The city is divided into zoning districts which are designated as follows:

In addition to the districts established in MMC § 10.05.0300, there is established a combining district in which office uses may be combined with any of the districts set forth in MMC § 10.05.0300, said district to be designated by the suffix "-O."

Where the exact boundaries of a district cannot be readily or exactly ascertained by reference to the zoning map of the city, the boundary shall be deemed to be along the nearest legally recorded property line. If a district boundary line divides or splits a lot, the lot shall be deemed to be included within the district which is the more restrictive.

Changes in the boundaries of districts shall be made by ordinance in the manner provided in Article XXVI of this chapter, said ordinance describing the area to be changed either by lot and block number, or by metes and bounds. After adoption of any ordinance changing any boundaries of any district, the city clerk shall mark the aforementioned map to show the number and date of the adoption of this chapter, and annually thereafter, the city clerk shall cause a revised zoning map to be published in a newspaper of general circulation in the city, said map to show the changes made in district boundaries effected by amending ordinances as provided in this chapter for the year preceding said publication; provided, however, that no publication shall be required if there have been no such changes during the preceding year. However, district boundary lines shall be deemed to automatically change with changes to lot boundaries as a result of city-approved lot line adjustments.