Unreinforced Masonry: Altadena vs El Monte
How do unreinforced masonry rules compare between Altadena, CA and El Monte, CA?
Altadena, CA
Los Angeles County
No data available yet for Altadena.
El Monte, CA
Los Angeles County
Under California's 1986 URM Law (Gov. Code Sections 8875-8875.10), every local government in Seismic Zone 4 — which includes El Monte — was required to inventory unreinforced masonry buildings and adopt a mitigation program. El Monte completed its URM inventory but does not have an active mandatory retrofit ordinance.
View full El Monte rules →Key Facts Comparison
| Fact | Altadena | El Monte |
|---|---|---|
| Governing Statute | - | CA Gov. Code §§ 8875-8875.10 |
| El Monte Program Type | - | Inventory + voluntary mitigation |
| Seismic Zone | - | Zone 4 (highest) |
| Retrofit Standard | - | CEBC Appendix A1 |
Highlighted rows indicate differences between cities.
Altadena FAQ
No FAQs available.
El Monte FAQ
Does El Monte require URM retrofit?
No. The city completed its 1986 URM Law inventory but adopted a voluntary mitigation approach. Owners are notified but not compelled to retrofit by a deadline.
How do I know if my building is unreinforced masonry?
Buildings of brick or block construction built before 1933 without reinforcing steel are typical URMs. Contact the El Monte Building Division for the URM list status of a specific property.
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