Section 12Local Government Code of 1991 (Republic Act No. 7160), Sec. 12

Government Centers. - Provinces, cities, and municipalities shall endeavor to establish a government center where offices, agencies, or branches of the national government, local government units, or government-owned or controlled corporations may, as far as practicable, be located. In designating such a center, the local government unit concerned shall take into account the existing facilities of national and local agencies and offices which may serve as the government center as contemplated under this Section. The national government, local government unit or government-owned or controlled corporation concerned shall bear the expenses for the construction of its buildings and facilities in the government center.