Jul 07, 2005. /Lesprom Network/. The Boise Cascade Company may sell its headquarters in downtown Boise. The five-story building is 33 years old and valued at about $20 million. The wood-products company says the building is half-empty so it's considering selling it. A spokesman says the sale talk isn't a precursor to the company leaving Boise. Boise Cascade would lease space back from the new owner.