Santa Paula requires grading permits for earthwork exceeding 50 cubic yards or cuts/fills over 3 feet deep. All grading must maintain positive drainage away from structures and may not redirect water onto neighboring properties. Projects on hillsides face additional geotechnical requirements.
Under Santa Paula building code and grading ordinance, a grading permit is required for earthwork exceeding 50 cubic yards of cut or fill, cuts or fills deeper than 3 feet, or any grading on slopes steeper than 5:1 (horizontal:vertical). Grading plans must be prepared by a licensed civil engineer and show existing and proposed contours, drainage patterns, erosion control measures, and retaining wall locations. All grading must maintain positive drainage away from structures and may not redirect surface water onto neighboring properties or the public right-of-way. Hillside development may require geotechnical and soils reports. Santa Paula's location in the Santa Clara River Valley with surrounding hillsides makes drainage management critical — mudflows and debris flows are risks during heavy rain events, particularly on slopes burned by wildfire (post-Thomas Fire debris flow risk).
Grading without a permit results in a stop-work order and requirement for retroactive permit at double fee. Unpermitted grading that causes drainage onto neighboring properties or the public right-of-way may result in civil liability and city-ordered remediation. Grading during rainy season without proper erosion control carries SWRCB fines.
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