Historic Preservation in Ontario, CA (2026)
1 verified historic preservation rules for Ontario, California, sourced directly from the municipal code and official government pages.
Verified from official government sources
Historic-Cultural Monuments
Altering or demolishing a designated Historical Resource in Ontario, California without a Certificate of Appropriateness is a misdemeanor and an expressly declared public nuisance under Ontario Municipal Code Sec. 9-1.2680. Violators face a civil penalty equal to half the resource's assessed value for demolition, or half the restoration cost for alteration, on top of criminal prosecution.
Ontario Historic Resource Alteration Penalties
Significant RestrictionsOntario Municipal Code Sec. 9-1.2680(a),(b),(d) (Historical Preservation)
(a) Any person who violates a requirement of this Article or fails to obey an order issued by the Commission or comply with a condition of approval of any certificate or permit issued under this Article shall be guilty of a misdemeanor. (b) Any alteration or demolition of a Historical Resource in violation of this Article is expressly declared to be a nuisance and shall be abated by restoring o...
Looking for San Bernardino County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Ontario city rules.
Historic Preservation in San Bernardino County →