No building or part thereof or other structures shall be erected, altered, added to or enlarged, nor shall any land, building, structure or premises be used, designated or intended to be used for any purpose or in any manner other than is included among the uses in this title listed as permitted in the zone in which such buildings, land or premises is located.

No building or part thereof or structure shall be erected, reconstructed or structurally altered to exceed in height the limit designated in this title for the zone in which such building is located except as provided in Section 18.60.110.

No building or part thereof or structure shall be erected nor shall any existing building be altered, enlarged or rebuilt or moved into any zone, nor shall any open space be encroached upon or reduced in any manner, except in conformity to the yard, building site area, and building location regulations designated in this title for the zone in which such building or open space is located.

In addition to the regulations specified in this title for each of the principal zones, the general regulations set forth in Chapters 18.60, 18.63 and 18.67 shall be applicable to each and every such zone. In the event of conflict between the particular regulations for each zone set forth in this title and the general regulations set forth in Chapters 18.60, 18.63 and 18.67, the more restrictive regulations shall be applicable.

The regulations set forth in this title for each of the combining zones shall modify the regulations for the principal zones with which they are combined. All uses and regulations of the principal zone shall apply in the combined zone, except insofar as they are modified or augmented by the uses and regulations set forth in the combining zone regulations.

Each and every zone shall be subject to the provisions of Chapters 18.60, 18.63 and 18.67, in addition to the requirements and regulations set forth elsewhere in this title for each of the zones. The purpose of Chapters 18.60, 18.63 and 18.67 is to establish standards and considerations in order to achieve the maximum compatibility of these listed uses with their immediate and general settings. The standards and considerations shall apply to principal and accessory uses as specified, and shall guide the planning commission in the issuance of conditional use permits.

Commercial marijuana land uses, including, but not limited to, medical marijuana dispensaries, are prohibited in all zoning districts within the city, including, without limitation, all planned development districts, and no conditional use permit shall be issued to any dispensary. Notwithstanding any provision in this code to the contrary, any person who violates this section shall not be subject to criminal liability under this code to the extent that such conduct is immune from criminal liability under the Compassionate Use Act (Health and Safety Code Section 11362.5) and the Medical Marijuana Program (Health and Safety Code Section 11362.7 et seq.), as the same exist or may hereafter be amended.