Lot Coverage Limits: San Diego vs Vista
How do lot coverage limits rules compare between San Diego, CA and Vista, CA?
San Diego and Vista have similar restriction levels.
San Diego, CA
San Diego County
Lot coverage limits in San Diego are established by zone in the development regulation tables of the Land Development Code (Tables 131-04C through 131-04G). Coverage varies by zone from approximately 50-60% for single-family zones to higher percentages for multi-family zones. ADUs of 800 sq ft or smaller are exempt from lot coverage calculations. Guest quarters and non-habitable accessory structures are permitted in addition to ADUs.
View full San Diego rules →Vista, CA
San Diego County
Lot coverage limits in unincorporated San Diego County are set by the Zoning Ordinance. Coverage typically ranges from 25% to 60% depending on zone. ADUs up to 800 sq ft are exempt from lot coverage calculations per state law.
View full Vista rules →Key Facts Comparison
| Fact | San Diego | Vista |
|---|---|---|
| Code Section | SDMC Ch. 13, Tables 131-04C-G | - |
| RS Zones | Typically 50-60% maximum coverage | - |
| ADU Exemption | Units 800 sq ft or less exempt from lot coverage | - |
| Accessory Structures | Permitted in addition to ADUs | - |
| Varies By Zone | Check specific zone development regulation table | - |
| Rural Zones | - | 25–35% typical |
| Semi-Rural | - | 35–50% typical |
| Village Residential | - | Up to 60% |
| ADU Exempt | - | Up to 800 sq ft does not count |
| Includes | - | All roofed structures at foundation |
Highlighted rows indicate differences between cities.
San Diego FAQ
What percentage of my lot can I build on?
Lot coverage limits vary by zone. Check Tables 131-04C through 131-04G in the Land Development Code for your zone's specific maximum. Most RS zones allow 50-60%.
Do ADUs count toward lot coverage?
ADUs of 800 square feet or smaller are exempt from lot coverage, FAR, and open-space calculations per state ADU law and San Diego's implementing ordinance.
Vista FAQ
What is the lot coverage limit for my property?
It depends on your zoning designation. Rural zones typically allow 25-35%, semi-rural 35-50%, and village residential up to 60%. Contact County PDS for your specific zone's limit.
Does an ADU count toward lot coverage?
ADUs up to 800 sq ft are exempt from lot coverage calculations per state law. Larger ADUs may count toward the coverage limit.
Do pools count as lot coverage?
Swimming pools and uncovered decks typically do not count toward lot coverage. Only roofed structures measured at their foundation footprint are counted.
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