Native Plants: Castro Valley vs Fremont
How do native plants rules compare between Castro Valley, CA and Fremont, CA?
Fremont has fewer restrictions than Castro Valley.
Castro Valley, CA
Alameda County
Native and drought-tolerant plants are encouraged throughout Alameda County. State MWELO requires climate-appropriate plants for new landscapes, and EBMUD/ACWD offer rebates for lawn-to-native conversions.
View full Castro Valley rules →Fremont, CA
Alameda County
Fremont encourages California native and Bay-Friendly landscaping through rebates and simplified permits. Native oak preservation applies. ACWD Bay Save lawn conversion programs available.
View full Fremont rules →Key Facts Comparison
| Fact | Castro Valley | Fremont |
|---|---|---|
| MWELO threshold | 500 sqft new landscape | - |
| Rebates | EBMUD, ACWD lawn conversion | - |
| Suggested natives | Live oak, toyon, Ceanothus | - |
| Fire-wise list | CAL FIRE maintains | - |
| Technical help | ACRCD free | - |
| Rebate | - | About 2 dollars per sq ft |
| Native Oaks | - | Protected at 10 in DBH |
| HOA Limits | - | Void under Civ Code 4735 |
| Permits | - | Not needed for simple swaps |
| Programs | - | ACWD Bay-Friendly |
Highlighted rows indicate differences between cities.
Castro Valley FAQ
Do I have to plant natives?
No, but MWELO requires climate-appropriate species in new and major renovation landscapes, and rebates are tied to low-water-use plant palettes.
Are natives fire-safe?
Many but not all; chamise and dry grasses are flammable, while coast live oak and redwood are relatively fire-resistant; use CAL FIRE Ready For Wildfire plant guidance.
Fremont FAQ
What are good Fremont native plants?
Coast live oak, California buckeye, toyon, coffeeberry, California lilac, manzanita, sages, deer grass, California fescue, and yarrow thrive in Fremont hot-summer dry-winter climate. The East Bay CNPS chapter provides a full plant list.
Can my HOA require me to keep a lawn?
No. California Civil Code 4735 prohibits HOAs from banning low-water landscaping or penalizing members for dormant lawns during drought. HOAs can still require neat maintenance and reasonable design review.
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