Chino Hills, CA Building Setbacks & Zoning: Lot Coverage Limits (2026)

Row D of Table 20-1(A), Maximum Lot Coverage by Buildings, sets the residential lot-coverage ceiling for each of Chino Hills' six residential zoning districts. R-A and R-R, the City's largest-lot estate and rural residential districts, carry no maximum building-coverage percentage at all, listed as not applicable, reflecting their five-acre and 20,000-square-foot minimum lot sizes. The R-S single-family district, by contrast, caps building coverage at 40 percent of the lot, and the multi-family districts allow more: RM-1 permits 55 percent, while RM-2 and RM-3 both permit 60 percent lot coverage by buildings.

A separate row, E, addresses impervious surface coverage specifically within the front yard setback in the R-A, R-R, and R-S districts, again not applicable in the RM districts, which are governed instead by the building-coverage figure. Footnote (h) to that row explains the front-yard impervious limit is the greater of 50 percent of the front setback area or the combined area of the driveway apron, one additional 15-foot-wide strip beside the driveway, and up to two five-foot-wide walkways, with the remainder required to be landscaping or another pervious surface such as bark or decomposed granite; the footnote also states that permeable concrete still counts as impervious surface for this calculation.

Footnote (i) adds that asphalt has not been an allowed paving material within the front setback since June 9, 2016. 82 rather than an active violation.