Irvine, CA Building Setbacks & Zoning: Structure Height Limits (2026)

Section 3-9-1 sets the citywide framework: height restrictions apply to every building and structure, including antennas and flagpoles, and the actual number is fixed zone-by-zone in Chapter 3-37's development-standards tables. 2 Low Density Residential district, used in planning areas such as University Park, Westpark and Orchard Hills, Section 3-37-13(G) caps 'maximum building height' at 35 feet. 2 dwelling units per net acre. Method of measurement is defined separately in Section 1-2-1 ('Building Height'), which the height chapter cross-references rather than restates. Section 3-9-1(B) then carves out a citywide exception for non-habitable vertical elements: architectural features, antennae, wireless communication facilities and flagpoles may exceed the applicable zone's maximum by up to 10 feet as of right, or up to 15 feet for Class 4 antennae.

Anything taller than that, a feature more than 10 feet over the limit, or more than 15 feet for a Class 4 antenna, needs a conditional use permit approved by the Planning Commission before it can be built. Projects proposing a structure tall enough to trigger Federal Aviation Regulation Part 77 review must also submit for FAA approval before the City will issue a building permit, per Section 3-9-1(A).