Lot Coverage Limits: Berkeley vs Hayward
How do lot coverage limits rules compare between Berkeley, CA and Hayward, CA?
Hayward has fewer restrictions than Berkeley.
Berkeley, CA
Alameda County
Berkeley R-1 zones limit main building lot coverage to 40 percent and total structure coverage to 50 percent, with ADUs and SB 9 units subject to state-law overrides.
View full Berkeley rules →Hayward, CA
Alameda County
Hayward limits lot coverage by buildings to roughly 40% in single-family zones. Impervious surface totals including driveways are regulated through stormwater and landscape standards.
View full Hayward rules →Key Facts Comparison
| Fact | Berkeley | Hayward |
|---|---|---|
| R-1 main building | 40% max coverage | - |
| R-1 total | 50% max coverage | - |
| Typical FAR | 0.4 to 0.6 | - |
| ADU override | 800 sq ft minimum | - |
| Code | Title 23 | - |
| RS coverage | - | ~40% typical |
| Multi-family | - | FAR-based instead |
| Impervious | - | C.3 over 2,500 sf |
| ADU exemption | - | Partial per state law |
| Low decks | - | Under 30 in excluded |
Highlighted rows indicate differences between cities.
Berkeley FAQ
Does a detached garage count toward coverage?
Yes, all roofed structures count, though ADU state law exempts one 800 sq ft unit from local coverage caps.
Are patios counted?
Unroofed patios generally do not count for lot coverage but may count for impervious surface stormwater limits.
Hayward FAQ
Does my patio count toward lot coverage?
Hard impervious patios count toward stormwater surface limits; open decks under 30 inches high are usually exempt from building coverage.
Will an ADU push me over coverage?
State ADU law limits local agencies from denying ADUs over coverage; ADUs up to 800 sf are typically protected.
Compare other topics
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