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Costa Mesa, CA Building Safety: Door Locking Hardware (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

Governing section
Sec. 13-42(h)(3)
Applies to
Apartment-to-condo conversions
Door hardware
Appropriate deadbolt locks required
Egress window rule
No grille blocking bedroom escape windows
Enforcement
Building official final inspection
Records kept
5 years by planning division

Summary

When an apartment building converts to a residential common interest development in Costa Mesa, Sec. 13-42(h)(3) forces the property to meet security minimum construction standards before recordation, including deadbolt locks on every unit door and a ban on security grilles that block required bedroom egress windows.

Security requirements. The following improvements shall be provided in accordance with the provisions of the California Building Code or any successor statute or regulation. Openings into individual dwelling units shall comply with the security provisions. Doors will be equipped with appropriate deadbolt locks. Required egress windows in sleeping rooms shall not be blocked by a security grill or grate, unless it has an approved release device.

View official code

Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: rev 4894290; v9 updated 2025-11-18).

Full Breakdown

Sec. 13-42 sets minimum construction standards a project must meet before an occupied or previously occupied apartment complex can be converted and sold as a common interest development (condos). Subsection (h) requires the applicant to bring the building up to these standards, unless the building official approves an alternate method of construction, and requires applicable permits to be obtained, improvements inspected, and final city approval issued before the subdivision map records. Subsection (h)(3), 'Security requirements,' provides in accordance with the California Building Code that openings into individual dwelling units must comply with the security provisions of that code, that doors will be equipped with appropriate deadbolt locks, and that required egress windows in sleeping rooms cannot be blocked by a security grille or grate unless it has an approved quick-release device, since a locked grille over an escape window is itself a life-safety hazard.

This sits alongside the life-safety package in subsection (h)(1), which separately requires working smoke detectors, self-closing and latching doors into public corridors and stairwells, illuminated exit signage with emergency backup power, and portable fire extinguishers per the California Fire Code. The planning division reviews the property report the applicant submits documenting compliance, keeps copies as public records for at least five years, and sends copies to the California Real Estate Commissioner as required by law; the building official issues a final inspection report confirming the security and life-safety items were completed before the developer can market the converted units.

Violations & Fines

Recording a common interest development conversion, or selling units, before the Sec. 13-42(h) security and life-safety improvements including deadbolt locks are inspected and approved by the building official is prohibited under Sec. 13-40(b), and violations of the Municipal Code are enforced under Sec. 1-33 as infractions with escalating fines up to $500, or as a misdemeanor with a fine up to $1,000 and up to six months in jail.

Frequently Asked Questions

Does Costa Mesa require deadbolt locks on converted condo units?
Yes. Sec. 13-42(h)(3)(b) requires that doors be equipped with appropriate deadbolt locks as part of the minimum security construction standards before an apartment-to-condo conversion project can record its subdivision map.
Can a security grille be installed over a bedroom window in a converted unit?
Only if it has an approved release device. Sec. 13-42(h)(3)(c) bars a security grille or grate from blocking a required sleeping room egress window unless it includes an approved quick-release mechanism for emergency escape.
Who confirms the deadbolt and security requirements were installed?
The building official issues a final inspection report under Sec. 13-42(g)(7) confirming compliance with all imposed requirements, including the Sec. 13-42(h)(3) security standards, before the conversion can proceed to final city approval.

Sources & Official References

Other rules in Costa Mesa

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