Lakefront Suburban Chicago Mansion Sells for $7 Million

A lakefront mansion in Glencoe sold for $7.1 million last month.

Tim Doelman, the longtime CEO and co-founder of ultra-filtered milk brand Fairlife, purchased the newly built home in late March, around the time he exited the company he helped shape over 15 years, Crain’s reported. The price works out to $710 per square foot.

Doelman and his wife, Joy, closed on the lakefront property at 585 Longwood Avenue on March 21, according to Cook County records. The seven-bedroom, 10,000-square-foot home sits atop a bluff overlooking Lake Michigan, with 137 feet of private beachfront accessed by a mini-tram or stairs. The estate includes a pool, an indoor sports court, an in-home theater, a wine room and an elevator. Milena Birov of @properties Christie’s International Real Estate had the listing.

The home was built by Heritage Luxury Builders, which bought the site in 2021. The home originally listed for $9.48 million and sold at roughly 73 percent of that price.

The purchase ranks as the sixth-priciest home sale in the Chicago area this year and the most-expensive suburban Chicago home sold this year. The last Glencoe home to sell for more was a neighboring property, at 595 Longwood, which fetched $7.25 million but sold for a loss in August 2024.

Doelman launched the high-protein drink Athletes HoneyMilk in 2010. That brand evolved into Core Power after securing a national distribution deal with Coca-Cola. A joint venture with a dairy company and Coca-Cola followed, eventually leading to the creation of Fairlife. Coca-Cola, which initially owned 42.5 percent of the venture, acquired full ownership in 2020.

Fairlife, headquartered in Chicago’s West Loop, surpassed $1 billion in sales last year. The company is expanding production, including a new facility underway in New York.

—Rachel Stone