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Headshot of Liz Kostroski

Liz Kostroski

Broker Associate, Agent
CRS, GRI, REALTOR, ABR
License Number: 50425-90

As a full time REALTOR® since 1997, my greatest satisfaction comes from helping my clients achieve their goals. Whether you’re a first-time home buyer, seeking to sell, upgrade or interested in investment property, I will be with you every step of the way.

I approach each client relationship as an opportunity to assist a new friend. My goal is to exceed your expectations, give you a peace of mind, keep you smiling, and make sure that you enjoy the journey.

I have extensive knowledge of the real estate market. I also have a tremendous amount of resources available to provide you with accurate answers regarding the real estate market.

I provide outstanding client counseling, education and service through the arduous task of buying or selling a home. My attention to detail and the emphasis I place on educating my clients throughout the transaction allows me to serve you better.

I look forward to speaking with you and discussing your home buying and selling needs.

Coverage

Cambridge, Fort Atkinson, Jefferson, Johnson Creek, Lake Mills, Milton, Sullivan and Watertown

Awards

2020 Masters Club Award, Quality Service Award, Presidents Award, Masters Diamond, Masters Emerald and Masters Ruby

More about Liz...

Luke
Where were you born?
Waukegan, Il
Liz Kostroski
Luke
What do you like to do when you’re not selling real estate?
Is that a thing? #RealEstate24/7
Liz Kostroski
Luke
Who is your hero?
My husband Terry.
Liz Kostroski
Luke
What would be your superhero power?
Flight
Liz Kostroski

Recommendations

Nov 4, 2025 at 7:41 PM

Karen McCullough recommends Liz Kostroski

Liz Kostroski is an excellent real estate agent. She has all the professional qualities,
all the knowledge, and all the organizational skills to present homes to interested buyers.
But what makes her someone you should know is that she is a truly exceptional person. She has great kindness and makes you feel relaxed and comfortable as soon as you meet her. I so enjoyed her personality that I wished I had more money so I could keep buying houses from her. I doubt that anyone has ever regretted getting to know her. She's great!!
Oct 24, 2025 at 10:15 AM

Shannon Ruegg recommends Liz Kostroski

I have come to Liz multiple times over the years to help me buy as well as sell a home. Working with Liz could not be easier. She always makes you her top priority and does everything she can to maximize profit and/or savings. I very much appreciate how low stress the process is with Liz. She is always the first realtor that I recommend to anyone in need of selling or buying a home!!
Oct 9, 2025 at 10:04 AM

Shellie Biegemann recommends Liz Kostroski

We had the pleasure of working with Liz Kostroski from NextHome in Jefferson County, WI to sell our rental property—and we couldn't be more thankful. Liz is not only a trusted friend, but also an amazing realtor who brings honesty, loyalty, and a true passion for her work.

Her professionalism and market knowledge made the entire process feel seamless. She communicated clearly, answered all our questions, and guided us through each step with confidence and care. Liz truly went above and beyond to make sure everything was handled perfectly.

If you're looking for someone who is both personable and highly skilled, Liz is the one to call. She made a potentially stressful experience feel easy, and we’re incredibly grateful for her dedication.

Scott and Shellie Biegemann
Jul 31, 2025 at 6:36 AM

Kaiyli Thompson recommends Liz Kostroski

I couldn’t have asked for a better relator. She was so kind and patient throughout the whole process. She made us feel comfortable and was so accommodating to our busy schedules. She was also a huge advocate for us and I can’t thank her enough!
Jul 30, 2025 at 12:55 PM

Braden Walling recommends Liz Kostroski

Liz was the best person we could have asked to help find a house. She was very motherly and made us feel very comfortable to communicate with. She answered the phone or called us within minutes of reaching out if there was a problem or anything to discuss and helped us learn about the home purchasing process!
Jul 21, 2025 at 6:50 PM

Christa Hnilicka recommends Liz Kostroski

Liz is always a pleasure to work with. She cares about her clients and treats them like family. She is very knowledgeable in her field and makes herself readily available for showings, to answer questions, or whatever else you may need. Liz is very trustworthy and invested in wanting to help her clients find the perfect fit. I would highly recommend Liz for any of your realty needs!
Apr 16, 2025 at 11:48 AM

