This agent has 152 reviews.


Jamie Hahn - Hammer, a buyer from Koshkonong, WI
Liz goes above and beyond any realtor that you will ever work with. She will answer your calls, texts, emails anytime and any day. She makes you feel valued and important. She is ethical and will always be honest and do what is right.
2023
Lilin, a buyer from Janesville, WI
Liz was fantastic! She was always super easy to reach, and answered all my questions. As a first time homebuyer I was comforted by how much knowledge she had, and even in this crazy market she helped us find the perfect home for our family! She knew just the right amount to offer, and she really helped me and my family understand every choice we were making.
2022
Paula Straubel, a seller from Lake Mills, WI
Liz is one of the best real estate agents that I know. She is professional, efficient and knowledgeable. I was so impressed with her communication with us. We never had to ask questions because she communicated with us daily. We had several offers with a few days of listing the house. She gets the job done!!

Lauren, a seller from Jefferson, WI
We worked with Liz as a first time home buyer and a first time home seller with this property. Liz has always been friendly, personable, and most importantly incredibly knowledgable about the buying and selling process. She made us feel comfortable with the decisions we were making and always provided us with options. We never felt pushed or rushed to make a snap decision and she always put forth 110 percent effort day or night. At a time when the market, and subsequently her schedule, was unprecedentedly busy we were always treated as if we were her only priority and sole client. This theme along with her unwavering patience has continued as we are searching for our next purchase. Liz's diligence, awareness and comprehension of the ever changing market, wrapped up with her congenial demeanor makes her the real deal in this booming industry.
2021
Liz G, a buyer from Wauwatosa, WI
Liz made our buying a home in Wisconsin easy! We viewed many homes with her and my family. We trust her expertise and found the perfect home for us!
2021
Shelby Walling, a buyer from Jefferson, WI
Liz was so great to work with during our first time home buying experience. She was knowledgeable about the location and market we were looking in! We shopped during a crazy time in the market and Liz was always in touch and kept us informed on available properties and scheduled showings quickly. When walking through the homes she would point out things we may want to look further into and benefits of each home! We had a few different delays during our home buying experience due to no fault by Liz but she helped us navigate them and truly understand what was going on! She was amazing and we couldn't recommend her enough!

Christine Sirgenthaler Wenger,, a buyer from Oconomowoc, WI
Liz was always available. She gave me confidence when it was needed because this was a huge challenge for my husband and I. her communication skills were at the top of the list. She was also patient with us and not push us.

Charlotte Curley Fort Atkinson WI, a seller from Fort Atkinson, WI
Liz was fantastic, even though I've sold many homes before I used her expertise and guidance to help me sell my home as she saw fit.

Liz is the best.

All Century 21 team was helpful in answering any of my needs. We bought this home through Century 21 in 1999. Andy Heine was also helpful in the sale of my house and my needs to get it sold.

Jim Hammonds, a seller from Jefferson, WI
Liz was extremely professional and took time to research our needs/wants before we sold our home and listed with her & Century 21.

Jim and Taunya Hammonds, Hellenville , a buyer from Helenville, WI
Thank you Liz for everything that you've done for us in purchasing our new home. It is exactly what our family needed!

Jason,Fort Atkinson, a seller from Fort Atkinson, WI
Liz Kostroski was helpful we appreciate her timelyness, quick response time, and attention to detail through out the process. looking forward to working with her on our next adventure! thanks again,Jason

Randy Zingen Jefferson, WI, a seller from Jefferson, WI
I've known Liz for many years and knew she was an exceptional realtor in the area. She is also a kind, compassionate person who helped my entire family, not only with selling my family's home, but with this emotional transition. At every turn she was there to help. She also helped my wife sell her family's home, and went above and beyond what a normal realtor would do! She was phenomenal!!!
The sale of my wife's family home was messy and strained. It was an extremely difficult time and Liz was there to help her through all of it. It's impossible to sum up everything she did and what it meant to my wife. We are both forever grateful!

Suzanne Rendon, 711 Fairway Lane,, a buyer from Jefferson, WI
Very professional. There were many good comments on how she works with her clients.

