Noise from Specific Sources in Wilmington, DE (2026)
6 verified noise from specific sources rules for Wilmington, Delaware, sourced directly from the municipal code and official government pages.
Verified from official government sources
HVAC & Mechanical Noise
Wilmington caps stationary noise sources like HVAC condensers and heat pumps at fixed decibel levels, 55 dBA at night and 65 dBA by day in residential zones, enforced by Licenses and Inspections.
Wilmington HVAC Equipment Noise Limits
Some RestrictionsWilmington City Code § 11-65
(5)No persons shall operate or cause to be operated any stationary source of sound in such a manner as to create a 24-hour equivalent A-weighted sound level which exceeds the leq limits set forth for the receiving land use category...: a.Residence districts: 65 dBA between the hours of 7:00 a.m. and 8:00 p.m., 55 dBA between the hours of 8:00 p.m. and 7:00 a.m. b.Business districts: 75 dBA betw...
Bar & Nightclub Noise
Wilmington caps nightlife noise at 65 dBA overnight and 75 dBA daytime in business districts, measured at the property line of neighboring receivers, with police and licensing enforcement.
Wilmington Bar and Nightclub Noise Limits
Some RestrictionsWilmington City Code § 11-65(b)(5)b
No persons shall operate or cause to be operated any stationary source of sound in such a manner as to create a 24-hour equivalent A-weighted sound level which exceeds the leq limits set forth for the receiving land use category below and measured at the point of complaint origination within the property boundary of the receiving land use:a.Residence districts: 65 dBA between the hours of 7:00 ...
Car Alarm Limits
Wilmington limits car alarms and other vehicle horns to genuine emergency use only, folding them into the citywide noise ordinance enforced by police under City Code § 11-60.
Wilmington Car Alarm Noise Rules
Some RestrictionsWilmington City Code § 11-60(c)(1)
Horns and signaling devices. The use of motor vehicle horns and warning or signaling devices shall be limited to the emergency situations for which they are designed.
Generator Noise
Wilmington treats a running generator as a stationary noise source, capping it at 65 dBA by day and 55 dBA at night in residential districts under the city noise code.
Wilmington Generator & Stationary Noise Limits
Some RestrictionsWilmington City Code § 11-65(b)(5)
(5)No persons shall operate or cause to be operated any stationary source of sound in such a manner as to create a 24-hour equivalent A-weighted sound level which exceeds the leq limits set forth for the receiving land use category below...a.Residence districts: 65 dBA between the hours of 7:00 a.m. and 8:00 p.m., 55 dBA between the hours of 8:00 p.m. and 7:00 a.m.
Delivery Truck Noise
Wilmington prohibits loading, unloading or handling boxes, crates, containers and cans between 10 p.m. and 7 a.m. in residence districts if the racket creates a noise disturbance.
Wilmington Bans Late-Night Delivery Noise
Some RestrictionsWilmington City Code § 11-60(c)(6)
Loading operations. Loading, unloading, opening or otherwise handling boxes, crates, containers, garbage cans, or other similar objects between the hours of 10:00 p.m. and 7:00 a.m. the following day, in such a manner as to create a noise disturbance within a residence district, except during an emergency.
Low-Frequency Bass Limits
Wilmington limits low-frequency infrasound below 16 hertz to 100 dBA measured at the complaining property, a specific standard aimed at deep bass and subwoofer noise that carries through walls and across yards where ordinary A-weighted limits don't fit.
Wilmington Caps Infrasound Bass Noise at 100 dBA
Some RestrictionsWilmington City Code § 11-65(b)(4)
Any source of sound which emits infrasound (below 16 hertz) or ultrasound (above 20 KHz) frequencies shall not exceed 100 dBA when measured at the point of complaint origination within the receiving property.
Looking for New Castle County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Wilmington city rules.
Noise from Specific Sources in New Castle County →