Enterprise budget units are financed and operated in a manner similar to private business, that is, expenditures are wholly or partially offset by revenues collected from consumers in the form of user fees and/or charges for services.  Special Districts are units of local government generally organized to perform one or more special functions such as street lighting, waterworks, parks, and/or fire protection.  The Board of Supervisors retains appropriation and fee rate authority over these departments and agencies.

Community Development Commission
(707) 565-7500

This county agency is responsible for the administration and operation of housing and community development programs, including the Housing Authority which administers various rental assistance programs to very low income households, the Community Development Division which administers block grants and provides services to the homeless, and the Redevelopment Agency which manages improvements in the Roseland, Sonoma Valley, and Russian River project areas.

Emergency Services
Fire Services
(707) 565-1152

The Fire Services division coordinates fire service activities in the unincorporated areas of Sonoma County (County Service Area No. 40), administers the volunteer fire program, provides administrative support for other county fire zones, provides personnel to respond to emergencies and hazardous materials clean-up, administers contracts for fire response to fire agencies, non-profit corporations, and the Department of Forestry, and enforces fire prevention county-wide.

Agricultural Preservation and Open Space District
(707) 565-7360

In November 1990, Sonoma County voters created the Sonoma County Agricultural Preservation and Open Space District as a result of the public’s concern over the urbanization and the displacement of agricultural land and open space in Sonoma County. The District acquires conservation easements through voluntary transactions with landowners. The District also purchases land outright from willing sellers, typically for parks, recreation, or other open space purposes. Properties are protected according to the Acquisition Plan 2000, which categorizes acquisitions into four groups: Agriculture, Greenbelts, Natural Resources, and Recreation.

Sonoma County Fairgrounds
(707) 545-4200

The Sonoma County Fair & Exposition, Inc. operates facilities during the county fair and also provides year round administration of the fairgrounds.

Sonoma County Library
(707) 545-0831

The Sonoma County Library is a joint powers agency established between the county and cities to provide library services throughout the county.  There are currently ten regional libraries, two rural library stations, and the Santa Rosa-Central Library.  Almost three million items are checked out annually.

Transportation & Public Works
Various Divisions
(707) 565-2231

In addition to Roads and Special Projects, this Department provides road construction and maintenance services and directly provides or administers contracts for the provision of various public utility services.  The Refuse Division conducts integrated waste management for the disposal and recycling of solid waste.  The Transit Division operates and maintains public transit and paratransit, and the Airport Division operates and maintains the Sonoma County Airport.  The Air Pollution Control District provides services that prevent air pollution from “stationary sources.”  The Water System Division provides water services for five County Services Areas under the control of the Board of Supervisors.  The Lighting Districts Division maintains lighting services for 19 districts.

Sonoma County Water Agency
(707) 526-5370

The Sonoma County Water Agency is responsible for domestic water supply delivery to most cities within the county; design, construction and maintenance of flood control facilities; operating and maintaining Spring Lake Park; and providing sanitation services.