Woodland Hills-based Voit bought the entire project from Friendly Hills Medical Group earlier this year. Friendly Hills' parent, KPC Medical Management Inc., filed for bankruptcy last December.

In addition to the office building, the development includes a 140,000-sf hospital and two medical office buildings of about 20,000 sf each. All of those buildings are vacant.

A Voit official says the 50,000-sf office building will be marketed while the company considers its options for other parts of the site. The marketing efforts will be handled by Jeff Chiate and Peter Sowa of Cushman & Wakefield's Irvine office, the same pair of brokers who represented Voit in its purchase of the entire property.