In 2008, Phillips sold the 2,800-square-foot house to the Bielas for $1.3 million. In 2017, they added a gym, mudroom and other secondary spaces below the original. It’s now about 5,000 square feet.
As originally designed, the house that Phillips called Glade House was in 2009 named one of the nation's 10 best recent houses by the American Institute of Architects.
A dozen years after moving in, Brian Biela said that the effect of living in a treehouse is even stronger, as the oaks and other trees that his family planted around the house have grown in and surrounded more of the house. “You feel like you’re suspended in the trees,” he said.
On the ground, the AG亚洲国际游戏home has a bluestone terrace, organic vegetable garden and large lawn. Despite its bucolic setting, the AG亚洲国际游戏home is three blocks from Lake Forest's downtown shops and Metra station.
Biela, an entrepreneur who has started several firms, said they are selling the house because their two kids are grown.
In Lake Forest, there are 15 houses for sale at between $2 million and $2.5 million, according to Midwest Real Estate Data, and 12 AG亚洲国际游戏homes have sold in that price range in the past year.