Leave a Message

By providing your contact information to Mike Ertmer, your personal information will be processed in accordance with Mike Ertmer's Privacy Policy. By checking the box(es) below, you consent to receive communications regarding your real estate inquiries and related marketing and promotional updates in the manner selected by you. For SMS text messages, message frequency varies. Message and data rates may apply. You may opt out of receiving further communications from Mike Ertmer at any time. To opt out of receiving SMS text messages, reply STOP to unsubscribe.

Thank you for your message. I will be in touch with you shortly.

A SPECIAL REAL ESTATE EXPERIENCE

Mike Ertmer

Browse My Properties

For Sale
For Lease
Sold

How Much is Your Home Worth?

  • Instant property valuation
  • Expert advice
  • Sell for more
Mike

Agent Details

Meet Mike

Mike Ertmer is a leading real estate professional in Green Lake, specializing in lakefront homes and vacant land, lake access properties, and luxury real estate on Big Green Lake and throughout the surrounding area. Known for his strategic marketing approach and deep understanding of the second-home market, Mike works with both buyers and sellers seeking exceptional properties in one of Wisconsin’s most sought-after lake communities.

With a background in sales, marketing, and technology dating back to 2004, Mike brings a modern, results-driven edge to real estate. His experience in both travel marketing and travel technology gives him a unique advantage—understanding exactly how to position homes to the right audience, especially buyers from key feeder markets like Chicago, Illinois, Minnesota, and across the Midwest searching for vacation homes and lakefront retreats.

Since settling in Green Lake in 2014, Mike has become deeply connected to the community and its lifestyle. He serves on the Green Lake Chamber Board of Directors, Green Lake Association committee, and is actively involved in local events, giving him a strong pulse on both the market and the people who make this area special.

Mike’s approach to real estate is simple: maximize exposure, attract qualified buyers, and deliver results. From high-end waterfront estates to lake access properties and off-water homes, he tailors every marketing strategy to highlight what makes each property unique—whether that’s sandy shoreline, sunset views, or proximity to downtown Green Lake.

For buyers, Mike provides a competitive edge in a fast-moving market, helping clients secure everything from luxury lakefront homes to weekend getaways with confidence and clarity.

When he’s not working with clients, you’ll find Mike enjoying the very lifestyle he sells—boating on Big Green Lake, golfing, staying active, and traveling whenever he can.

If you’re considering buying or selling real estate in Green Lake, WI, Mike Ertmer offers the expertise, marketing, and local knowledge to help you make the right move.

Follow Me!