I have worked with realtors before and Liz is one of the best. She communicated with me all the time and understood my needs.
She went out of her way to answer any questions and get me information I needed. She was knowledgeable. She made me feel comfortable and confident in finding the right home and I did. I would recommend her to anyone. She does a great job. She is really good at what she does

Liz was awesome in her attention to detail and my needs. It is a scary process when buying a home. She was professional and helped me find the perfect house. You could tell right away that she had your best interests in mind and was right there to help with any concerns.
She really goes out of her way. Her performance exceeded my expectations.

She made it easy. It was not confusing. I had everything I needed to make a purchase I was satisfied with

Tim Carter Beloit WI, a seller from Fort Atkinson, WI
Liz was helpful in a time of need with the sales of my deceased fathers home. She was kind and prompt and answered all my questions well.

steve thayer/ fort atkinson , a buyer from Fort Atkinson, WI
very polite and imformative'

Jesse & Allana Kalepp Milton, a buyer from Milton, WI
Liz Kostroski was always sure to go above and beyond for us. She was always willing to work way beyond normal business hours to make sure that our needs were satisfied as far as listings showings and all paperwork. She always made you feel as though you were her only client and that all of her attention was focused on you. I would definitely recommend Liz Kostroski to any friends or family!!

Robert Ganzow, Jefferson Wisconsin, a buyer from Jefferson, WI
Liz Kostroski is a great person with the drive to do the right thing.

She showed us properties and knew the details before we saw them.

Gary R., a buyer from Whitewater, WI
Liz is fantastic. She takes the time to listen and find exactly what your needs and wants are then does get beat to find them. I would work with Liz again in a heart beat. Shes like family now.

Nicole David & Bill Glascock, Jefferson , a buyer from Jefferson, WI
Liz was so helpful and patient with all our questions. She always made us feel like we were her top priority.

Kaitlyn, Fort Atkinson, a seller from Fort Atkinson, WI
Liz was helpful when I had questions about the selling process, and was patient with my busy schedule. She always responded to me in a timely manner, and did it with a smile on her face! She was knowledgeable about the market within the area, and assisted in small things I could do to increase the value of my home. Highly recommend for buying or selling, as she has now helped me with both!

Keith & Lisa Walther , a buyer from Jefferson, WI
My husband and I really enjoyed working with Liz. She was easy to talk to. Always available when we needed her. Answered our questions professionally. Always listened to us, and worked really hard to help us find the perfect home.

Liz is the best! A lovely person. Caring, thoughtful, and a wonderful agent.

This is the first house my husband and I have ever bought. Our experience with C21 was fantastic! Thank you!

Brandon, whitewater, a seller from Whitewater, WI
Liz did a great job.

Greg Lindner, Johnson Creek WI, a buyer from Watertown, WI
I decided to use Liz Kostroski as our broker, as she was the broker on the purchase of a previous home by my daughter. My daughter was impressed and happy with the whole process that Liz guided them through. They were first time home buyers and needed some helpful experience. Also, the local knowledge of the area we were looking to buy in, was an important consideration.

Angel & Eric Waterloo, WI , a buyer from Waterloo, WI
Liz Kostroski was awesome to work with! She was always available on short notice AND weekends to show us houses! She is knowledgeable on houses and what could be wrong with them and what is good aspects of the house. I would recommend Liz to anyone looking to purchase a house!

Bennett cooke fort atkinson, a buyer from Fort Atkinson, WI
Super helpful, answered questions for us that we never considered asking while home shopping, super friendly and kind, always had a smile on just full of life. It was fun and enjoyable working with he

Tim Halsema, Fort Atkinson, a buyer from Fort Atkinson, WI
She treated us like family and walked us through the whole process. As first time home buyers, we had alot of questions and she was accommodating

L. G., Fort Atkinson , a buyer from Fort Atkinson, WI
Liz Kostroski is a friendly, kind and caring. Shes the best! She really helped me and my wife. She has done a good job! Thank you so much for all you have done for me and my wife.

Bryan Ploszaj Edgerton Wi., a buyer from Edgerton, WI
Was comfortable with Liz after meeting with her to view a property .

