Mike Ertmer - Broker Manager | REALTOR®

Getting his start in the travel industry back in 2004, Mike has been in sales from the beginning of his career. Having worked for both a travel marketing company and travel technology company, Mike has lived in Milwaukee, and Appleton, Wisconsin, Berkeley, California, finally settling in to Green Lake, Wisconsin in the fall of 2017, where he currently lives and works. Mike has a passion for connecting and helping people, whether that was in creating dream vacations, finding clients the perfect home, or partnering with sellers to pass the torch to the next generation.


One of Mike’s favorite things about sales and marketing is that every day is different. He gets to work with new clients, meet new people, and be a part of selling some of Green Lake’s most iconic homes and businesses. Loving real estate and loving Green Lake truly go hand in hand. Even though Mike wasn’t born in Green Lake, he has a deep love for the local community. He is on the Green Lake Chamber Board of Directors and active with many of the events throughout the Green Lake community.


In his personal life Mike is very active. He loves to workout, be on the boat, golf, and of course get back to his travel industry roots by visiting new places. When he’s not in Green Lake enjoying all this great community has to offer, he loves to visit friends in Florida, California, and is always open to a new adventure.


If you would like to take on your next adventure, let Mike Ertmer help you find your dream house, that you can turn into your home.

What my buyers and sellers are saying

"Mike hands down puts 100% into every person he works with in real estate. He was very responsive whenever I would reach out to him and did an amazing job negotiating and closing the deal. I would recommend Mike to anyone who is looking to sell or buy a home."  ~ Zach S.

"I have bought and sold many houses during my life and never had a realtor do as much as Mike has done for us. He does way more than you would ever expect and offers to do it all with a smile. He makes calls to professionals contractors, meets them at your house, makes sure everything is done right. He also makes calls to your bank, calls the person selling and answers lots of questions for us. He has just been the best ever! He has even gone so far as to introduce us to people who like to play tennis and pickle ball in the area."   ~ Harv S.

"Mike was a pleasure to work with. His attitude was always very positive. He is very enthusiastic and ready to do more than what we could ask of him. He was willing to show the property and offered many open house events while always working around our schedule. He had great mediation skills and offered great advice about property improvements and setting price. I would highly recommend him to others and if I have the opportunity, I will use him again."   ~ Nancy S.

"Mike responded to a Zillow inquiry late at night and called us immediately. He is an outstanding communicator, his follow-up is fantastic, and his knowledge and expertise of the area were extremely helpful. We have worked with several agents in looking for a lake property and Mike was simply the best by far. We truly felt that he was advocating solely for us throughout the entirety of the buying process and provide assistance well beyond the requirement of a traditional agent. We had a very difficult seller to deal with and Mike made it as easy as was possible in dealing with an unresponsive listing agency and seller. Don't buy a home unless you use Mike and Special Properties."   ~ Dan N.

"Mike was a pleasure working with. His expertise in the market area was extremely helpful and made closing the deal very easy. My Son and I both enjoyed that Mike shared in our excitement in buying this joint venture property. He was friendly and responsive and was helpful in getting us familiar to the town and events. Very Happy New Homeowners." ~ Mary V.

"We met Mike about a year ago at an open house and we've really enjoyed getting to know him. He kept us posted about new homes coming for sale as we continued our search for a permanent residence. Once we found it, he was on top of every detail. He communicated well by whatever means was best at the moment (email, phone or text messages). At the time we were also selling another place and he was helpful in cooridinating between the two. We appreciated his sense of humor, pleasant personality, persistence and attention to detail. He helped make our home buying experience very pleasurable and we would choose to work with him again without hesitation."   ~ Paul N.

"Mike Ertmer was fantastic throughout the entire process! Always attentive to answering questions when needed, and made everything smooth. Great agent to work with for sure!" ~ John S.

"This was not our first Real Estate purchase. And also not our first attempt at purchasing Lake Property. Mike was absolutely the best representative we have ever worked with. His energy and communication skills are hard to beat. He worked Very hard for us to be able to get what we were looking for and for an acceptable price.  We expect to be doing more Real Estate activity in Green Lake. Mike will be our go to guy for sure!"   ~ Karl A.

"Just the best, extremely knowledgeable of the area and really took the time to listen and work with all our needs. Very professional. Highly recommended."  ~ Martin D.