Geographical Information Systems (GIS)

Permit Sonoma GIS manages the development, maintenance, and distribution of comprehensive planning, land development and natural resource spatial datasets and related databases for Permit Sonoma. In addition to providing geographic data and related analysis supporting the Department's mission, Permit Sonoma GIS makes data available to the public through GIS Online Services.

Parcel Report

Find out important information about your parcel like:

• Jurisdiction (unincorporated Sonoma County or incorporated city)
• Zoning and Land Use
• Groundwater Availability
• Supervisorial District
• Williamson Act Land Contract
• And more

ActiveMap Viewer Collection

A collection of online mapping viewers to assist in easily accessing location-based information pertaining to a specific subject and/or area within the unincorporated areas of Sonoma County.

Map Gallery

The map gallery provides access to view and/or download free Ready-To-Print GIS hard copy maps. The GIS maps provide location-based information pertaining to a specific subject matter and area as well as countywide indexes.

Mapping Products

Permit Sonoma GIS offers many types of hard copy maps for sale. The mapping product listing describes available maps and reproduction costs.

GIS Data Download

Permit Sonoma GIS provides the ability to download geographical datasets. GIS information should be used for planning and design purposes only. The geographical information should not be used for emergency services, engineering purposes, relied upon for survey control, or used as a legal document.

Additional GIS Resources

As a quick reference guide, the resource links assist in finding additional geographically-related information and services. 

Contact Us

Questions, inquiries, and/or comments? Please submit a comment or inquiry.

Permit Sonoma GIS does not provide walk-in customer office hours. All mapping product requests and/or inquiries will be serviced through GIS Online Services.

Our Mission

Permit Sonoma GIS staff is dedicated to:

• Develop, maintain and provide high quality and reliable geographical information and services to Sonoma County departments and the general public
• Make geographical information accessible whenever possible in an effort to improve county operations, and provide timely and responsive customer service
• Provide the appropriate tools to retrieve and analyze geographical data for answering practical, policy, and political questions lending to “Better Decision-making through GeoSpatial Information”

More About GIS

Permit Sonoma Geographic Information Systems (GIS) staff serves the needs of County staff, Local, State, and Federal government and the citizens and businesses of the County of Sonoma. Utilizing GIS technology, information regarding geographical elements (e.g. land, river, streets) and their relationships to one another can be visually displayed (for review) and analyzed.

The GIS section is the nucleus of Permit Sonoma’s network, managing, and administrating land use datasets, software and technology. The ultimate goal of Permit Sonoma’s GIS staff is to implement innovative ideas to develop, maintain and provide accurate geographical information in an effort to facilitate land development planning and determinations, while fostering efficient business practices and better decision making.

Additionally, our GIS products and services aid Permit Sonoma’s staff decision and policymaking processes, and seek to improve the livelihood of the citizens of Sonoma County.