Mary Sue Wheeler Lake Mills, WI, a seller from Lake Mills, WI
Although Liz was recommended by a family member, her reputation as an honest, hardworking, and knowledgable broker preceded that. Our situation was unique and Liz was aware of the specifics and her attention to detail was exemplary.


The unique situation we presented to Liz was dealt with efficiently and with a professional and knowledgeable attitude. She was extremely patient with me and answered my questions immediately and completely.


Can not say enough about these qualities listed - I wish it went above "excellent"


Liz's attention to my situation and circumstances of the sale was outstanding.

Kimberly Trittin, Watertown WI, a buyer from Watertown, WI
Liz Kostroski was helpful in my home purchasing process. She was knowledgeable about the different houses we looked at. I would recommend Liz Kostroski to anyone looking to buy a house. The whole process of purchasing a home, including signing contracts to closing, went smoothly. Even when we went on vacation after I received an accepted offer, she was still there for any questions that I had. Liz Kostroski was awesome to work with.

Mark Schopen, a seller from Jefferson, WI
Liz is great, and knowledgeable on property values. She gave good advice on things to improve sale ability of our property. She was good at guiding us through the process and keeping us on course for best results.

Rebecca Prager, Fort Atkinson, Wisconsin, a buyer from Fort Atkinson, WI
Liz took a stressful situation in my life and made it easy. She listened to me and helped me find something decent in my difficult price range. She was compassionate to my situation. Thank you so much!

Jamie and Heather Gadberry, a seller from Oconomowoc, WI
We have known Liz for many years and she possesses the skill and integrity that were vital to achieving our goals. She was kind but firm when negotiating and communicating with our buyers. Our questions were answered timely, our anxieties were calmed and our knowledge base was greatly expanded. We are so thankful for her dedication and we recommend Liz Kostroski to anyone needing to buy or sell. She excels in her field and works hard for her clients!

Scott Borchardt, Cambridge Wi, a seller from Cambridge, WI
Liz managed hiccups and inconsistencies with out us fealing the Pressure. Liz kept us up to date and on point as the process progressed. I would recommend Liz over anyone I have previously delt with.

Kurt Ritter, Oconomowoc WI, a buyer from Oconomowoc, WI
Selling and buying a home is a major expense and can be a stressful time. Finding the right realtor can help make this a positive experience. That is exactly how our experience went. Working with Liz Kostroski was such a great experience and we knew she was working in our best interest which made the selling of our home and buying a new one such a pleasant experience. She is honest and knowledgeable which I respect. When my wife and I had questions, she was always readily available by various modes of communication, which helped if I was working and had a question. My wife and I have a toddler and she was able to accommodate our schedule to work around nap times. She was able to provide helpful tips and recommendations to make sure we got the best deal possible. I was recommended to use Liz by a work colleague of mine and I would recommend anyone buying or selling a home to use her. My family is truly happy with the decision to use Liz and the home we purchased!

Justin and Jackie, Jefferson, a buyer from Jefferson, WI
Liz is an excellent realtor! She possesses every single positive quality you could hope for in an agent! She is kind, knowledgeable, an excellent listener, extremely helpful and patient. Never once did we ever feel pressured or feel like we were not being heard. She went out of her way to make our dream come true; our satisfaction was of the utmost priority to her. She is a beautiful soul, inside and out, and we feel incredibly honored to have worked with her. You are a gem, Liz!! Thank you so incredibly much for everything!!!

Nicole; Brodhead, WI, a seller from Evansville, WI
Liz helped us find and purchase a home so we were comfortable working with her. She took good care of us during both the buying and selling processes, is a skilled realtor and cares about her clients!

Gwen M, Helenville, Wi, a buyer from Helenville, WI
Liz was wonderful to deal with. Liz never made us feel rushed or pressured, and was caring about finding a good fit for seller and buyer. From start to finish all was smooth. Job well done!

Linda-joy Cass, N5060 North Helenville, a seller from Helenville, WI
Liz Kostroski makes you feel important as a best friend. She doesn't get offended if you don't understand something & ask too many questions.

Liz makes it her personal obligation to give you the best possible service she is capable of, & she is VERY capable.



Kelly Aguilar, Fort Atkinson, a buyer from Fort Atkinson, WI
She was great to work with! Very helpful and knew what to show us right away. The process of buying our new home went as smoothly as it could have! Liz did an awesome job helping coordinate everything and getting us to closing!

