With over 45 years in real estate and a legacy of trust, results, and dedication, Mark Kloss brings unmatched experience to every client relationship. A Platinum Award Winner from 2020–2024 and consistently ranked in the top 1–3% of MLS production, Mark has proudly maintained over $20M in annual sales volume since 2020—proof of his proven track record and loyal client base. Check out what Mark's happy clients have to say.

Formerly a managing broker for 40 years, Mark's leadership experience means clients benefit from deep knowledge of contracts, negotiations, market conditions, and the intricate details that make or break a transaction. He skillfully uses the latest technology to streamline processes, enhance communication, and ensure contracts and negotiations are handled with speed, precision, and professionalism.

Today, he devotes 100% of his time to serving clients, family, and referrals, with a calm and steady presence that helps buyers and sellers feel confident every step of the way.

Backed by the cutting-edge tools and global network of @properties Christie's International Real Estate, Mark offers the perfect blend of seasoned expertise and modern technology. Whether you're a first-time buyer, long-time homeowner, upsizer, downsizer, or investor, Mark is passionate about helping you make smart, financially sound decisions.

A longtime resident of Arlington Heights and the Prospect High School area—where he's consistently produced record sales since 2011—Mark proudly serves clients across the Northwest Suburbs and the city of Chicago. He brings a personal understanding of the local communities, homes, and lifestyle that buyers and sellers truly appreciate.

When he's not working, you'll find Mark enjoying time with his grandkids, golfing, traveling, and supporting local businesses that help his community thrive.

Looking for a trusted guide in today's market? Reach out to Mark Kloss and let his experience work for you.

*MRED, LLC, based on closed sales data, 1/2011-12/2024
**#1 market share in Chicagoland based on closed sales volume data from MRED, 1/1/2018-12/31/2024

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