Meet Kristen Brenner, Principal Broker

Kristen Brenner, a Florida Keys native, graduated from Washington State University in 1997 as an Interior Designer. During that time, her mother and father, Wayne and Elaine Brenner who established Brenner Realty in 1977, encourage her to become a licensed real estate agent which she achieved.

Kristen continues to be one of the Top 10 Realtors® in the Marathon area for the last 10 years. And no individual agent has sold more real estate on Duck Key than Kristen!

After 7 years of mastering the Middle Keys market with two local firms, she ventured on her own in 2017 to provide a more personal home buying and selling experience to the market place.

She re-opened Duck Key Realty under a new name, Duck Key Real Estate Co, and formed two new companies in Marathon: Florida Keys Real Estate Group and Vacation Rentals of the Florida Keys, both serving unique needs in the Florida Keys community.

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EXPLORE POPULAR FLORIDA KEYS NEIGHBORHOODS

Margie Casey
It’s rare to find someone in real estate as tireless, selfless, and genuine as Margie. She doesn’t approach her work with the goal of making a sale—she approaches it with the goal of helping people. Every conversation, every showing, and every bit of advice she gave was focused on what was truly best for me, whether that meant buying a home or simply learning more about the process. Margie spent an incredible amount of time and effort guiding me, not because she wanted to close a deal, but because she genuinely cared. Her patience, honesty, and dedication are unmatched. If you’re looking for someone who will always put your interests first, educate you, and truly go above and beyond, Margie is that person. She’s not just a phenomenal agent—she’s a wonderful human being.
Margie Casey
We can’t say enough great things about our Duck Key listing agents, Kristen Brenner and Margie Casey. From the moment we listed our home, they were professional, responsive, and completely committed to selling our house. Even when the market slowed, Kristen and Margie never stopped working to sell our home. Their deep knowledge of the Duck Key market, attention to detail, and constant communication made the entire process smooth and stress-free. If you’re looking for hardworking, results-driven listing agents, we highly recommend Kristen Brenner and Margie Casey— they truly go above and beyond!
Margie Casey
SuchI had a wonderful experience working with this real estate firm! From the very beginning, they were welcoming, professional, and truly helpful throughout the entire home-buying process. Margie and Kristen are incredibly passionate about what they do and it shows. They were caring, responsive, and supportive every step of the way. I felt like I was in great hands the whole time. I highly recommend this team if you're looking to buy or sell a home. Love working with them! a great team to work with.
Margie Casey
We had an outstanding experience working with Kristen Brenner and Margie Casey. Kristen helped us find the perfect home in Duck Key, and we couldn't be happier. Her years of experience and deep knowledge of the Duck Key and Marathon market were clear from the very beginning. Kristen and Maregie were both professional and personable throughout the entire process—from our first conversation all the way through closing and even after. They truly went above and beyond to make sure everything went smoothly, and her guidance made a potentially stressful experience enjoyable and exciting. If you’re looking for real estate expertise in Duck Key, Marathon, or the surrounding areas, we highly recommend reaching out to Kristen & Margie. They are simply the best!

Our Florida Keys Realtors

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11287 Overseas Highway, Marathon, FL, 33050
 (305)-783-3395

Contact kristen brenner

Monday - Friday  8:30am - 4:30pm

Saturday & Sunday by Appointment

Kristen Brenner, Principal Broker

Florida Keys Real Estate Group

11287 Overseas Highway

Marathon Florida 33050

Phone (305)-783-3395

flakeysrealestategroup@gmail.com