(d) Modification of rental agreement. Notwithstanding any other provision of this subpart, the landlord may with the prior approval of HUD modify the terms and conditions of the rental agreement , effective at the end of the initial term or a successive term, by serving an appropriate notice on the tenant, together with the tender of a revised rental agreement or an addendum revising the existing rental agreement: Any increase in rent shall in all cases be governed by 24 CFR parts 245 , 246 and other applicable HUD regulations. This notice and tender shall be served on the tenant in the same manner as provided for in § 247.4(b) and must be received by the tenant at least 30 days prior to the last date on which the tenant has the right to terminate the tenancy without being bound by the codified terms and conditions. The tenant may accept the modified terms and conditions by executing the tendered revised rental agreement or addendum, or may reject the modified terms and conditions by giving the landlord written notice in accordance with the rental agreement that he intends to terminate the tenancy.