Kate and Joe Johnson recommends Liz Kostroski

We found Liz on a whim after scheduling a viewing in Fort Atkinson and it seems the universe was on our side with the pairing. After our first meeting, we immediately knew we wanted her to help us on the journey of finding a home! She is incredibly knowledgeable and is able to convey said knowledge easily to help buyers come to their own conclusion about properties. Liz was always available if we had a question or if we were interested in looking at a property. She even went as far as to assist us during her time off/vacation! In the event that Liz wasn’t available, she would send a trusted peer in her place. We were lucky enough to get advice from both Liz, and her peer Alicia, at NextHome. Both woman were great and I would highly recommend them to anyone looking into purchasing property!
Mar 11, 2025 at 6:34 PM

Anonymous recommends Liz Kostroski

Liz is awesome at what she does..she got us in our forever home with the 1st house she showed us
Mar 11, 2025 at 6:27 PM

Robert Denruiter-green recommends Liz Kostroski

Liz showed us 1 house and we were done because she is so good at what she does .She took what we wanted and found it right away and now we own it
Feb 13, 2025 at 10:29 AM

Yvonne M Brown recommends Liz Kostroski

It took a long time but Liz helped me find my cute little dream house!
Feb 11, 2025 at 1:41 PM

Sharon Hensen recommends Liz Kostroski

When the time came that we had to find a new home, our son got us in touch with Liz. She was so amazing and now is someone we consider a friend for life. I would recommend her to anyone that is looking to sell or buy. She made me laugh and hugged me I got overwhelmed and cried and she understood the urgency of finding us a new home. We will be forever grateful for her and all her work and her friendship.
Feb 10, 2025 at 6:28 AM

Gary Hensen recommends Liz Kostroski

I was extremely impressed with her dedication to her job. After talking to her explaining our needs and wants in a house I was truly impressed on the time frame that she was able to find a selection of homes and showings we were able to see and that resulted in purchasing one. Liz made the process enjoyable and any questions I had were answered thoroughly so I could understand the process. She is a realtor that makes sure her clients understands fully the process of buying a house.
Dec 27, 2024 at 8:07 AM

B Riedlcarlson recommends Liz Kostroski

We’ve used Liz in the past. My sister has known her and her husband for several years. She is very personable, knows her craft. Very helpful answering questions. We would highly recommend her for buying or selling property.
Dec 5, 2024 at 2:55 PM

Tara Pinnow recommends Liz Kostroski

Liz was so beyond helpful, patient and very knowledgeable about everything. We had a lot of questions throughout the process and she always explained it perfectly and answered quickly. So grateful for her and our first home sale experience!!
Oct 16, 2024 at 4:07 AM

Sydney Smith recommends Liz Kostroski

Liz is amazing! Truly you can’t ask for anyone better to help you with buying/selling a house. She is with you every step of the way and is in your corner to get what you need/want. On top of it all, she is just so sweet! Just a great human. THANK YOU Liz from the bottom of my heart!
Oct 7, 2024 at 12:37 PM

Troy Smith recommends Liz Kostroski

We have worked with Liz for several years, Seven years ago she helped us purchase our first home, as first time home buyers we were very uncertain of the process, cost, and necessary events that go into this life change. Liz expertly guided us along the process, discussed state law, was available for showings, and always had us in mind. Around 30 days ago, we notified her we wanted to try to purchase our dream home and leave our existing one in the care of another buyer, she was immediate in her response. In only 2 x weeks we had accepted a offer to sell our home and also had been approved on our dream home! She is amazing and so caring with our lives. Truly a pleasure!
Aug 16, 2024 at 10:33 PM

Jonathan and Amber Saiia recommends Liz Kostroski

We have greatly appreciated Mrs. Kostroski's fine qualities that have heavily contributed to helping my wife and me to purchase our first home. Can one argue with the sincerity of a professional who sits on the carpet with us in an empty home and chats one on one with us? Answering our questions? Liz naturally listens, communicates patiently, and respects our persons, though ignorant and inexperienced with purchasing our manufactured home. We are thrilled to have her guidance after our offer was accepted by the seller. She has been worthy of our trust. Thank you, Liz! The Saiia's
Aug 10, 2024 at 8:33 AM

