(a) The executive officer shall prepare and execute a certificate of completion and shall make the filing required by this division upon all of the following:
(1) The completion of all commission actions pursuant to Part 3 (commencing with Section 56650), including the time period allowed to file and act upon requests for reconsideration pursuant to Section 56895.
(2) The satisfaction of any conditions contained in the commission resolution making determinations that are required to be completed prior to filing a certificate of completion.
(3) The completion of all proceedings pursuant to Part 4 (commencing with Section 57000).
(b) Whenever the commission approves the inclusion of any territory of a landscape and lighting assessment district within a city, the executive officer shall notify the clerk of the landscape and lighting assessment district or other person designated by the district to receive notification.