a home isn’t just a job for me—it’s a privilege. I know how stressful the process can be, so I bring market knowledge, negotiation skills, and a calming presence to keep things moving smoothly. Whether it’s your first place, your forever home, or your next investment, I’m here to help you get there with confidence.
​Beyond the Business​
A glimpse into my world
Client Success Stories
Hear From Our Happy Homeowners