Hussam recommends Liz Kostroski

Liz is an amazing realtor I would definitely recommend her to everyone I know that looking to buy or sell a home. She is very friendly and very knowledgeable and she always give an honest advice. Also she showed me so many houses until I found the perfect home.
Aug 9, 2024 at 11:26 AM

Hussam recommends Liz Kostroski

Liz is an amazing realtor I would definitely recommend her to everyone I know that looking to buy or sell a home. She is very friendly and very knowledgeable and she always give an honest advice.
Also she showed me so many houses until I found the perfect home.
Jun 29, 2024 at 7:39 PM

Tammy DeLosh recommends Liz Kostroski

Liz and her team were wonderful to work with. She was very professional and informative. She walked us through the process of selling our house in today's market and explained the process and timeline very well. She kept in contact with us through the whole process and she was very quick to respond to our e-mails/calls/texts. We would strongly recommend her for any and all you real estate needs. Thanks again Liz and team for the awesome experience!
Apr 8, 2024 at 11:33 AM

Wes Johnson recommends Liz Kostroski

Liz was amazing!!!! She had our house sold in under a week for above asking price! What more can you ask for than that!!!

Feb 22, 2024 at 6:47 PM

Sarah Thompson recommends Liz Kostroski

Liz is just an amazing person all around and excels as a realtor. She makes buying a home effortless and is extremely knowledgeable in all things home related. She is kind and helpful and quick to respond. She's very good at listening to questions and concerns and makes sure you understand things. I appreciate how she never pressured me to make a decision and allowed me to set the pace. If I ever need to buy and/or sell again, Liz will be my go-to realtor. She truly is someone who you can trust and wants the best for you.
Oct 14, 2023 at 6:59 AM

Judy Anderson recommends Liz Kostroski

Working with Liz was wonderful She worked with us on selling and buying a house. She kept us informed of every step and was there every time we called or texted. Ready to show us a house or answer a question at a moment’s notice. This is the second time I have worked with Liz and she will always be my family’s realtor.
Aug 13, 2023 at 6:16 AM

Joe recommends Liz Kostroski

Liz is the best realtor ever! I would most definitely recommend her to anyone. She was always super nice and willing to help us find the perfect house. She also treated us like her own kids which was super nice!
Jul 28, 2023 at 6:02 PM

Katie B. recommends Liz Kostroski

Liz has helped me buy a home twice now. She remembered me the 2nd time around. Fought hard for me every step of the way. Told mey next steps at every turn. For someone who is clueless, she made buying a home on my own so much less stressful. Hands down adore her!
Jun 20, 2023 at 2:06 PM

Carolee Holtan recommends Liz Kostroski

Liz was simply awesome! She listened to our needs and wants, understood budget concerns and always available for questions.

Worked around our crazy schedule to show us only houses that would be good fit for us.

If you want someone that steps into your shoes when viewing a home with you, then Liz is the realtor to gently guide you into your new home.



May 29, 2023 at 4:03 PM

Anonymous recommends Liz Kostroski

We hired Liz to sell our not-so-typical property. She helped us navigate the market place and she handled the offers with professionalism. We were very pleased with the outcome!
May 2, 2023 at 8:29 AM

Jill Dahnert recommends Liz Kostroski

I highly recommend Liz...from beginning to end she made my mom feel comfortable and never overwhelmed...as an elderly woman selling your home...that was very important to us for our mom!! It really was a fast, easy process!! Thank You Liz
Apr 1, 2023 at 4:33 AM

Hank Neils recommends Liz Kostroski

Liz was very professional in your approach. She set our asking price in an accurate manner and knows the local market well. We were able to secure our asking price within 4 days of hitting the open market. We would highly recommend Liz.
Dec 26, 2022 at 7:22 AM

Justin Andersen recommends Liz Kostroski

Liz is amazing seeing that I’m a OTR truck driver she did all the work and all I had to do is sign papers highly recommend her if your buying or selling property
Dec 2, 2022 at 3:18 PM

