Costa Mesa vs Irvine
How do anti-mansionization rules compare between Costa Mesa, CA and Irvine, CA?
Costa Mesa and Irvine have similar restriction levels.
Costa Mesa, CA
Orange County
Orange County zoning controls oversized homes on small lots through floor area ratio limits, height caps, and second-story setback rules in residential zones, particularly within unincorporated foothill and coastal communities.
View full Costa Mesa rules →Irvine, CA
Orange County
Orange County zoning controls oversized homes on small lots through floor area ratio limits, height caps, and second-story setback rules in residential zones, particularly within unincorporated foothill and coastal communities.
View full Irvine rules →Key Facts Comparison
| Fact | Costa Mesa | Irvine |
|---|---|---|
| Typical FAR cap | Thirty-five to fifty percent | Thirty-five to fifty percent |
| Authority | OC Planning Title 7 | OC Planning Title 7 |
| Overlay zones | Coto, North Tustin | Coto, North Tustin |
| Variance findings | Hardship required | Hardship required |
Highlighted rows indicate differences between cities.
Costa Mesa FAQ
How do I calculate my home's floor area ratio?
Divide total habitable square footage by your lot size. Garages and unconditioned space rules vary by zone—check the OC zoning code or call OC Planning before designing.
Can I get a variance to exceed FAR?
Yes, but you must show physical hardship unique to your lot, not just preference. Variances require public notice, planning commission hearing, and neighbor input.
Irvine FAQ
How do I calculate my home's floor area ratio?
Divide total habitable square footage by your lot size. Garages and unconditioned space rules vary by zone—check the OC zoning code or call OC Planning before designing.
Can I get a variance to exceed FAR?
Yes, but you must show physical hardship unique to your lot, not just preference. Variances require public notice, planning commission hearing, and neighbor input.
Compare other topics
See how Costa Mesa and Irvine compare on other ordinance categories.
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