Open Space (O-S) Zone. The purpose of this zone is to provide for the conservation of renewable and nonrenewable natural resources of open land area. This allows future land use options that are reasonable and compatible uses on open lands in the city.

Agricultural Exclusive (A-E) Zone. The purpose of this zone is to preserve and protect commercial agricultural lands as a limited and irreplaceable resource, to preserve and maintain agriculture as a major industry in the city and to protect these areas from the encroachment of nonrelated uses which, by their nature, would have detrimental effects upon the agriculture industry.

Rural Agricultural (R-A) Zone. The purpose of this zone is to provide for and maintain a rural setting where a wide range of agricultural uses are permitted while surrounding residential land uses are protected.

Rural Exclusive (R-E) Zone. The purpose of this zone is to provide for and maintain rural residential areas in conjunction with horticultural activities, and to provide for a limited range of service and institutional uses which are compatible with and complementary to rural residential communities.

Single-Family Residential Low (R-L) Zone. The purpose of this zone is to provide for and maintain areas which are appropriate for single-family dwellings on individual lots at a lower density.

Single-Family Residential (R-1) Zone. The purpose of this zone is to provide for and maintain areas which are appropriate for single-family dwellings on individual lots.

Medium Density Residential (R-2) Zone. The purpose of this zone is to provide for and maintain residential areas allowing single-family, two single-family dwelling units or a two-family dwelling unit, or multifamily developments on lots which meet the minimum area requirements of this zone.

Multifamily Residential (R-3) Zone. The purpose of this zone is to provide for and maintain a mix of attached multifamily residential housing types.

Commercial Office (C-O) Zone. The purpose of this zone is to provide suitable locations for offices and services of a professional, clerical or administrative nature.

Neighborhood Commercial (C-1) Zone. The purpose of this zone is to provide areas for retail convenience shopping and personal services to meet the daily needs of neighborhood residents.

General Commercial (C-2) Zone. The purpose of this zone is to provide areas for shopping and personal services that is not limited to meet the daily needs of the immediate neighborhood.

Commercial Planned Development (C-P-D) Zone. The purpose of this zone is to encourage the development of coordinated, innovative and efficient commercial sites and to provide areas for a wide range of commercial retail and business uses, including stores, shops and offices supplying commodities or performing services for the surrounding community.

Old Town Commercial (C-OT) Zone. The purpose of this zone is to provide development standards and uses within the downtown specific plan area, approved in Specific Plan 95-1, in order to ensure compatibility and coordination of uses within the downtown planning area.

Industrial Park (M-1) Zone. The purpose of this zone is to provide suitable areas for the exclusive development of light industrial, service, technical research and related business office uses in an industrial park context, in conjunction with stringent standards of building design, noise, landscaping and performance.

Limited Industrial (M-2) Zone. The purpose of this zone is to provide suitable areas for the development of a broad range of industrial and quasi-industrial activities of a light manufacturing, processing or fabrication nature, while providing appropriate safeguards for adjoining industrial sites, nearby nonindustrial properties and the surrounding community.

Industrial Flex (I-F) Zone. The purpose of this zone is to provide a broader mix of light industrial and specialty or destination commercial uses, as well as provide services for employees and businesses located within the vicinity. Examples of uses include makerspaces, small business incubators or start-up spaces, business offices and service-based commercial uses such as restaurants, brew pubs, coffee houses, and similar uses that activate the area in the evening and weekends.

The purpose of overlay zones is to superimpose particular zones on existing base zones, thus establishing additional regulations and either reducing or extending permitted uses.

Specific Plan—Downtown (SP-D) Overlay Zone. The purpose of this overlay zone is to provide for special design standards and to control uses within the downtown core area.

Mixed Use Low (MUL) Zone. The purpose of this zone is to provide for neighborhood-serving goods and commercial services and/or multifamily residential in a mixed-use format (vertical or horizontal). Buildings in this designation will be designed to be walkable with wide sidewalks, active street frontages, and minimal setbacks from the back of the sidewalk.

Mixed Use Medium (MUM) Zone. The purpose of this zone is to provide for a mix of commercial, office, and housing development in buildings to achieve project feasibility. Buildings will contain active ground floor uses located at or near the sidewalk with housing or office next to or above.

Mixed Use District (MUD) Zone. The purpose of this zone is to allow larger sized properties to be developed with a mix of uses that may include buildings developed for a single use (such as retail, office, restaurant, and housing) and/or structures that integrate multiple uses vertically (such as housing above ground level retail). Typically, such projects establish a compact, walkable, "village-like" environment where buildings are grouped along external and internal street frontages and pedestrian-oriented pathways, plazas, and open spaces, with parking located in structures or subterranean. A model for the redevelopment of underutilized commercial centers.