Riverside, CA Building Setbacks & Zoning: Lot Coverage Limits (2026)
Key Facts
- R-1-7000 max lot coverage
- 40%
- R-1-8500 / R-1-10500 max coverage
- 35%
- RA-5 / RR / RE / R-1-13000 max coverage
- 30%
- RC zone coverage
- N/A (slope-based lot area instead)
- Small R-1 lot (1,500-2,499 sf) max coverage
- 55%
- Governing table
- Table 19.100.040.A
Summary
Riverside caps how much of a single-family lot a structure can cover, and the number moves with the zone. Table 19.100.040.A sets a 30% maximum for RA-5, RR, RE, R-1-½ Acre and R-1-13000 lots, 35% for R-1-10500 and R-1-8500, and 40% for the smallest standard lot, R-1-7000.
Table 19.100.040.A Residential Development Standards: Single-family Residential Zones -- Development Standards | RA-5 | RC | RR | RE | R-1-½ Acre | R-1-13000 | R-1-10500 | R-1-8500 | R-1-7000. Lot Coverage - Maximum 30% N/A 30% 30% 30% 30% 35% 35% 40%
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 33).
Full Breakdown
The lot coverage figures sit inside the same table that sets density, lot area, lot width, height and setbacks for every single-family zone. 050 -- half an acre on slopes under 15%, two acres on 15-30% slopes, and five acres above 30% slope. Minimum lot areas paired with the coverage caps range from five acres in RA-5 down to 7,000 square feet in R-1-7000, with matching front setbacks stepping down from 40 feet in RA-5 to 20 feet in R-1-7000. Building height is capped at 35 feet in most single-family zones (20 feet in RC), and the table allows up to 60% of units in certain zones to reach three stories at a 40-foot maximum.
065 supersedes the standard table: lots between 1,500 and 2,499 square feet get a 55% coverage allowance, dropping to 50% for 3,500-4,499 square foot lots and 45% for 4,500-5,499 square foot lots, each paired with its own front, side and rear setback schedule and a flat 20-foot garage/carport setback.
Violations & Fines
The Building Official checks lot coverage against Table 19.100.040.A (or Table 19.100.065 on qualifying small lots) before issuing a building permit, and Section 19.090.040 makes any permit issued in conflict with the Zoning Code void and without effect. A structure built beyond the coverage cap without an approved variance or Planned Residential Development exception is a zoning violation subject to code enforcement requiring removal or reduction of the noncompliant coverage.
Frequently Asked Questions
What's the maximum lot coverage for a typical Riverside R-1 lot?
Why doesn't the RC zone have a lot coverage percentage?
Can a small infill lot get more than 40% coverage in Riverside?
Does lot coverage include accessory structures like sheds?
Sources & Official References
Other rules in Riverside
California rules heatmap·Compare Riverside to another location·View the California building setbacks & zoning overview
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Lot Coverage Limits in Nearby Cities
How other cities in Riverside County handle lot coverage limits.