Section 562B.9 - Notice1. Notices required under this chapter, except those notices identified in section 562B.27A, shall be served as follows:a. A landlord shall serve notice on a tenant by one or more of the following methods: (1) Hand delivery to the tenant.(2) Delivery evidenced by an acknowledgment of delivery that is signed and dated by a resident of the dwelling unit who is at least eighteen years of age. Delivery under this subparagraph shall be deemed to provide notice to all tenants of the dwelling unit.(3) Personal service pursuant to rule of civil procedure 1.305, Iowa court rules, for the personal service of original notice.(4) Mailing by both regular mail and certified mail, as defined in section 618.15, to the address of the dwelling unit or to an address provided by the tenant for mailing.(5) Posting on the primary entrance door of the dwelling unit. A notice posted according to this subparagraph shall be posted within the applicable time period for serving notice and shall include the date the notice was posted.(6) A method of providing notice that results in the notice actually being received by the tenant.b. A tenant shall serve notice on a landlord by one or more of the following methods:(1) Hand delivery to the landlord or the landlord's agent designated under section 562B.14.(2) Delivery evidenced by an acknowledgment of delivery that is signed and dated by the landlord or the landlord's agent designated under section 562B.14.(3) Personal service pursuant to rule of civil procedure 1.305, Iowa court rules, for the personal service of original notice.(4) Delivery to an employee or agent of the landlord at the landlord's business office.(5) Mailing by both regular mail and certified mail, as defined in section 618.15, to the address of the landlord's business office or to an address designated by the landlord for mailing.(6) A method of providing notice that results in the notice actually being received by the landlord.2. Notice served by mail under this section is deemed completed four days after the notice is deposited in the mail and postmarked for delivery, whether or not the recipient signs a receipt for the notice.