Rancho Cucamonga, CA Building Setbacks & Zoning: Lot Coverage Limits (2026)
Key Facts
- Governing table
- Development Code Table 17.36.010-1A
- VL zone lot coverage cap
- 25% of lot area
- L zone lot coverage cap
- 40% of lot area
- LM-TV subzone cap
- 60% of lot area (highest)
- Excluded from coverage calc
- Paving, landscaping, pools, lattice covers
- Reviewed at
- Building permit plan check
Summary
Table 17.36.010-1A caps building footprint at 25 percent of the lot in Rancho Cucamonga's Very Low (VL) residential zone, rising to 40 percent in the Low (L) zone and 50 percent in Low Medium (LM), with the Medium-High and High zones in Table 17.36.010-1B allowing 50 to 60 percent depending on subzone.
C. Residential Site Development Standards. General site development standards for residential zones are listed in Table 17.36.010-1A and Table 17.36.010-1B (Development Standards for Residential Zones)... TABLE 17.36.010-1A DEVELOPMENT STANDARDS FOR RESIDENTIAL ZONES Development Standard/Zone VL VL-EH 14000 VL-EH 9000 L L-ESP LM LM-TV LM-ESP South LM-ESP ... Lot coverage (maximum lot coverage with buildings as a percentage of the parcel or project) Lot coverage 25% 30% 30% 40% 30% 50% 60% 50% 40% ... "Lot coverage" means the area of a lot covered by buildings including eaves greater than 24 inches, projecting balconies, and similar features but excluding ground-level paving, landscaping, open recreational facilities, and lattice patio covers.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: rev 4999536; v21 updated 2026-07-15).
Full Breakdown
010-1A sets lot coverage as a percentage of parcel area for every residential base zone. The Very Low zone (VL) is capped at 25 percent, the two Very Low Estate Home subzones (VL-EH 14000 and VL-EH 9000) at 30 percent each, the Low zone (L) at 40 percent, the Low-Etiwanda Specific Plan subzone (L-ESP) at 30 percent, and the Low Medium zone (LM) at 50 percent, with its Terra Vista subzone (LM-TV) reaching 60 percent and its Etiwanda Specific Plan subzones (LM-ESP South and LM-ESP) at 50 and 40 percent.
010-1B extends the same coverage limits into the Medium, Medium High, and High density zones, listed separately by dwelling-unit-per-acre range. 020: the ground area covered by buildings, including eaves that project more than 24 inches and projecting balconies, but excluding ground-level paving, landscaping, open recreational facilities such as pools, and lattice patio covers. Because those exclusions are written into the definition, a homeowner can pave a driveway or install an open patio cover without counting it against the cap, but an enclosed sunroom or a covered porch with deep eaves does count. 36 is the source for all base-zone development standards, including the height and setback requirements that interact with the same building footprint.
Violations & Fines
Exceeding the lot coverage cap is caught at building permit plan check under Chapter 17.36, since building and safety will not issue a permit for a footprint that exceeds the table limit for the zone. If coverage is added without a permit, such as an unpermitted room addition, the city's general penalty clause, Section 1.12.010(D), applies: up to a $1,000 fine or six months in jail per violation, with each day the excess coverage remains treated as a separate offense, plus required removal or reduction to bring the lot back into compliance.
Frequently Asked Questions
What is the maximum lot coverage allowed on a house in Rancho Cucamonga?
Does a patio cover count toward lot coverage?
Which Rancho Cucamonga zone allows the most building coverage?
Sources & Official References
Other rules in Rancho Cucamonga
California rules heatmap·Compare Rancho Cucamonga to another location·View the California building setbacks & zoning overview
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