Chris Long

Co-Founder, Partner

Chris co-founded Radius out of a desire to unite his successful software and technology career with his passion for real estate. Since 2009, he’s helped clients throughout St. Louis significantly reduce overhead and increase profits, leveraging cutting-edge technology to find solutions to property management issues.

While he works with a wide array of clients, Chris particularly enjoys helping first-time homebuyers or investors make smart financial decisions that maximize their returns and prepare them for the challenges of home ownership. Outside of the office, Chris spends time with his family, tends to his four beehives, and stays up-to-date on emerging technologies.



Adam Kustra

Co-Founder, Partner, Managing Broker

Adam currently oversees Radius’ property management arm. After 15 years in the restaurant industry and five years in property management, he partnered with Chris to achieve their shared vision of a full-service brokerage for St. Louis. A proud native son, he uses his knowledge of his hometown to simplify real estate for property owners and renters.

Outside of work, Adam is an active participant in local and state politics. He served Bernie Sanders’ presidential campaign as an alternate delegate to the DNC and as Missouri’s director for political outreach. Adam is now the president of Mobilize Missouri, a grassroots organization for progressive activism, and also ran for State Representative of Missouri’s 81st district in 2016.



Leigh Maibes

Sales Team Lead, Real Estate Agent

Leigh is proud to head Radius’ sales team. In her 10 years as a real estate agent, Leigh has sold more than 150 commercial and residential properties and completed rehab projects throughout Tower Grove South and Tower Grove Heights. She also facilitated the sale and transfer of St. Louis’ last remaining Native American mound to the Osage Nation.

Leigh describes herself as “a real estate agent’s agent,” acting as a full-service consultant to her investor partners. She participates in acquisition, design, and construction management while overseeing sales and marketing efforts for a number of investment properties. In her spare time, Leigh enjoys gardening, visiting the weekly Soulard Farmer’s Market, engaging in grassroots activism, and immersing herself in all things cryptocurrency. 



Savannah Zapp

Real Estate Agent

Savannah Zapp joins Radius as a real estate agent after several years in customer service management. She brings a unique understanding of her clients’ needs, as well as a creative approach to problem-solving and the tenacity to find solutions. A resident of Central West End, Savannah spends much of her time with her children and her dog, who sometimes joins her on visits with clients.






Madeline Buthold

Leasing Coordinator

A lifelong resident of St. Louis, Madeline entered real estate to help new arrivals and longtime residents alike find quality housing at affordable prices. With a native’s perspective, she guides her clients with thorough knowledge of the city’s many neighborhoods and enthusiasm for the things that make her hometown special. When she isn’t helping clients, Madeline works to improve St. Louis as the Democratic Committeewoman for the city’s 14th Ward.