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Jennifer Greer
Coldwell Banker Brown Realtors
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Monica Mahtani
Coldwell Banker Brown Realtors - Belleville
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34 South 87th Street Belleville
In 2022, the process of buying a house can be maddening and overwhelming (to say the least). My husband and I had been searching high and low for a home. I had gotten to the point of dreading reaching out to agents about a house. A lot of them seemed to not listen to what we were looking for and constantly wanted to show us homes out of our price range. So, when I called about a house that had just posted I was expecting that. Boy was I wrong. Monica quickly got back to me and instantly I knew something was different about her. She went over the home in great detail. She didn't just read me back the listing, she gave me the story of the home. We already loved it but she made us fall even more in love. She was representing the seller but took us on as the buyer. She made the whole thing feel easy. She got our offer in quickly and helped secure our dream home. Bless her for always being there too. Answering all my panicked texts, giving us the best recommendations for inspectors/plumbers/electricians, and really giving us a sense of the neighborhood we were moving to. It didn't feel like working with other agents. It felt like an old friend was helping us buy a home. In this crazy market, this is the lady to help you find your next home. She is the gold standard. My family can not thank her enough for everything she has done and everything she is still doing!!
From 33 reviews overall

Christie Gassen

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921 Chesapeake Junction Lane O'Fallon
Selling a home can be an emotional journey, but Christie made the entire experience feel so much easier. From day one, she treated us like more than just clients—she genuinely cared about our family, our goals, and what was best for everyone involved. Her dedication, expertise, and hard work resulted in our home being under contract incredibly quickly, but what stood out most was the compassion she showed throughout the process. She was always available to answer questions, offer guidance, and provide reassurance when we needed it. Her kindness, patience, and attention to detail made us feel supported every step of the way. It's rare to find someone who combines professionalism with such a genuine heart. We are so grateful for everything she did for us and for the care she showed to both parties throughout the transaction. We couldn't have asked for a better experience and would wholeheartedly recommend her to anyone looking to buy or sell a home.
678 Prato Ct Caseyville
We had an outstanding experience working with Christie. What truly sets her apart is her compassion and genuine care for everyone involved in the transaction. She consistently treated us with respect, understanding, and professionalism, helping create a positive and cooperative experience from start to finish. Her knowledge and expertise were evident throughout the process, but it was her kindness, patience, and ability to see situations from all perspectives that made the biggest difference. She worked tirelessly to ensure that everyone felt heard, informed, and supported while still advocating for the best possible outcome. Buying or selling a home can be stressful, but Christie has a unique ability to bring calm and confidence to the process. Her integrity, communication, and dedication are second to none. We are incredibly grateful for her guidance and would highly recommend her to anyone looking for a real estate agent who leads with both professionalism and heart.
1500 State Street Rd Belleville
Christie demonstrated accurate market knowledge, great home preparation guidance, great communication and responsiveness, and she traversed through hurdles and surprises quickly and professionally.
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St. Clair County2026City Winner
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O'Fallon2026City Winner
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Troy2026Avg. sale price
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