Garden Grove vs Newport Beach

When do I need a grading permit in Garden Grove?

A grading permit is required when excavation or fill work exceeds approximately 50 cubic yards. Smaller projects may be exempt but must still maintain proper drainage. Contact Community Development at (714) 741-5312 to confirm your project requirements.

Can my grading project direct water onto a neighbor's property?

No. All grading must maintain proper drainage patterns and direct stormwater to approved outlets such as streets or storm drains. You cannot alter the grade of your property in a way that causes water to flow onto adjacent lots.

Do I need an engineer for grading work in Garden Grove?

Yes, grading plans for permitted projects must typically be prepared by a California-licensed civil engineer. The plans must show existing and proposed contours, drainage patterns, erosion controls, and any retaining wall details.

When do I need a grading permit in Newport Beach?

Grading permits are required for excavation or fill exceeding 50 cubic yards, cuts deeper than 5 feet, fills higher than 3 feet, or any grading on steep slopes. Contact the Building Division at (949) 644-3200 for specific thresholds.

Do I need a drainage plan for my Newport Beach project?

Yes. All development projects must include a drainage plan showing how stormwater will be managed on-site and directed to approved outlets. Plans must demonstrate no adverse impact on neighboring properties or public infrastructure.

Can I build a retaining wall without a permit?

Retaining walls up to 3 feet in height generally do not require a permit unless they support a surcharge load or are on a slope. Walls exceeding 3 feet require a building permit with structural engineering calculations.