Query 1 | Petaluma Zoning Guide

Based on Chapter 4 of the Petaluma Implementing Zoning Ordinance (starting on page 11), the zoning districts and their purposes are as follows:

OSP (Open Space and Park) Zone: Applied to undeveloped areas appropriate for natural resource preservation, outdoor recreation, and public health/safety open space. It also includes existing City public parks and related community structures.
AG (Agriculture) Zone: Applied to areas actively used for grazing or the production of food and fiber for sale. It includes areas subject to seasonal or historic flooding.
RR (Rural Residential) Zone: Applied to single-dwelling areas with a minimum lot size of two acres, primarily at the western perimeter. It is intended to maintain a rural character and transition to unincorporated lands.
R1 (Residential 1) Zone: Applied to single-dwelling developments, primarily in the western hillsides, with densities ranging from 0.6 to 2.5 units per acre.

R2 (Residential 2) Zone: Intended for detached single dwellings on individual lots, with densities ranging from 2.6 to 8.0 units per acre.
R3 (Residential 3) Zone: Applied to older neighborhoods surrounding downtown, characterized by a variety of housing types and densities in a walkable context. Densities range from 6.1 to 12.0 units per acre.
R4 (Residential 4) Zone: Intended for a variety of housing types ranging from single dwellings to multi-unit structures. Densities range from 8.1 to 18.0 units per acre.
R5 (Residential 5) Zone: Applied to areas intended for the most urban housing types at densities ranging from 18.1 to 30.0 units per acre.
MH (Mobile Home) Zone: Applied to existing mobile home parks throughout the City.

C1 (Commercial 1) Zone: Applied to smaller-scale shopping centers or clusters of street-front stores that serve the surrounding neighborhood.
C2 (Commercial 2) Zone: Applied to existing community and regional shopping center sites.
MU1A, MU1B, MU1C (Mixed Use 1) Zones: Applied to areas intended for pedestrian-oriented, mixed-use development with ground-floor retail or office uses.
MU2 (Mixed Use 2) Zone: Applied to the downtown and adjacent areas intended to evolve into the same physical form and character as the historic downtown.

BP (Business Park) Zone: Intended for business and professional offices, technology park clusters, research and development, and light industrial operations.
I (Industrial) Zone: Applied to areas appropriate for a full range of manufacturing, industrial processing, general service, warehousing, and distribution operations.
CF (Civic Facility) District: Applied to sites for public utility facilities, government offices, community service uses, and schools.
FW (Floodway) Zone: Applied to sites within "Areas of Special Flood Hazard." (Regulated under Chapter 6, page 70).
PUD (Planned Unit District): Designed to allow for a mixture of uses, unusual density, or unique design characteristics that would not normally be permitted in a single-use district.
PCD (Planned Community District): Originally designed to allow unique, non-residential developments with a mixture of uses. New PCDs are no longer permitted, but existing ones are supported.

Flood Plain Overlay Zone (-FP): Regulates development in flood-prone areas to minimize property damage and protect public health.
Historic District Overlay Zone (-H): Protects and enhances buildings and districts of special historic, architectural, or aesthetic interest.
Theater District Overlay Zone (-T): Promotes the development of movie theaters within designated boundaries.
Senior Mobile Home Park Overlay District (MH-S): Ensures that existing and future senior mobile home parks remain available to seniors.
Downtown Housing and Economic Opportunity Overlay Zone (-DHEO): Facilitates residential and orderly economic development while preserving historic buildings and expanding pedestrian activity downtown.
Fairgrounds Overlay Zone: Allows for the operation of existing uses and the establishment of new beneficial uses on the City-owned Fairgrounds property.

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