Orange, CA Building Safety: Anti-Mansionization (2026)
Key Facts
- Governing section
- OMC § 17.14.070, Table 17.14.070
- FAR under 10,000 sf lot
- 0.60 maximum
- FAR 10,000-39,999 sf lot
- 0.50 maximum
- FAR 40,000+ sf lot
- 0.40 maximum
- Standard height limit
- 32 feet, 2 stories
- Near R1 zone, within 70 ft
- 1 story or 20 feet
- Enforcing agency
- Community Development Dept., Building Division
Summary
Every primary home built or expanded in Orange's residential zones must fit under the floor area ratio ceiling set by lot size: 0.60 FAR on lots under 10,000 square feet, dropping to 0.50 and then 0.40 as lots grow past 40,000 square feet. Table 17.14.070 also caps most homes at 32 feet and two stories, checked against every building permit.
(g) Building height is the vertical distance from the average finished grade, as measured around the perimeter of the structure five feet out from the exterior wall surface to the highest point of the structure, that being the ridgeline of the roof or the top of the parapet wall on a flat roof. Chimneys and other similar devices may exceed the height requirement. Greater height or additional stories for habitable space may be permitted under Section 17.14.100. ... (u) Floor area ratio (FAR) shall vary according to lot area as follows: Lot Area in Square Feet Maximum FAR <10,000 0.60 10,000—39,999 0.50 >40,000 0.40
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: rev 4796775; v10 updated 2026-01-27).
Full Breakdown
070 sets the development standards table governing every primary residential structure citywide, and its footnotes are what keep new houses from overwhelming their lots. 40 FAR. 40 FAR regardless of size. 50 FAR based on pad size. 070 caps most residential zones at 32 feet and two stories. Where a project sits within 70 feet of an R1 single-family zone, footnote (j) drops the ceiling further, to one story or 20 feet, whichever is less. Building square footage under footnote (o) includes every structure on the lot, garages and accessory buildings included, so additions and detached structures count against the same ceiling as the main house. 10.
Violations & Fines
Building without a permit or exceeding the FAR or height limits in Table 17.14.070 is enforced as a general code violation under § 1.08.010: a misdemeanor punishable by up to $1,000 and six months in County Jail, or, at the City Attorney's discretion, an infraction carrying fines of $100 for a first offense, $200 for a second within a year, and $500 for each additional violation. Each day a violation continues is a separate offense.
Frequently Asked Questions
What is the maximum floor area ratio for a house in Orange?
How tall can a new house be in Orange?
Does an addition count toward the FAR limit in Orange?
Is the R1-5 zone subject to a different FAR limit?
Sources & Official References
Other rules in Orange
California rules heatmap·Compare Orange to another location·View the California building safety overview
See something wrong?
Help us keep this page accurate. If you notice an error or outdated information, let us know.
Anti-Mansionization in Nearby Cities
How other cities in Orange County handle anti-mansionization.