Environmental Rules in Sunnyvale, CA (2026)
4 verified environmental rules for Sunnyvale, California, sourced directly from the municipal code and official government pages.
Verified from official government sources
Stormwater Management
Sunnyvale enforces stormwater controls under SMC Chapter 12.60 and the statewide Municipal Regional Permit. Only rain may enter storm drains; pollutants are prohibited.
Stormwater Rules in Sunnyvale
Heavy RestrictionsErosion Control
Sunnyvale requires erosion and sediment controls on grading and construction sites under SMC Chapter 18 and the Municipal Regional Stormwater Permit.
Erosion Control Rules in Sunnyvale
Some RestrictionsFlood Zones
Sunnyvale maps flood hazards through FEMA and enforces floodplain rules under SMC Chapter 18. Properties in Zones A and AE must meet NFIP construction standards and carry flood insurance if federally financed.
Flood Zone Rules in Sunnyvale
Heavy RestrictionsGrading & Drainage
Grading of 50 cubic yards or more requires a grading permit in Sunnyvale under SMC Title 16. Lot drainage must direct water away from structures and neighbors without causing nuisance.
Grading and Drainage Rules in Sunnyvale
Some RestrictionsLooking for Santa Clara County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Sunnyvale city rules.
Environmental Rules in Santa Clara County →