Justin Andersen recommends Liz Kostroski

If I could give her more stars I would she goes above and beyond highly recommend anyone buying or selling a house to check her out you won’t regret it ??
Nov 11, 2022 at 11:53 AM

Glenn Rollins recommends Liz Kostroski

Searching for a new home from a state away is a challenge. Liz took into consideration how difficult that was and helped us negotiate that issue. As we had a health issue two days before the move, Liz helped immeasurably as we had to reschedule the closing and the move. She gets the challenges of moving and under such difficult conditions, stepped up to help us in more ways because of those moving challenges!
Nov 7, 2022 at 11:38 AM

Andrew Zastrow recommends Liz Kostroski

If I had to rate Liz 1-5 Id give her a 10! I ran into many problems in the homebuying process and she was there helping me every step of the way. Keeping in contact with me, the seller, my lender, and various possible contractors to assist me. I can't express how much of a help she was with my homebuyer journey.

I highly recommend her for anyone that is looking to buy!!
Sep 20, 2022 at 12:36 PM

Lynn Schopen recommends Liz Kostroski

Liz was very helpful and made selling my home a breeze. Thanks Liz!
Jul 25, 2022 at 5:16 AM

Jesse and Julie Castillo recommends Liz Kostroski

Liz went above and beyond for us and we are very grateful for the hard work Liz put in to help us find and buy the perfect home of our dreams. We lost out on our initial bid and were extremely disappointed, because we really loved the home and saw our family living here. When a second opportunity opened up Liz connected immediately and we truly don't think we would have be in our new home without her knowledge and guidance in helping us secure our dream home. We can't recommend her highly enough...Thank you Liz!!
Jun 27, 2022 at 8:52 AM

Tammy Brown recommends Liz Kostroski

Liz is the best. When I reached out about selling my mom's house. She without hesitation, said yes of course she would list it for me. even though it was in Hales Corners a few miles east of Jefferson. She made this process so easy, which was so appreciative with all the other items that needed to be dealt with. If you are looking for a realtor, hire LIz, she is simple the best!!
Jun 9, 2022 at 2:39 PM

Justin walking recommends Liz Kostroski

Liz was amazing! She went above and beyond to make it a smooth and stress free process! I would highly recommend Liz to anyone buying or selling.
Jun 9, 2022 at 1:43 PM

Brittany Walling recommends Liz Kostroski

Liz is the best and goes above and beyond for her clients. She helped us buy our first home six years ago. We knew when we were ready to chase our dreams of building that we would use her again. That time has come and she again was fantastic to work with the second time around. She took excellent photos of our home which lead to several showings and offers. She assisted us in finding the perfect piece of land to build our new home. She helped guide me through the steps to ensure that land would be great for a new build. If you have any questions Liz is right there to help you. If she doesn't know the answer, she will make sure to find it very quickly. We plan to refer her to our friends and family who are looking to buy or sell.
Apr 25, 2022 at 5:30 PM

Marijane Cooke recommends Liz Kostroski

An absolute joy to work with. Have worked with her twice now, and would not work with anyone else! She is extremely knowledgeable and patient as you walk through the exhausting process of buying a home. Highly recommend!
Mar 28, 2022 at 8:18 AM

Morgan Smith recommends Liz Kostroski

Liz has been working with my family for a few years now and we all love her. She helped my parents buy their dream home and helped me buy my first home. She made the daunting process of buying a house for the first time very easy and got us looking at listings extremely quick, which is very important in this market. I highly recommend her, she's a fantastic realtor and treats you like family from the beginning!
Mar 14, 2022 at 5:00 PM

Jim Straubel recommends Liz Kostroski

Liz is absolutely wonderful to work with. Her in-depth industry and market knowledge combined with her professionalism and attention to detail made the process of selling our home feel easy. I would highly recommend Liz to anyone looking to buy or sell.
Dec 13, 2021 at 6:13 AM

Eric Golemgeske recommends Liz Kostroski

Liz is easy to work with, very knowledgeable and is always available to help. I highly recommend working with her!
Dec 7, 2021 at 7:02 PM

