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Los Angeles County, CA Building Setbacks & Zoning: Lot Coverage Limits (2026)

Some Restrictions

Compiled from the official code textEditor Martyn O'NeillLast verified August 2026

Key Facts

Building coverage cap: 50% of net lot area
Zone: RPD only
Exempt: Common recreational buildings
Approval needed: Conditional Use Permit
Scope: Unincorporated area only

Summary

In Los Angeles County's unincorporated Residential Planned Development (RPD) zone, buildings built as a planned residential development under a Conditional Use Permit cannot cover more than 50 percent of the net lot area, though common recreational buildings are exempt from that cap.

City-specific rules exist: Carson, West Covina, El Monte, Inglewood, Norwalk, Santa Clarita, Glendale, Pasadena, Palmdale, Pomona, Lakewood, Lancaster, Compton, Santa Monica, Los Angeles, South Gate, Downey, and Long Beach have their own lot coverage limits rules that differ from Los Angeles County's county-level regulations. If you live in one of those cities, check the city-specific page instead.

Buildings shall not occupy more than 50 percent of the net area, except that common recreational buildings are excluded from this building coverage limitation.

Source: LA County Code Section 22.110.170 - Floor Area and Lot CoverageView official code

Full Breakdown

Title 22's zoning code caps building coverage at 50 percent of net lot area for planned residential developments in Zone RPD, approved under a Conditional Use Permit (LA County Code Sec. 22.18.060.C, Sec. 22.158). Common recreational buildings serving residents don't count toward the cap. The base residential zones (R-1 through R-5) carry no separate lot-coverage percentage of their own -- they're controlled instead through required yard depths (Table 22.18.040-A) and height limits under Sec. 22.18.040. Regional Planning reviews RPD site plans for compliance before building permits issue, and this rule governs unincorporated county land only, not the 88 incorporated cities.

Violations & Fines

Exceeding the 50 percent building coverage limit blocks Conditional Use Permit approval for the planned residential development; Regional Planning can deny or condition the permit, and building permits for a noncompliant site plan won't issue until it's revised.

Frequently Asked Questions

Does the 50 percent cap apply inside the City of Los Angeles?

No. It only applies to the Residential Planned Development zone in unincorporated LA County -- each of the 88 incorporated cities sets its own lot coverage rules.

Do standard R-1 or R-2 lots have a lot coverage percentage?

No. Those base zones don't carry a standalone coverage percentage -- they're controlled through required yard depths and building height limits instead.

Sources & Official References

[1]Los Angeles County Code Sec. 22.18.060 (Municode)

Other rules in Los Angeles County

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All Los Angeles County rules

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