The for sale sign is up at the Enwin Utilities building in downtown Windsor.
Enwin recently put the 43,000 square foot office building on the market.
It's located at 787 Ouellette Ave. at Elliott St. and features three floors, three parking lots and a full basement.
As heard on AM800 news in November, Enwin CEO Helga Reidel said the company was exploring putting the building up for sale.
She said Enwin was looking at options to move its current staff of less than 100 people from Ouellette Ave. to its Rhodes Dr. building.
The listing states bids will be accepted until February 1, 2019 based on details contained in a specific bid package available through Enwin's Purchasing Department.