Santa Clara, CA Building Setbacks & Zoning: Lot Coverage Limits (2026)

030, sets structure coverage as a maximum percentage of parcel area rather than a flat impervious-surface number. For parcels under 10,000 square feet, R1-6L and R1-8L single-family lots are capped at 40% building footprint coverage, R2 two-family lots at 45%, R3 multi-family lots at 60%, and R4 lots at 80%. The table splits the standard by parcel size: for parcels of 10,000 square feet or greater, the R1-6L, R1-8L and R2 caps hold steady at 40%, 40% and 45%, while the R3 and R4 columns list 'None,' meaning the flat percentage cap drops away once those higher-density lots reach 10,000 square feet and other Title 18 standards, such as height, density and setback envelopes, govern the buildable footprint instead.

Coverage is measured against the structures themselves, not paving or hardscape, so driveways and patios are addressed separately under other Table 2-3 entries such as street frontage and setback rules. Any structure that exceeds the applicable percentage requires either a redesign or a discretionary variance from the Zoning Administrator, since Table 2-3 numbers are treated as by-right maximums, not defaults staff can waive administratively. 14. Building permit applications for new residential construction or additions are checked against these percentages during plan review by the Community Development Department before a permit is issued.