62 Pa. C.S. § 326
No lease of real estate for use by an executive or independent agency and no sole source procurement of supplies, except for computer software updates under $50,000, for an executive or independent agency for which the department acts as the purchasing agency shall be valid or effective unless, upon review, it is approved by the Board of Commissioners of Public Grounds and Buildings. Where the board is reviewing a proposed sole source lease or procurement being submitted pursuant to section 515 (relating to sole source procurement), approval of the lease or procurement shall require the unanimous vote of the board. Where the board is reviewing a proposed non- sole source lease, the lease shall be approved when one member of the board votes to approve the lease. All votes shall take place at a public meeting.
62 Pa.C.S. § 326