Meet Mark

Mark Sandidge is a strategic real estate advisor with The Agency Atlanta, representing executives, business owners, investors, and professionals who value discretion, clarity, and disciplined execution.

With an MBA from Georgia Tech, a Master’s degree from The Ohio State University, and a degree in Mathematics from Gannon University, Mark approaches every transaction through a financial and analytical lens. He evaluates property as both a lifestyle decision and a capital asset, helping clients see the big picture while staying focused on cost, leverage, and long-term positioning.

Prior to real estate, Mark spent seven years in corporate leadership within Fortune 500 B2B environments, including serving as a Customer Success Manager at T-Mobile for Business. He managed multi-million-dollar strategic client portfolios, advised executive decision-makers on high-value initiatives, and operated in environments where protecting capital, structuring solutions, and navigating complexity were essential.

A former educator and coach, Mark leads with composure and preparation. A marathon finisher, skydiver, and daily chess competitor, he believes disciplined thinking and calculated risk separate good outcomes from exceptional ones.

A devoted husband and father of four, Mark measures success by both legacy and impact. His work is grounded in the belief that ownership, stability, and opportunity shape generations.

For clients seeking elevated representation, financial clarity, and structured execution in Atlanta’s most competitive markets, he delivers.