Lot Coverage Limits: Altadena vs Inglewood
How do lot coverage limits rules compare between Altadena, CA and Inglewood, CA?
Altadena and Inglewood have similar restriction levels.
Altadena, CA
Los Angeles County
Altadena R-1 max Gross Structural Area (GSA) and lot coverage = (0.25 × net lot area) + 1,000 sq ft, never exceeding 9,000 sq ft total (Altadena CSD 22.306.070.A.4).
View full Altadena rules →Inglewood, CA
Los Angeles County
Nonresidential buildings are limited to 70% lot coverage maximum. No enlarged or altered building may extend beyond 70%. Residential lot coverage varies by zone. Building separation requirements add additional constraints (10 ft between one-story structures, 16 ft involving two-story).
View full Inglewood rules →Key Facts Comparison
| Fact | Altadena | Inglewood |
|---|---|---|
| Code Section | Altadena CSD 22.306.070.A.4 | - |
| GSA Formula | 0.25 × lot area + 1,000 sf | - |
| Maximum Cap | 9,000 sq ft | - |
| Excluded From GSA | Cellars + auto garages/carports | - |
| Nonresidential | - | 70% maximum lot coverage |
| Building Separation | - | 10 ft (1-story); 16 ft (2-story) |
| Residential | - | Varies by zone |
| Code | - | IMC Chapter 12 |
Highlighted rows indicate differences between cities.
Altadena FAQ
How big a house can I build on a 10,000-sq-ft Altadena lot?
Maximum GSA = 0.25 × 10,000 + 1,000 = 3,500 sq ft (excluding garage and cellar). The absolute cap is 9,000 sq ft on any lot.
Inglewood FAQ
What counts as lot coverage?
All impervious surfaces: buildings, garages, driveways, patios, and walkways. Permeable pavers may be partially excluded.
How do I calculate my lot coverage?
Divide total impervious surface area by total lot area. Check Inglewood zoning for your district’s maximum.
Compare other topics
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