Except where there existed on September 15, 1945, contracts for financial assistance between a housing authority and the Federal Government, no low-rent housing or slum-clearance project shall be developed, constructed, or owned by an authority after September 15, 1945, except after consultation with the school district in which the project is located, and until the governing body of the county or city in which it is proposed to develop, construct, or own the project, proves it by resolution.