The lease for each tenant of a project for the elderly or persons with disabilities who is admitted on or after the date on which this subpart C is implemented shall contain the lease provisions described in Sec. 5.321 and, if applicable, Sec. 5.360. The lease for each tenant who occupies a unit in such a project under lease on the date of implementation of this part shall be amended to include the provisions described in Sec. 5.321 and, if applicable, Sec. 5.360:
(a) For Housing programs:
(1) Upon renewal of the lease and in accordance with any applicable regulation; and
(2) When a Housing program tenant registers a common household pet under Sec. 5.350
(b) For Public Housing programs:
(1) Upon annual reexamination of tenant income in accordance with any applicable regulation; and
(2) When a Public Housing program tenant wishes to own or keep a common household pet in his or her unit.