Troy, MI Building Safety: Door Locking Hardware (2026)
Key Facts
- Minimum deadbolt throw
- 1 inch
- Sliding bolts
- not an acceptable deadbolt
- Window lock zone
- within 6 feet of grade
- Basement hatchways
- must secure against unauthorized entry
- Enforcement
- municipal civil infraction, Chapter 100
Summary
Troy's Property Maintenance Code requires every door into a rented dwelling, rooming or housekeeping unit to carry a deadbolt with a throw of at least 1 inch, openable from inside without a key. A sliding bolt does not count. Windows near grade and basement hatchways serving rented units need their own locking hardware.
304.18 Building security. Doors, windows or hatchways for dwelling units, room units or housekeeping units shall be provided with devices designed to provide security for the occupants and property within. 304.18.1 Doors. Doors providing access to a dwelling unit, rooming unit or housekeeping unit that is rented, leased or let shall be equipped with a deadbolt lock designed to be readily openable from the side from which egress is to be made without the need for keys, special knowledge or effort and shall have a lock throw of not less than 1 inch. Such deadbolt locks shall be installed according to the manufacturer's specifications and maintained in good working order. For the purpose of this section, a sliding bolt shall not be considered an acceptable deadbolt lock.
Full Breakdown
18 of Chapter 82 (Property Maintenance Code) makes building security a maintained condition: doors, windows and hatchways for dwelling, rooming or housekeeping units must carry devices designed to secure occupants and property. 1 sets the operative standard for rental doors: any door providing access to a unit that is rented, leased or let must have a deadbolt that opens from the egress side without a key, special knowledge or effort, with a throw of not less than 1 inch, installed to the manufacturer's specifications and kept in good working order.
The Code expressly disqualifies a sliding bolt as an acceptable deadbolt. 3 requires basement hatchways serving a rented unit to be equipped with devices that secure the unit from unauthorized entry. 15, which requires locks at every dwelling and sleeping-unit entrance to tightly secure the door. 1, treating noncompliance as an unlawful act prosecuted as a municipal civil infraction under Chapter 100.
Violations & Fines
A landlord who rents a unit without a compliant deadbolt, window lock or hatchway device violates Section 304.18 and can be issued a Municipal Civil Infraction Notice or Citation under Sections 106.1 and 107.1. Each day a cited violation continues after notice is a separate offense under Section 106.2, with fines and costs set under Chapter 100. Owners who transfer a noncompliant unit without disclosing an open violation notice also risk liability under Section 107.3.
Frequently Asked Questions
Does Troy require deadbolts on rental unit doors?
Can a landlord use a sliding bolt instead of a deadbolt?
What happens if a rental door lock does not meet the standard?
Sources & Official References
Other rules in Troy
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