Dublin, CA Building Safety: Door Locking Hardware (2026)
Key Facts
- Governing section
- DMC Sec. 7.32.280, Appendix Ch. 10
- Deadbolt throw
- Minimum 1-inch projection
- Cylinder
- Minimum 5 pin tumblers, cylinder guard
- Astragal (double doors)
- Steel, minimum .125 inch thick
- Aluminum frame jamb
- Must resist 1,600 lbs of pressure
- Window glazing
- Burglary-resistant if pane over 96 sq in
Summary
Dublin's building security appendix sets exact hardware specifications for exterior doors: swinging doors need a deadbolt with at least a 1-inch throw and five-pin cylinder, double doors need steel astragals and flush bolts, and sliding patio doors and accessible windows have their own locking and glazing standards.
(1) Swinging exterior wood and steel doors shall be equipped as follows: (a) A single or double door shall be equipped with a double- or single-cylinder deadbolt. The bolt shall have a minimum projection of one (1) inch and be constructed so as to repel cutting tool attack. The deadbolt shall have an embedment of at least three-fourths (3/4) inch into the strike receiving the projected bolt. The cylinder shall have a cylinder guard, a minimum of five pin tumblers and shall be connected to the inner portion of the lock by connecting screws of at least one-fourth (1/4) inch in diameter. ... (c) For the purpose of this section, doors leading from garage areas into a dwelling are exterior doors.
Official source re-checked September 8, 2026: no newer edition of the code had been published (publisher’s edition: current through Ordinance 2-26, passed March 3, 2026).
Full Breakdown
Dublin Municipal Code Sec. 34 Residential Code standards). Under subsection (B)(1)(a), swinging exterior wood and steel doors must have a single- or double-cylinder deadbolt with a bolt projection of at least 1 inch, built to resist cutting-tool attack, with at least 3/4-inch embedment into the strike, a cylinder guard, a minimum of five pin tumblers, and connecting screws at least 1/4 inch in diameter; garage-to-dwelling doors count as exterior doors for this rule. 125 inch thick covering the gap between the doors, welded or bolted with non-removable fasteners (subsection (B)(2)).
Aluminum-frame swinging doors need jambs able to withstand 1,600 pounds of pressure near the strike, with a comparable deadbolt or dog-bolt (subsection (B)(3)). Sliding patio glass doors must have a lock bolt that resists disengagement by manipulating the door, and doors accessible from grade need either an interior-mounted moving panel or an approved secondary lock (subsection (B)(5)(b),(c)). Accessible windows within 12 feet of the ground with panes over 96 square inches and a minimum dimension over 6 inches need burglary-resistant glazing or an equivalent approved method, unless visible from a public or private thoroughfare (subsection (B)(7)).
Violations & Fines
Constructing or altering a building without the required security hardware is enforced as a building code violation under Sec. 1.04.030: a misdemeanor with up to a $1,000 fine and six months in jail, or, at the city's discretion, an infraction. The Building Official can withhold final inspection approval under Sec. 7.28.590 until the required hardware is installed and verified.
Frequently Asked Questions
What kind of deadbolt does Dublin require on exterior doors?
Does Dublin's door security code apply to garage entry doors?
What secures double exterior doors in Dublin?
Do sliding glass patio doors need a special lock?
Sources & Official References
Other rules in Dublin
California rules heatmap·Compare Dublin to another location·View the California building safety overview
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