Noise Ordinances in Sun Prairie, WI (2026)
7 verified noise ordinances for Sun Prairie, Wisconsin, sourced directly from the municipal code and official government pages.
Verified from official government sources
Quiet Hours
Sun Prairie sets a ten p.m. to seven a.m. quiet-hours standard: a radio, phonograph or similar device that is plainly audible at the property line during those hours is automatic evidence of a violation under Code Section 8.32.020(B).
Sun Prairie Nighttime Noise Curfew
Some RestrictionsSun Prairie Code of Ordinances § 8.32.020(B)
B.Radios—Phonographs—Similar Devices. The using, operating or permitting to be played, used or operated any radio receiving set, musical instrument, phonograph or other machine or device for the producing or reproducing of sound in a loud and unnecessary manner. The operation of any set, instrument, phonograph, machine or device between the hours of ten p.m. and seven a.m. in a manner as to be ...
Construction Hours
Construction, demolition and building repair noise in Sun Prairie is confined to seven a.m. to nine p.m. daily under Code Section 8.32.020(G), though the building inspector can permit off-hours work for extraordinary hardship.
Sun Prairie Construction Noise Hours
Some RestrictionsSun Prairie Code of Ordinances § 8.32.020(G)
G.Construction or Repair of Buildings. The erection (including excavation), demolition, alteration or repair of any building in any zoning district, as well as the operation of any pile driver, steam shovel, pneumatic hammer, derrick, steam or electric hoist, or any other similar equipment attended by loud or unusual noise, other than between the hours of seven a.m. and nine p.m. daily; provide...
Barking Dogs
Sun Prairie makes it unlawful to knowingly keep a dog that habitually barks, howls or yelps, or a cat that habitually cries or howls, to the great discomfort of the neighborhood under Code § 6.04.120. The ordinance declares such animals a public nuisance and their owners in violation.
Sun Prairie Barking Dog Nuisance Law
Some RestrictionsSun Prairie Code of Ordinances § 6.04.120
It is unlawful for any person knowingly to keep or harbor any dog which habitually barks, howls or yelps, or any cat which habitually cries or howls to the great discomfort of the peace and quiet of the neighborhood or in such manner as to materially disturb or annoy persons in the neighborhood who are of ordinary sensibilities. Such dogs and cats are considered to be a public nuisance and thei...
Leaf Blower Rules
Lawnmowers, leaf blowers and other powered garden equipment in Sun Prairie must stay within seven a.m. to nine p.m. under Code Section 8.32.020(H), unless the equipment meets specified noise levels at the property line.
Sun Prairie Leaf Blower and Lawn Equipment Hours
Some RestrictionsSun Prairie Code of Ordinances § 8.32.020(H)
H.Operation of Certain Equipment. Lawnmowers, chainsaws, powered garden equipment, electric insect killing/repelling devices, and other nonconstruction maintenance equipment shall be operated only during the hours between seven a.m. and nine p.m. unless within the specified noise levels measured at the property line of the location at which such equipment is in use.
Amplified Music & Outdoor Sound
Using a loudspeaker or amplifier on Sun Prairie streets or in its parks requires a police chief permit under Code Section 8.32.040, and commercial advertising by loudspeaker on public streets is banned outright under Section 8.32.020(C).
Sun Prairie Amplified Sound Rules
Significant RestrictionsSun Prairie Code of Ordinances § 8.32.020(C)
C.Loudspeakers—Amplifiers for Advertising. The using, operating or permitting to be played, used or operated of any radio receiving set, musical instrument, phonograph, loudspeaker, sound amplifier or other machine or device for the producing or reproducing of sound which is cast upon the public streets for the purpose of commercial advertising or attracting attention of the public to any build...
Decibel Limits
Sun Prairie caps stationary noise at the property line: 65 decibels by day and 50 at night in residential zones, 70 decibels around the clock in commercial zones, and 75 decibels in every other zoning district. A violator in a residential zone must be ordered to cut the noise immediately by the city's monitoring officer under Code § 8.32.030.
Sun Prairie Noise Decibel Limits by Zone
Some RestrictionsSun Prairie Code of Ordinances § 8.32.030(A)(1)
A.Maximum Permissible Sound Levels.1.Noise from a stationary source shall not exceed the following standards for maximum sound pressure levels measured at the property line. Zone Noise Rating Daytime Noise Rating Nighttime Residential 65 db 50 db Commercial 70 db 70 db All Other Zoning Districts 75 db 75 db
Vehicle Noise
Sun Prairie bans engaged compression (Jake) brakes citywide, caps horn use at three seconds, and requires every vehicle exhaust to run through a muffler that prevents loud or explosive noise, under Code Sections 8.32.020 and 10.08.180.
Sun Prairie Vehicle Noise and Compression Brake Rules
Significant RestrictionsSun Prairie Code of Ordinances § 8.32.020(A), (F)
A.Horns—Signaling Devices. The sounding of any horn or signaling device on any automobile, motorcycle or other vehicle on any street or public place in the city for longer than three seconds in any period of one minute or less, except as a danger warning; the creation of any unreasonable loud or harsh sound by means of any signaling device and the sounding of any plainly audible device for an u...
Looking for Dane County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Sun Prairie city rules.
Noise Ordinances in Dane County →