Noise Ordinances in Delaware (2026)
25 rules on the books across Delaware, 3 cities and counties. Select a rule to read the full details.
Severity: Few Restrictions · Light Restrictions · Some Restrictions · Significant Restrictions · Heavy Restrictions
Quiet Hours
Nighttime and early morning noise restrictions. Most cities set specific hours when loud activities like lawn mowing, parties, and power tools are not allowed.
Kent County
Some RestrictionsKent County bans yelling, shouting, hooting, whistling or otherwise creating a racket on public streets between 11:00…
Read full rule →New Castle County
Some RestrictionsRadios, TVs, stereos and similar sound devices can't be run loud enough to carry across a property line or through…
Read full rule →Wilmington
Some RestrictionsWilmington bans yelling, shouting, whistling, or racket on public streets between 10 p.m. and 8 a.m., backed by…
Read full rule →Construction Hours
When construction, demolition, and heavy equipment may run in residential areas. Most cities regulate this by hours and days rather than volume; violations can bring stop-work orders and fines.
Kent County
Some RestrictionsKent County bars noisy construction, repair or demolition equipment between 11 p.m. and 7 a.m. under its general noise…
Read full rule →New Castle County
Some RestrictionsNew Castle County bars construction equipment noise between 9 p.m. and 7 a.m. on weekdays, 10 p.m. Friday/Saturday to 9…
Read full rule →Wilmington
Some RestrictionsWilmington bans noisy construction work outside set hours: 7 a.m.-10 p.m. weekdays in business/industrial districts and…
Read full rule →Barking Dogs
Rules about excessive or continuous dog barking, including how complaints are filed, time-of-day limits, and penalties for owners.
Delaware: statewide
StatewideSome RestrictionsDelaware prohibits dogs from causing a noise disturbance under 16 Del. C. Section 3057F. Barking, howling, or whining…
Read full rule →Kent County
Some RestrictionsKent County treats a barking or howling animal as an illegal noise disturbance once it barks continuously for 10…
Read full rule →New Castle County
Some RestrictionsNew Castle County can declare a chronically barking dog a 'public nuisance animal'; animal control may impound it, and…
Read full rule →Wilmington
Some RestrictionsWilmington bans owning or keeping an animal or bird that barks, bays, cries or squawks continuously for ten minutes or…
Read full rule →Leaf Blower Rules
Restrictions on leaf blowers, including permitted hours, decibel caps, and the growing set of cities phasing out or banning gas-powered blowers outright.
Kent County
Some RestrictionsKent County does not single out leaf blowers by name, but its noise ordinance bars power saws, sanders, drills…
Read full rule →New Castle County
Some RestrictionsNew Castle County bars outdoor power equipment, including leaf blowers and garden tools, from creating noise…
Read full rule →Amplified Music & Outdoor Sound
Rules for loudspeakers, live bands, DJ equipment, and outdoor music at homes, venues, and events, decibel limits, permitted hours, and when an amplified-sound permit is required.
Wilmington
Significant RestrictionsWilmington bans exterior loudspeakers and amplified music plainly audible beyond your property line, allowing outdoor…
Read full rule →Kent County
Some RestrictionsKent County bars radios, TVs, phonographs, musical instruments and speakers from causing a noise disturbance, and…
Read full rule →New Castle County
Some RestrictionsNew Castle County outlaws loudspeakers, musical instruments, and other amplified sound between 9 p.m. and 8 a.m. if the…
Read full rule →Aircraft Noise
Local regulations related to noise from airports, flight paths, and helicopter operations near residential areas.
Delaware: statewide
StatewideFew RestrictionsAircraft operations and noise standards in Delaware are governed by federal law under the FAA, which preempts state and…
Read full rule →Kent County
Few RestrictionsKent County does not set its own aircraft decibel limits: § 161-2B(1)(c) requires all aircraft and railroads operating…
Read full rule →New Castle County
Few RestrictionsNew Castle County's noise ordinance covers aircraft in one line: aircraft and railroads only have to comply with…
Read full rule →Wilmington
Few RestrictionsWilmington's noise ordinance carves aircraft and railroad noise out of its citywide decibel limits, requiring only…
Read full rule →Decibel Limits
The decibel thresholds cities enforce, usually as a table by zone and time of day, residential, commercial, and industrial limits, how noise is measured, and what happens at the property line.
Kent County
Some RestrictionsKent County sets numeric noise limits keyed to ambient sound rather than a flat decibel cap. A sound that exceeds the…
Read full rule →New Castle County
Some RestrictionsNew Castle County caps noise from stationary sources like industrial and commercial equipment at 10 dBA above ambient…
Read full rule →Wilmington
Some RestrictionsWilmington caps continuous industrial-district noise at 85 dBA measured at the receiving property's boundary, while…
Read full rule →Vehicle Noise
Rules about loud vehicle exhaust, modified mufflers, racing engines, and stereos audible at distance. Covers what officers measure and typical fines.
Kent County
Some RestrictionsKent County bars repairing, rebuilding, testing, racing or 'gunning' a motor vehicle in a residential district between…
Read full rule →New Castle County
Some RestrictionsNew Castle County bans car stereos audible 50 feet or more from the vehicle and bans revving, racing, or repairing…
Read full rule →Wilmington
Some RestrictionsCar stereos, radios, and high-fidelity equipment in vehicles can't be plainly audible more than 50 feet away on…
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