71 Pa. Stat. § 651.1
The following words and phrases when used in this article shall have, unless the context clearly indicates otherwise, the meanings given to them in this section:
"Agency." Any department, departmental administrative board or commission, independent board or commission, agency or other authority of this Commonwealth now existing or hereafter created, but shall not include any court, political subdivision, municipal or local authority.
"Department." The department of general services.
"Surplus property." Any buildings, land or other real estate owned by the Commonwealth that has been deemed surplus to the needs of the administering agency which has current use of the property. The definition of and the designation of surplus property shall not apply to any lands designated as State parks or State forests or any lands acquired by the Pennsylvania Fish and Boat Commission or the Pennsylvania Game Commission.
71 P.S. § 651.1