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Housing Types

Sonoma County recognizes that we need a variety of development types to meet our community’s housing needs. Below are links to permitting resources for different types of housing development.

Agricultural Housing

Housing types allowed on agricultural land, serving the agricultural uses of the land.

Accessory Units

Information about Accessory Dwelling Units (ADUs) and Junior Accessory Dwelling Units (JADUs)--smaller living units allowed on parcels with a single-family home.

Cottage Housing Developments

Small units similar in scale, bulk, and mass to a single-family home.

Mixed-Use Development

Allows a mix of residential and commercial uses in commercial areas where urban services, such as sewer and water, are readily available.

Multifamily Housing Development

Application procedures, application requirements, and development standards for multifamily development and other housing development that requires design review.. 

Mobile Home Parks

Temporary or permanent area for mobile homes.

Single-Room Occupancy Facilities

Facilities that are intended to provide housing opportunities in selected commercial zones for lower-income one- or two-person households that cannot typically afford apartments.

Tiny Houses

A summary of local and State regulations on all types of small homes. 

Workforce Housing Combining Zone

A combining zone to allow housing on commercial- and industrial-zoned land.

Contact Information

Permit Sonoma
2550 Ventura Avenue
Hearing Room
Santa Rosa, CA 95403
38.465074, -122.723705

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General Plan Housing Element


Accessory Dwelling Unit Regulations

Accessory Dwelling Unit Calculator
The ADU Calculator is a resource to help estimate the costs, returns, and benefits associated with building an ADU

Napa Sonoma ADU Center
The Napa Sonoma ADU Center is a fiscally-sponsored project of Napa Valley Community Foundation with support from Community Foundation Sonoma County and others. They provide resources for homeowners in Napa and Sonoma counties who want to build an ADU.

Community Development Commission

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The Community Development Commission (CDC) is dedicated to promoting decent and affordable housing, revitalizing communities, and supporting public services.