Eric & Elizabeth Golemgeske recommends Liz Kostroski

Liz went above and beyond for us! She really cares about her clients. We’ve had a great experience every time we’ve worked with her.
Sep 3, 2021 at 7:55 AM

LISA WALTHER recommends Liz Kostroski

My husband and I have been working with Liz for two years. She helped us buy a house, then sell our house. She has always been very nice, helpful, and available when we need to talk, or ask questions. We loved working with Liz, and if we decide to buy a house again, we'll definitely get in touch with her again. Thank you, Liz!!
Jul 20, 2021 at 6:07 AM

Joseph M. recommends Liz Kostroski

Liz was an excellent realtor to work with. Her attitude and knowlege about housing in general made looking for a house almost painless!

Strongly recommend.
Jul 8, 2021 at 7:16 AM

TJ Bahr recommends Liz Kostroski

Smooth and easy process and Liz was a joy to work with as always. This is the second time we’ve sold a home with her help and it won’t be the last time we work with her!
Jun 24, 2021 at 7:51 PM

William J Haney recommends Liz Kostroski

Liz was on top of her game. Keeping us appraised on all new listing in our desired area. She drove the long distance multiple times to show us several different homes till we found the home we wanted. She was very knowledgeable with working with us in putting in the offer and every aspect of buying this house. Thank you so very much Liz.
Jun 16, 2021 at 2:07 PM

Keirsten Karll and Joe Fox recommends Liz Kostroski

Liz is the absolute best! We have a baby on the way and were in a frantic search for a house. Liz went above and beyond to help us find the place we now call ours! We couldn’t be happier with our experience! The best part is, we still reach out to Liz and she answers any questions we have and she has been rooting for us the whole way! It doesn’t get much better than Liz, I would highly recommend her!
Jun 16, 2021 at 1:32 PM

John and Melissa recommends Liz Kostroski

There are not enough good things to say about Liz or let alone working with Liz. We met her 5 years ago upon searching for the home we bought then and will never look back. This is an absolutely WILD housing market and Liz has handled it with grace and tenacity when the occasion calls for it. She has talked us off a ledge, but also nudged us to something we may not have considered because of the current market. The relationship we have established with Liz over the years knowing her is absolutely why we wouldn't consider or recommend anyone else as long as she is available. I would order my own box of cards to hand out on her behalf but that might be weird, so I'll swipe a pile from her. Not enough stars to give and never enough good things to say about Liz, she is incredible.
Jun 4, 2021 at 11:43 AM

Cyndi Porter recommends Liz Kostroski

This is the second time we worked with Liz once to buy and once to sell.. Our daughter also worked with her three times. You won’t find anyone better than Liz. She returns all your calls and is very professional. But mostly she is just a lovely kind lady. You won’t be disappointed if you give her a try.
Feb 18, 2021 at 7:34 AM

Stephanie Ashland recommends Liz Kostroski

Liz was absolutely phenomenal in every aspect throughout my home buying experience. What I appreciated the most was her honesty and drive to help me find my home. Also, every text or call was answered promptly. She gave great advice and guidance. I will recommend her until the end of time!
Jan 24, 2021 at 12:59 PM

Rachelle T recommends Liz Kostroski

Liz made my first time home buying experience easy and painless. She was very attentive to my needs and wants in a home, extremely easy to get ahold of, and willing to answer every question I had along the way. I would recommend Liz to anyone looking to buy or sell. She is amazing and extremely knowledgeable in everything she does!
Dec 21, 2020 at 11:50 AM

debbie neils recommends Liz Kostroski

My husband and I were very pleased with Liz Kostroski as our realtor. We purchased a parcel of land with future building plans. Liz made the process as painless as possible, holding our hands through every line of the contract. When the time comes for us to move into our new build, we will absolutely use Liz as our realtor to list our current home.
Nov 10, 2020 at 8:36 AM

Joshua Larson recommends Liz Kostroski

Liz is an outstanding Real Estate Agent!! She will go out of her way to make you feel appreciated and heard. She doesn't stop working until you find the exact house for you and she can also tell if it suits you or not. I highly recommend Liz Kostroski to be your realtor!
Oct 26, 2020 at 9:36 AM

