Petaluma, CA Building Safety: Door Locking Hardware (2026)

085(B)(3) of the Petaluma Municipal Code sets specific hardware requirements for exterior doors on buildings used for human habitation: doors must fit securely in their frames and be substantially weather tight with operable locks, each exterior door must have a deadbolt lock that can be operated from the inside without needing a key or special knowledge, and every deadbolt must have a minimum throw of one inch. Screen doors used for insect control must have a working self-closing device. The inside-operable requirement is deliberate: it lets an occupant exit quickly in an emergency without hunting for a key, while the one-inch throw sets a real security minimum rather than leaving it to a landlord's discretion.

The same section addresses windows in subsection B(4), requiring operable windows within twelve feet of a walking surface below to have a sash locking device that likewise works from the inside without a key, and interior doors in subsection J(3), which bars interior door locks from requiring a key or special knowledge and requires firewall doors to be self-closing and self-latching. Together these provisions form Petaluma's local hardware floor for residential security and egress, layered on top of, not replacing, the state building and fire code requirements adopted in Title 17 of the same code.