About Apex Realty Services Group, LLC

Apex Realty Services Group, LLC delivers professional, full-service real estate and property management across St. Clair and Madison counties in Illinois. Specializing in single-family and multi-family homes, we combine a top-tier management system with automated rent collection, digital leases, and prompt, transparent communication.

Tenants appreciate our caring, family-oriented approach and fast maintenance response, while owners benefit from ethical practices, a trusted vendor network, and data-driven property solutions. Whether leasing, buying, selling, or expanding an investment portfolio, Apex provides reliable expertise and personalized service to protect and grow your real estate interests.

MANAGEMENT SERVICES

justin hart

Justin Hart is a dedicated real estate professional, investor, business owner, and proud father of three teenage girls who keep him constantly on the go. Whether it’s cheering from the sidelines at soccer games, softball fields, or gymnastics and cheer competitions, family is at the center of everything he does. Alongside his wonderful wife, Justin embraces the busy and rewarding journey they call life together.

Justin entered the real estate industry with one goal in mind — to help people navigate the home buying and selling process without feeling pressured. He believes every client deserves honesty, guidance, and a trusted advisor who truly has their best interests at heart. Over the years, he has helped countless clients buy and sell homes, and many of those professional relationships have grown into lasting friendships.

As his passion for real estate continued to grow, Justin expanded into real estate investing through rehab projects and rental properties. That experience gave him a deeper understanding of the investment side of the business and inspired him to take the next step in his career by opening APEX Realty Services Group, LLC.



Today, Justin helps investors manage and grow their portfolios while also mentoring and training real estate brokers who are looking to build successful careers of their own. His combination of real-world investing experience, customer-first mindset, and dedication to helping others has made him a trusted name in both real estate sales and property management throughout the area.

jeremy mixen

Jeremy Mixen is a service-driven real estate professional focused on helping clients navigate residential buying and selling with clarity and confidence. Known for his strong work ethic and customer-first mindset, Jeremy built his career delivering five-star service—earning a reputation for clear communication, honest guidance, and dependable follow-through.

Before real estate, Jeremy developed years of experience in high-pressure, detail-focused client service, managing complex timelines and problem-solving with precision. He brings that same structure and care to every transaction: helping buyers evaluate options, negotiate strategically, and move forward with confidence.

When it comes to selling property, Jeremy takes a hands-on approach to preparing a home for market, pricing with purpose, and creating a plan to attract qualified buyers. From coordinating key details to keeping the process organized and transparent, his goal is simple: reduce stress, protect your interests, and help you achieve the strongest possible outcome