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Subdivision Instructions & Forms

Minor Subdivision

A minor subdivision is a division of land into four (4) or fewer parcels. Minor subdivisions are governed by the Subdivision Map Act (California Government Code, Section 55410, et. Seq.) and the Sonoma County Subdivision Ordinance (Sonoma County Code, Chapter 25). Minor subdivision application are also known as tentative parcel maps.

Major Subdivision

A major subdivision is a division of land into five (5) or more parcels. Major subdivisions are governed by the Subdivision Map Act (California Government Code, Section 66410, et. seq.), the Sonoma County Subdivision Ordinance (Sonoma County Code, Chapter 25), the Sonoma County Zoning Code (County Code, Chapter 26) and the Sonoma County General Plan.

Certificate of Modification

Modifications can be made to a recorded parcel map (Minor Subdivision) or a final map (Major Subdivision) through the Certificate of Modification procedure. Typical modifications to recorded maps include changes to agency notes upon the maps, relocation or removal of easements, and relocation or enlargement of building envelopes.


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Instructions and Forms for Engineers and Surveyors

Showing: 18 of 8

  • County of Sonoma Planning Application Form (PDF: 140 kB) (Revised 09/13/2018)

  • As part of this application, applicant agrees to defend, indemnify, release and hold harmless the County, its agents, officers, attorneys, employees, boards and commissions from any claim, action or proceeding brought against any of the foregoing individuals or entities, the purpose of which is to attack, set aside, void or annul the approval of this application or the adoption of the environmental document which accompanies it. (PDF: 72 kB) (Revised 09/29/2006)

  • A minor subdivision is a division of land into four (4) or fewer parcels. Minor subdivisions are governed by the Subdivision Map Act (California Government Code, Section 55410, et. Seq.) and the Sonoma County Subdivision Ordinance (Sonoma County Code, Chapter 25.) Minor subdivision application are also known as tentative parcel maps.(Revised 05/22/2010)

  • Use this form for Minor Subdivision Supplemental Application (PDF: 76 kB) (Revised 12/10/2003)

  • Identifies the information and materials required for a Certificate of Modification application. (Revised 10/28/2008)

  • Identifies the information and materials required for a Major Subdivision application and to provide an overview of the procedure for processing these applications. A major subdivision is a division of land into five (5) or more parcels. Major subdivisions are governed by the Subdivision Map Act. (Revised 05/22/2010)

  • Supplemental  Information Questionnaire for Major Subdivision (PDF: 54 kB) (Revised 12/08/2008)

  • Understanding and agreement that the applicant is responsible for paying these costs even if the application is withdrawn or not approved.  (PDF: 80 kB) (Revised 12/10/2010)

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