Grading & Drainage: Riverside vs Temecula

Do I need a grading permit to level my backyard in Riverside?

If you will move more than 50 cubic yards of soil, yes — RMC Title 17 requires a permit. Smaller moves may be exempt under RMC §17.12.010, but you still must keep drainage flowing away from structures and prevent sediment from entering the storm drain.

How long does grading plan check take in Riverside?

Public Works targets 20 business days for first plan-check review and 10 business days for each resubmittal, whether the project is grading only or grading with a Water Quality Management Plan.

Can my neighbor regrade their lot so it drains onto mine?

No. RMC §17.28.010.E and the California Building Code require lot drainage to be directed away from structures and not concentrated onto adjacent properties. If approved plans show drainage onto your lot improperly, contact Public Works and Code Enforcement; civil nuisance remedies may also be available.

Can I regrade my backyard without a permit?

Minor work under 50 cubic yards and 5,000 sq ft with no significant slope change is exempt. Anything more — including moving dirt for a pool excavation — needs a permit.

What if my neighbor's drainage floods my yard?

Document with photos and dates. Contact the neighbor first, then file a complaint with Code Enforcement. Civil Code §831 may support a private nuisance claim if alterations changed flow patterns.

How tall can a retaining wall be without engineering?

Under 4 feet (bottom of footing to top) with no surcharge can usually be built without engineering, but still needs to comply with setbacks. Anything taller or supporting loads needs engineered plans.