The City Limit dataset represents the nine city, urban (incorporated) municipality boundaries within the County of Sonoma. The dataset includes ALL RECORDED ANNEXATIONS to date.Related Resource:Permit Sonoma GIS HomepageSonoma Local Agency Formation Commission(LAFCO)Annexation Report(The annexation report represents unincorporated lands annexed into city jurisdictions.)Refer to Map series per jurisdiction -City of CloverdaleCity of CotatiCity of HealdsburgCity of PetalumaCity of Rohnert ParkCity of Santa RosaCity of SebastopolCity of SonomaTown of Windsor

The Permit Sonoma GIS Parcel dataset represents unincorporated lands & incorporated (city) lands within Sonoma County.

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The City Sphere of Influence (SOI) dataset represents the nine cities, urban (incorporated) municipality sphere of influence boundaries within the County of Sonoma as determined by the Sonoma Local Agency Formation Commission(LAFCO). A "Sphere of Influence" is a physical boundary a local governmental agency is expected to provide services for and is generally set by Sonoma LAFCO with a 20-year time frame. Sphere of Influence boundaries are designated in order to help discourage urban sprawl, limit boundary disputes between local agencies, and provides indications regarding future development potential. A district or City's SOI should not to be construed as "referral" areas or as bestowing authority and control in the sphere area. LAFCO can amend a SOI if there are sound reasons to do so.Related Resource:Permit Sonoma GIS HomepageSonoma Local Agency Formation Commission(LAFCO)Annexation Report(The annexation report represents unincorporated lands annexed into city jurisdictions.)Refer to Map series per jurisdiction -City of CloverdaleCity of CotatiCity of HealdsburgCity of PetalumaCity of Rohnert ParkCity of Santa RosaCity of SebastopolCity of SonomaTown of Windsor

The Permit Sonoma GIS Parcel dataset represents unincorporated lands & incorporated (city) lands within Sonoma County.

The Urban Growth Boundary (UGB) dataset represents the nine cities, urban (incorporated) municipality urban growth boundaries within the County of Sonoma. The UGB is a planning tool used to limit growth around a city and promote efficient provision and expansion of city services outside city limits.As defined by the Sonoma Local Agency Formation Commission (LAFCO; May 2003): An Urban Growth Boundary is a voter-enacted boundary for those City's which reside within the County of Sonoma. The boundary depicts the maximum growth over a specific period of time (typically 20 year time frame) as desired by the voters (residents) within the City's and acts as a control measure by the people. The jurisdiction of the boundary resides with the City's and thus, any modifications and/or amendments must be voted on by the registered voters within the City limits. Therefore, LAFCO has no jurisdiction as to the establishment of the urban growth boundaries beyond that of the City's Sphere of Influence (a.k.a. SOI). See Data Quality - Attribute Accuracy tab for boundary modification history.Related Resource:Permit Sonoma GIS HomepageSonoma Local Agency Formation Commission (LAFCO)Annexation Report (The annexation report represents unincorporated lands annexed into city jurisdictions.)Refer to Map series per jurisdiction -City of CloverdaleCity of CotatiCity of HealdsburgCity of PetalumaCity of Rohnert ParkCity of Santa RosaCity of SebastopolCity of SonomaTown of Windsor