Susan Worden recommends Liz Kostroski

Liz was awesome in in helping us find the right house for our needs.
Oct 12, 2020 at 7:45 AM

Heidi Rivera recommends Liz Kostroski

Liz was so helpful and accommodating. Thank you so much for assisting us in finding a perfect home for our family!!
Sep 27, 2020 at 6:17 AM

Juan recommends Liz Kostroski

This was our first home purchase and Liz helped us understand everything about our home. She was very knowledgeable and answered all of our questions in a timely manner. We are very happy with our new home purchase. Thank you Liz
Sep 21, 2020 at 4:07 PM

Shari Verhalen recommends Liz Kostroski

Liz was fantastic to work with. She is pleasant and very efficient!!!
Sep 18, 2020 at 11:16 AM

Shari Verhslen recommends Liz Kostroski

She did a wonderful job!! She handled all of the details and made it an easy process for us as the sellers. She is a delight.
Sep 1, 2020 at 6:13 AM

Jacob and Hannah Woods recommends Liz Kostroski

Liz was always there to answer our phone calls, texts and emails, and was quick to respond! We had an unexpected issue come up just days before closing, and Liz helped us deal with the issue! She helped us find exactly what we wanted in a house, and we are so grateful for that!
Aug 31, 2020 at 6:57 AM

Bethanie A Dodd recommends Liz Kostroski

Liz got the job done and helped us every step of the way! She was able to answer every question and get us the home we wanted! Liz puts every part of her heart into what she does!!
Aug 28, 2020 at 3:53 PM

Charlotte Curler recommends Liz Kostroski

In this difficult buyers market you need someone that will go all out for you. Liz is that person. She was always there for me when ever I called, it was seconds and she was calling, texting or emailing me back. Liz was so easy to work with, professional but warm and friendly. She has a lot of knowledge of the area and the market.
Aug 26, 2020 at 6:41 PM

Bethanie Dodd recommends Liz Kostroski

I cannot say enough amazing things about Liz!! Liz was there to help us find a home, answer every question and hug us in the end! Liz worked hard to make sure we got the house we loved! Liz puts every part of her heart into what she does❤️
Aug 18, 2020 at 12:52 PM

Grant Johnson recommends Liz Kostroski

Hands down the best agent you will ever get. I could wow you with lots of things she did for us, even helping our home sell and close in another state with her knowledge. Out lender told us 3 times she wished every realtor was like Liz. I can say beyond a doubt Liz will take care of you and sell or help you buy the best home.
Aug 18, 2020 at 7:31 AM

Virginia Johnson recommends Liz Kostroski

Liz was of tremendous assistance to my husband and myself as we moved from another state to Wisconsin. She took the time to listen to us, assisted us when we were having trouble during the selling of our house and interceded for us so we could move when we needed to.
Aug 13, 2020 at 9:31 AM

Shelby Walling recommends Liz Kostroski

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!
Jun 28, 2020 at 8:28 AM

Joe Brown recommends Liz Kostroski

There are not enough characters provided to explain how amazing and professional Liz is as a realtor! Whether buying or selling a home Liz is the one you need to call! She is always available and very easy to talk with about any part of the process! She got us our house at the very best price and with extras that I didn’t even know you could get! In what seemed such a stressful time, Liz was there with tips and reminders to really help lower the stress level during this whole process! She really is the best! Thank you so much Liz!!
Jun 14, 2020 at 8:57 PM

Kasi Samson recommends Liz Kostroski

Where do I start! From the beginning, Liz understood what kind of home I was looking for, how much I wanted to spend, location, different loans and how to get them, credit score improving tips, etc. She always opened her schedule to me so I would be able to see homes at my convenience. She was always a text or call away and always had paperwork and such ready for me in a timely manner. She was empathetic to my feelings of nervousness during the process and was always there to answer questions, give advice, and offer solutions. She even played with my daughter while we were looking at a home. I can’t say enough good things about my experience working with her! I am so thankful we crossed paths and I am currently writing this in my new home ❤️ Thank you to Liz for all of her hard work!

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