Erosion Control: Costa Mesa vs Newport Beach

Do I need a grading permit for minor landscaping in Costa Mesa?

Minor landscape fills less than three feet deep that do not exceed 50 cubic yards and do not obstruct a drainage course may be exempt from full grading permit requirements. Contact Development Services at (714) 754-5245 to confirm your project qualifies for an exemption.

What erosion controls are required during construction in Costa Mesa?

Construction sites must implement BMPs including silt fences, fiber rolls, stabilized construction entrances, dust control measures, and proper material storage. Projects disturbing one or more acres must also file a SWPPP with the State Water Resources Control Board.

What grading code does Costa Mesa follow?

Costa Mesa has adopted Article 8 of Title 7 of the Orange County Codified Ordinances, including the OC Grading Manual, with some local modifications specific to the city.

When is erosion control required in Newport Beach?

All construction and grading projects must implement erosion control. BMPs must be active year-round, with enhanced measures required during the rainy season from October 1 through April 30. Plans must be submitted with grading permit applications.

What BMPs does Newport Beach require for erosion control?

Common required measures include silt fences, fiber rolls, stabilized construction entrances, hydroseeding, sediment basins, and proper stockpile management. The specific BMPs depend on project size, slope, and proximity to waterways.

Can the city stop my project for erosion issues?

Yes. The Grading Division has authority to issue immediate stop-work orders for projects without adequate erosion control. Work cannot resume until compliant BMPs are installed and verified by inspection.