Betsy S.
4/25/2022
We have worked with JC Lilly a couple of times, with great results each time. A few years ago, Jeanie helped up replace every window in our 1893-built coachhouse (each window had slightly...
JC Lilly Windows and Doors
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(130)
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2020 N California Ave Ste 195
Chicago, IL 60647
J.C. Lilly Windows and Doors, established in 2007 by Jean Frankowski, has successfully completed thousands of window and door projects across Chicago and its suburbs. The company is dedicated to offering customers an exceptional experience by providing high-quality products and straightforward explanations, tailored to fit various budgets.
Committed to details and customer satisfaction, J.C. Lilly focuses on installing the best products according to manufacturer specifications, while treating clients with care. The team prides itself on clear communication and ensuring projects are handled efficiently and effectively, making the window replacement process as smooth as possible.
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Reviews
4.5130 reviewsPatrick G.
6/10/2025
I highly recommend JC Lilly. They offered a far superior window than the cheaper competition at a better price. Easy process from start to finish. Will use again for any window projects in the...
Brandon N.
3/4/2024
Good afternoon! I reached out to this company around mid February and had Justin as a consultant, to which he came over and measured my windows. I felt as if my time was wasted and not valued due...
Emily E.
4/2/2025
I highly recommend JC Lilly Windows. Justin is very knowledgeable and was great at explaining the different options of windows. The installation team was top notch. They were very skilled,...
Carrie G.
2/9/2024
What a pleasure to work with the team at JC Lilly. We had our door and side panels replaced and the product is amazing and the installation team are top notch pros!
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