Wilmington, DE Fire Regulations: Smoke Detectors (2026)
Key Facts
- Minimum devices
- 1 per unit; 2 if 3+ stories
- Battery units
- Allowed only pre-1983 construction
- Audible signal
- Minimum 85-decibel rating
- Enforcement
- Licenses & Inspections, fire marshal
- Tampering
- Unlawful to disable or remove
Summary
Every dwelling in Wilmington must have working smoke detectors, with the number scaled to building height and unit count, and tampering with a unit is a separate offense.
(a)Installation required.(1)Dwellings. All structures and dwellings shall be equipped with smoke detectors and fire protection equipment as required by the provisions of chapter 4 and the city's building code. ... (d)Number of devices required. A minimum of one device shall be required in one-story and two-story single-family dwelling units. Dwelling units consisting of three or more stories shall be equipped with a minimum of two devices. Buildings containing two or more dwelling units shall be equipped with a minimum of one device for each individual dwelling unit.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 72).
Full Breakdown
City Code § 34-232 requires all structures and dwellings to carry smoke detectors and fire protection equipment under Chapter 4 and the building code. One-story and two-story single-family homes need at least one detector; homes of three or more stories need at least two; multi-unit buildings need at least one per dwelling unit, plus an added unit near basement stairs. Battery units are allowed only in structures built before 1983 or not substantially renovated since. Detectors must sound at a minimum of 85 decibels. Licenses & Inspections and the fire marshal share enforcement, and rental units get inspected on that basis.
Violations & Fines
Failing to install a required detector, or tampering with, damaging, or disabling one (including pulling batteries), is unlawful under § 34-232(a)(2) and is enforced by Licenses & Inspections and the fire marshal.
Frequently Asked Questions
Can I use a battery-powered smoke detector in Wilmington?
How many smoke detectors does my Wilmington rowhome need?
Sources & Official References
Other rules in Wilmington
Compare Wilmington to another location·View the Delaware fire regulations overview
See something wrong?
Help us keep this page accurate. If you notice an error or outdated information, let us know.