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

Lot coverage in the incorporated City of Westminster is controlled through the residential development standards in Westminster Municipal Code Section 17.210.015, Table 2-3, which governs how intensively a parcel in the R1 through R5 zones may be developed, working together with the setback (WMC 17.300.020), height (WMC 17.300.025) and landscaping (WMC Chapter 17.310) standards. The R1 single-family zone is limited to detached dwellings at densities no greater than seven units per acre, and the code requires a minimum amount of landscaping to be maintained in the front yard for the R1 district and for single-family uses in any residential district — a landscaping requirement that effectively limits how much of the front yard can be paved or built over. The published city summary references Table 2-3 for the precise development standards but does not expose every numeric cell, so the exact maximum lot-coverage percentage for each residential zone should be read directly from Table 2-3 or confirmed with Westminster's Planning Division rather than assumed; this reference avoids stating a coverage percentage that could not be verified against the source. In practice, the combination of the required front, side and rear setbacks, the front-yard landscaping minimum, and any Table 2-3 coverage figure together determine the maximum building footprint allowed on a given lot. These are genuine city zoning standards adopted under Title 17, distinct from the statewide Building Code, which addresses construction safety rather than lot-coverage ratios.