Kelly Aguilar, Fort Atkinson, a seller from Fort Atkinson, WI
Liz was amazing to work with, extremely patient with our many questions and incredibly helpful. She made us feel like we were her only clients when we certainly were not. All of our concerns were treated respectfully. Our house seemed to be priced just right with interest and offers coming within a week of listing. She was great to work with and if we ever bought/sold again would never hesitate to call Liz Kostroski again!

Victor Torres Jr, Johnson creek , a buyer from Fort Atkinson, WI
Hi liz really like how helpful you were with getting me and lydia a house. So much I referred you to a friend that I work with looking to buy a house.

Shannon Aube Jefferson, WI, a buyer from Jefferson, WI
Liz Kostroski is absolutely phenomenal!!!! She is such a great person with a generous heart. Her knowledge kept me up to speed with everything we had to discuss before finalizing the purchase. I absolutely love how she interacts with people. She is a truly genuine human being. Thanks for all the help Liz!!! I love my house and I cant wait to start my new happy life! Love you!!!!

Jon & Cyndi Porter 255 E. Green St., a buyer from Jefferson, WI
Liz did an amazing job looking out for our interests. From every step of the process. She took the time to get to know us and our needs, work hard with the seller to keep things going forward. Liz was always available to answer questions and to help us though highs and lows of the buying process

Because she took the time to get to know and understand our needs and what we were looking for she took the time to tell us the background and how to manage the project from start to finish.

We were so impressed with Liz that we referred her to our daughter, who needed to sell her Condo. Which Liz sold immediately.

Jo Arnett, a seller from Fort Atkinson, WI
Liz was wonderful to work with. She is hard working and always quick to respond to any questions. I would have no hesitation to recommend her to any of my family or friends.

Brian Lauretic, Edgerton , a buyer from Edgerton, WI
Liz knew what I was looking for and price range and area. Would return calls and address my concerns. I would recommend Liz to anybody. She's awesome

Jim Rohrer, Rochester , a buyer from Fort Atkinson, WI
Liz is everything a realtor should be. I highly recommend her.

Samantha & Mathew wisch, Jefferson , a buyer from Jefferson, WI
Liz was AMAZING!!!! WE ADORE HER! SHE WENT ABOVE AND BEYOND FOR US!!! :-)

Angie Suter. Fort Atkinson WI, a seller from Fort Atkinson, WI
I had used Liz on a previous property sale. She is awesome!
2018
Laura Montez, Jefferson, a buyer from Lake Mills, WI
We put in an offer to purchase through Liz because of her personality and we felt an immediate level of trust with her. I wouldn't hesitate to use Liz again for purchasing a home.

Liz did an exceptional job of helping us buy a house in this area!
2018
Penny, Jefferson Wi, a buyer from Jefferson, WI
Liz was incredible. She deserves a raise. She is so knowledgeable on every aspect of buying/selling a home. I will sell and purchase more homes in my days, and she will be THE ONLY person I choose to work with. Shes knows her job, she enjoys her job and that shows. Thank goodness Liz found me!
2018
David & Victoria, Fort Atkinson , a buyer from Fort Atkinson, WI
Liz Kostroski is knowledgeable and trustworthy. She always kept us in the loop on the details and answered our many questions. She helped us find the perfect home for our family and we are truly grateful. 10/10 will recommend Liz to friends and family.
2018
Laura Jacobson, Jefferson, a seller from Jefferson, WI
Liz was an amazing realtor for us. She provided us with great communication and assistance throughout this process. She prepared us for the selling of the house, showings, and when the time came the closing process. She truly is an amazing realtor and I would recommend her to anyone that is wanting to sell or buy a home.
2018
Jameson and Richmond Beckard , a buyer from Whitewater, WI
Liz treated me like family! I couldnt have had a better experience!
I always felt like she had my back and she did when times got tough!
Thank you Liz!
2018
Corianda B. Door County WI, a seller from Sturgeon Bay, WI
Liz was patient and she explained things in a simple uncondesceding way. She was always pleasant and upbeat. Sometimes time was of the essence and she was quick to help.
2018