Should both the tenant and subtenant reject the offer of sale or fail to notify of acceptance of the offer within the time periods set forth in Sections 16.04.070 and 16.04.090 or vacate, the unit shall be made available for purchase to other tenants and subtenants in the building. The right to purchase another unit in the building by tenants and subtenants shall extend to the end of the one-hundred-twenty-day notice period provided the tenant in possession of that unit under Section 16.04.060. Whenever all tenants and subtenants in a building have indicated in writing their intention not to purchase a unit or the one-hundred-twenty-day notice period has expired and that unit is or becomes vacant, then the developer may offer for sale and sell the unit to the public. (Ord. 858 § 3.6, 1979).