The building was sold by Donna Bachman of Milwaukee. She was represented by John Kuhn of Siegel-Gallagher. Adserts was represented by James Young of Cassidy Turley.
Adserts plans to renovate the building and will use about half of it for their office needs. The company will lease out the other half of the building.
Adserts is currently located at 1675 N. Barker Road in Brookfield.
The building has been vacant ever since the Ethan Allen store moved out about four years ago, Kuhn said.