Irvine, CA Building Setbacks & Zoning: Setback Rules (2026)

2 Low Density Residential, the zone covering University Park, Westpark and Orchard Hills. Street-facing setbacks scale with the road: 50 feet from a freeway, transportation corridor or major highway, 42 feet from a primary highway, 35 feet from a secondary highway in a nonresidential area but only 25 feet in a residential area, 15 feet from a commuter highway or local street, and 10 feet from a private drive. Interior lot lines are governed separately from street frontage: where a Low Density Residential lot backs onto another residential use, the side setback drops to 5 feet and the rear setback is 10 feet; where it instead backs onto a nonresidential use, both the side and rear setbacks rise to 10 feet.

A freestanding building-to-building separation of 6 feet applies regardless of the property line. General setback mechanics, how the setback is measured, what's allowed to intrude into it, and a citywide exceptions matrix keyed to specific roadway segments, sit in § 3-27-2, which every zoning category's table cross-references, so a project on a listed arterial should check that matrix before relying on the § 3-37-13(I) figures alone. These distances are also subject to the eave and side-yard-easement rules in § 3-27-2(A)(4) for lots with a dedicated easement.