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Grading, Flood & Drainage Handouts/Forms/Applications

There are some duplicate CNI (Construction Inspection) and BPC (Building Plan Check) handouts due to building code changes that became effective January 1, 2008. The version including an x in the title of the form is to be used only for construction projects that were submitted prior to January 1, 2008. For example: Special Inspection and Testing Procedure, CNI-010x (Pre Jan 1 2008 Projects). For all projects submitted on or after January 1, 2008, refer to the form without an x in the title.

Some of these documents are saved in Portable Document Format (PDF). We recommend you download Adobe® Reader®, a free software that allows you view and print PDF files.

For accessibility assistance with these documents, please contact the Sonoma County Permit and Resource Management Department (PRMD) at (707) 565-1900.


Please note: Although PRMD is continuously working to maintain these documents, some may not reflect the requirements of the currently adopted, triennial code cycle. Please make use of the revision date in the footer of the document as a guide to identifying the currency of a particular document.





Agricultural Building Permit Exemption


Building Permit Application (example)


Building Permit Application - Revised Information


Development Submittal Information for Drainage Review


Drainage Report Required Contents


Drainage Review Submittal Information for Flood Zone Determination

NPD-007 Dry Season Best Management Practices for Construction Sites


Flood Damage Electrical Circuit Megohmeter Testing


Grading  Drainage Supplemental Information


Grading Permit Questionnaire


Grading Permit Required Application Contents


Minimum Standard Site Plan


Preliminary Storm Water Mitigation Plan Worksheet


Protection of Stormwater Quality on Construction Sites


Required Grading Inspections


Roiling Permit Application


Standard Urban Storm Water Mitigation Plan Questionnaire


Waterway Setback Requirements

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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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Permit and Resource Management Department County of Sonoma