John Karg

John Karg is the founder of Karg Mainstreet Advisors, a Washington, DC-based firm specializing in buyer representation, tenant advisory, and strategic business acquisition services. With a background in taxation, real estate, and financial services, John helps entrepreneurs and investors identify, evaluate, and acquire Main Street businesses across a variety of sectors. His approach combines hyperlocal market knowledge with data-driven search strategies to uncover off-market opportunities and guide clients through the acquisition process. John’s practice emphasizes buyer advocacy, transparency, and client education. He also offers subscription-based business search services for clients seeking professional services, relocatable businesses, and franchises. As a Navy veteran and former financial advisor, John brings a strategic, risk-aware mindset to every engagement. He is an active IBBA member and a committed resource for DC-area entrepreneurs and business buyers nationwide.

Specialty Areas

• Business Services
• eCommerce
• Food & Beverage
• Retail Trade