Brian Dieffenbach

Chief Operating Officer
License#:
Luxury Homes Certification
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Commercial and Luxury Property Specialist

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About Me

Brian's journey into real estate is one of passion, purpose, and vision. After a 25-year career as an Artillery Officer in the U.S. Army, Brian transitioned into the real estate industry, bringing extensive leadership experience and service dedication. A licensed agent in Kansas and Missouri, he has been investing in real estate in the Kansas City area since 2007, focusing on commercial and luxury home clients. In 2023, Brian and his business partner were awarded the Realty ONE Group Esteem franchise, where he now serves as COO. His leadership philosophy emphasizes collaboration, empowerment, and creating an environment where others can thrive. His vision aligns seamlessly with Realty ONE Group's mission to open doors, inspire dreams, and build lasting connections. Kansas City is not just where Brian works; it's where he calls home. Born and raised in Overland Park, Kansas, he has lived and worked in places like Germany, Hawaii, Dubai, and Alaska during his military career, but Kansas City has always remained his anchor. His deep connection to the area fuels his commitment to its communities and understanding of the local real estate market.

See What The UNbrokerage in Kansas City Has To Offer


Realty ONE Group Esteem offers clients a fresh, people-first approach to real estate in Kansas City. With deep local expertise and a commitment to truly understanding your goals, their agents focus on building relationships, not just closing deals. From cutting-edge marketing that gets your home noticed to skilled negotiation that protects your interests, they’re here to open doors, helping you make confident, informed decisions and turning your next move into a meaningful milestone.

Are you thinking of joining Realty ONE Group Esteem?


Realty ONE Group Esteem is a modern real estate brokerage built for bold agents and savvy clients who want more than the status quo. We combine 100% commission with full-service support, empowering agents to grow their business while delivering personalized, purpose-driven service to everyONE we serve. Rooted in community, driven by innovation—this is real estate with heart.

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