
Monica Mahtani
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Buyer of 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!!
Jennifer Greer
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Alyssa Boyer
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Christie Gassen
Buyer's Agent | REALTOR® Broker | Sales Manager
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Seller of 212 Whitehall Dr, O'Fallon
Christie is not only a wonderful person, but a great realtor with so much insight, knowledge and outstanding work ethic. There were plenty nights her and I were texting at 11PM. Christie brought alot of experience to the table and had plenty of references to give me in order to get some repairs done. Not only her work ethic, but her genuineness is top tier. From the time we prepped for listing, through the closing day, she talked me through any concerns I had. I dont think we could have listed and closed in roughly 30 days without Christie.
Buyer of B/720 Harbor Woods Drive, Fairview Heights
Working with Christie to buy my new home was an absolute pleasure from start to finish! She was incredibly professional, knowledgeable, and always available to answer my questions, no matter how small. She made what could have been a very stressful process feel smooth and easy. I highly recommend Christie Gassen for everyone.
Seller of 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.
County Winner
St. Clair County2026City Winner
O'Fallon2026City Winner
Troy2026