New Heritage · Hampshire, Illinois
Mary Sagan SellsHomes
Top-producing residential & commercial expertise across northwest Illinois, from first keys to complex short sales and foreclosures.
Because every move matters.
Client rating
152 verified reviews
Top active listing
and everything below it
Pinnacle Producer
2022 – 2025
Communities served
across NW Illinois
The territory
Rooted in
northwest Illinois
From her home base in Hampshire, Mary represents buyers and sellers across the region. Gold pins are on the market now, red pins are recent closings. Hover or tap any pin for the details.
- Hampshire
- Huntley
- Kingston
- Kirkland
- Johnsburg
- Genoa
- Elgin
Portfolio in motion
Homes & commercial, live from the MLS
From build-ready lots to luxury estates across northwest Illinois, active listings and recent closings rotate through the board below.
Mary Sagan · Broker
About Mary
Going above and beyond
Mary has called Kane County home since 1985 and has been with CENTURY 21 New Heritage since 1994. Before real estate, she sold medical devices for DuPont, a job that taught her to listen first and negotiate second.
The through-line has always been people. She works hard, she moves fast, and she reads a room the way she reads a market. Most clients only hire her once, because after that they simply keep calling. She has a name for that list: her “Forever Clients.”
Whether you're buying, selling, leasing, or just wondering what your home is worth, she's ready to go to work for you.
Ten reasons you want a professional
- I know this market street by street
- I listen before I advise
- I negotiate like it's my own money
- I spot the problems before they cost you
- I market online, where the buyers actually are
- I work on your timeline, not mine
- I tap a network built over three decades
- I earn your trust, then I keep it
- I answer when you call
- I make buying and selling genuinely fun
Designations & honors
Credentials that
close deals
REALTOR®
Member of the National Association of REALTORS®, held to its strict Code of Ethics.
Commercial Specialist
Expertise in commercial acquisitions, leasing, and investment properties.
Short Sales & Foreclosure Resource
Certified to guide buyers and sellers through distressed-property transactions.
CENTURY 21 recognition
2025
Masters Ruby
Quality Service Pinnacle Producer
2024
CENTURION®
President's Producer
2023
Masters Ruby
Quality Service Pinnacle Producer
2022
Masters Diamond
Quality Service Pinnacle Producer
In their words
Clients who
keep coming back
★★★★★5.0 from 152 verified reviews
Mary Sagan's knowledge of Fox Valley real estate is “Best” in her field. She was helpful in every way, from CMA market analysis, to knowledge of towns, neighborhoods and homes meeting our needs and objectives. This included gaining immediate access and appointments within hours of properties being listed in the MLS, advising us on possible pitfalls in some properties, providing guidance for buying decision making, recommendations for structuring a stronger bid, and even suggestions for property improvements. We will gladly recommend Mary Sagan's expertise.
Larry & Liz
Just sold our home of 36 years. As always, Mary was by our side to help and made the transition so easy for us. We always appreciate all the help she gives us. Her knowledge of the area and real estate business is excellent.
Jeff and Marcy
Mary is not only 100 percent committed to her job but she also is a wonderful person!! She is very professional and was by my side for any questions that I had throughout the process of the sale of my house. I will recommend her to my friends and family and will use her again if I need her services. Thank you so much Mary.
Cristobal Flores
We have used Mary for the sale of many of our investment properties. This is the first time we listed any land. She has always been dead on with her pricing and advice on what improvements to be made, etc.
Jody Remakel
Mary is great to work with. She was on vacation and working all day and night with me to negotiate the price and deal. Excellent experience with Mary overall.
Jouliana Lazar
I could not imagine working with a different realtor. Mary, you are the epitome of professionalism and kindness that instantly projects trust and respect. Thank you for all you do.
Jon Trolla
On the feed
Follow the journey
Let's talk
Ready to make your
next move the right one?
Because every move matters.
Buying, selling, or navigating a short sale or foreclosure? Reach out and Mary will personally guide you through Hampshire, Illinois and beyond.
CENTURY 21 New Heritage · 120 W Oak Knoll Dr, Hampshire, IL 60140