Any rental agreement or renewal of a rental agreement for a residential rental unit in the city of Bellingham entered into after the effective date of this chapter shall include or shall be deemed to include a provision requiring a minimum of 120 days’ prior written notice whenever the periodic or monthly housing costs to be charged a tenant are to increase. [Ord. 2023-03-007 § 1; Ord. 2018-02-004 § 2].