FAQ - Mapping - Permit & Resource Management Department

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Mapping

What kind of maps do you have?

The PRMD Geographic Information System (PRMD/GIS) product price list includes base maps, land maps, resource maps, and aerial/ortho photo maps. These cover the entire county at several scales.

The digital data layers include both the graphical features (such as road lines) and the tabular data (items such as address range, etc). All of the data layers built by the county are copyrighted.

The following maps and data CD’s are available for purchase at PRMD.

Product Price List - available for purchase at PRMD
Map Type	Description	Price
Land Use	By Planning Area, Black & White	$10.00
	Set of 10 maps, Black & White	$100.00
	By Planning Area, Color*	$25.00
	Set of 10 maps, Color (4 day wait)*	$250.00
	Land Use Map site-specific 11" x 17", Color	$5.00
Zoning Maps	Zoning Map site-specific 11" x 17", Color	$5.00
	Zoning Map site-specific 33" x 43", Color	$25.00
Digital Zoning Table	http://www.sonoma-county.org/prmd/docs/zoning_data/index.htm	Free
Coastal Land Use	Coastal Area, Black & White	$10.00
	Coastal Area, Color	$25.00
Open Space	By Planning Area, Black & White	$10.00
	Set of 10 maps, Black & White	$100.00
	By Planning Area, Color	$25.00
	Set of 10 maps, Color (4 day wait)*	$250.00
Digital Data on CD	Land Use, Coastal Land Use or Open Space in Shapefile format.	$25.00
	Airport Land Use Plan AutoCAD2000 drawing files.	$25.00
	Historic Ordinance Maps jpg files	$25.00
Parcel and Topographic Maps	USGS 7.5' Quadrangle Topographic map 1" = 2,000' - Index	$5.00
	County parcels with USGS topography 1" = 1000' (circa 1985)	$2.00
	County parcels with USGS topography 1" = 500' (circa 1985)	$3.00
	Site specific with current parcels and topo Black & White 33"x43"	$10.00
	Site specific with current parcels and topo Color 33"x43	$25.00
	Site specific with current parcels and topo Color or Black & White 8.5"x11"	$5.00
	Site-specific with current parcels and topo Color or Black & White 11"x17"	$5.00
Special Report 120	Earthquake, Tsunami, Epicenter, Slope Stability (8 sheets - price per sheet)	$10.00
City Boundaries	City boundaries of Sonoma County, Color 11"x17"	$5.00
Alquist Priolo	Seismic hazards with USGS topography 1" = 2,000' Black & White	$5.00
Soils	Soils map by Quad with parcels 1" = 2,000' Black & White	$5.00
	Soils Map Site-specific 11" x 17", Color	$5.00
Assessor Parcel Map Book Index	Assessor Parcel Map Book Numbering Index, Color 33"x43" (1 day wait)*	$25.00
Township Base Map	Township, Section, Range with CA Zone II grid and Lat/Long, Color (1 day wait)*	$25.00
Groundwater Availability	Groundwater Availability, Color 11"x17"	$5.00
	Groundwater Availability, Color 33"x 43"	$25.00
Williamson Act	Williamson Act Map Color 33"x43"	$25.00
Aerial Photos	1980 or 1990 air photos, no parcels 1"= 500'	$5.00
	Year 2000 Site-specific digital aerials Color or Black & White 11" x 17" (1 day wait)*	$5.00
	Year 2000 Site specific digital aerials no parcels Black & White 33"x43"	$25.00
	Year 2004 Site-specific digital aerials, Color 33"x43"	$25.00
Aerial Photos on GIS Portal	https://gis.sonoma-county.org/	Free
Special Projects	Various maps previously made for special projects, if available.	Varies
Mailing Costs	Any maps mailed to customers have an additional fee.
	Folded map	$2.50
	Rolled tube map	$7.50
	*Pre-Payment required for these products.

Maps available for viewing in the Records area at PRMD Note: A GIS Tech can not assist you in interpreting these maps.
Map Title	Map Author
Special Report 120 Geology for Planning in Sonoma County - Includes: Surface Geology Seismic Shaking Earthquake Epicenters	Published by California Division of Mines and Geology
FEMA Flood Insurance Rate Maps (FIRM)	Published by the Federal Emergency Management Agency
Alquist-Priolo Special Studies Fault Zone	California Geological Survey
USGS 7.5 Minute Topographic Maps of Sonoma County	United States Geological Survey
General Plan Open Space Maps	Sonoma County PRMD
General Plan Land Use Maps	Sonoma County PRMD

Does PRMD have Geographic Information Systems (GIS) data available?

Yes - we offer several data layers on CD’s for sale in ESRI shapefile format. See the product price list.

There are also free downloadable shapefiles and aerials available on the GIS Portal at https://gis.sonoma-county.org/

Other data may be available from ISD GIS Central by calling the GIS Request Line at 707-565-3819 or via e-mail at gis@sonoma-county.org

Do you produce custom maps?

Not at this time, however our GIS Technicians can assist with locating your area of interest using your Assessor Parcel Number (APN) or a correct street address. This information can then be used to create a semi-custom map using the available PRMD data layers. See the product price list.

How do I locate my property on PRMD's maps?

PRMD GIS techs will assist you with this when you visit the department.

What is my parcel number?

The Assessor's Parcel Number is the number assigned to a parcel by the County Assessor for property tax assessment purposes. This number is located on your property tax bill as shown below. If you don't have a tax bill available, we can locate the property if you provide us with the street address and the owner's name. Please call (707) 565-1900 during planner phone hours and ask to speak with the planner phone.

What size and scale do PRMD/GIS maps come in?

Our maps come in 3 standard sizes:

8-1/2 x 11 inches (A size)
11 x 17 inches (B size)
33 x 43 inches (E size)

Not all maps are available in all sizes. See the product price list.

Scale is dependent on the resolution at which the data is best viewed. Unless instructed otherwise we will print at the sharpest clarity.

How can I get a copy of an Ordinance map that shows re-zoning information?

Copies of adopted ordinances which officially changed the zoning on a particular property are available from the Board of Supervisor's office.

How can I get a flood determination on my property?

The staff at the Storm Water cubicle at PRMD can make the flood determination.
You may also purchase a site-specific zoning map, which shows the F1 Floodway and F2 Floodplain.

What is the Groundwater Availability Zone for my property?

The staff at the Well and Septic cubicle at PRMD can make the Groundwater Availability determination.
You may also purchase a Groundwater Availability map. See the product price list.

Although every effort is made to provide complete and accurate information on this website, users are advised to contact appropriate PRMD staff before making project decisions. This may involve contacting more than one section within PRMD (e.g. Building, Plan Check, Zoning, Well & Septic, etc.), since each section implements specific codes or ordinances which may affect your project.

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