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Sonoma County, California Building Footprints

Sonoma County, California
  • Added 12 Feb 2019

Building outlines for permanent visible structures in Sonoma County. Original building outline capture for Sonoma County included only those areas in Sonoma County where the 2000 orthophotography resolution was one foot per pixel or less. In addition, building outlines were not captured for the cities of Sonoma and Healdsburg, but were added at a later date. For areas where the orthophotography resolution was greater than one foot per pixel, a point was captured representing the location of the structure. The point was subsequently converted into a 36 sf polygon. These polygons were then added to the Building Outline layer. As a result, some areas of the county may not have representative building outlines. As new orthophotography becomes available, new building outlines are added. This layer is a work in progress and the County of Sonoma does not guarantee 100% coverage for representative building outlines.

© County of Sonoma GIS Central
This layer is sourced from


RegionsSonoma County

Technical Details

Layer ID 99396
Data type Vector multipolygon
Feature count 277042 (incl. 6 with empty or null geometries)
Attributes Originator, DigitizedSource, CntyPub, TS, Height, Stories, Editor, Type, Name
Services Vector Query API


Added12 Feb 2019
Revisions 1 - Browse all revisions
Current revision Imported on Feb. 12, 2019 from Esri JSON in NAD83 / California zone 2 (ftUS). 93 geometries modified to be OGC compliant. Changelog.
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