Noise Ordinances in Jefferson County, CO (2026)

Jefferson County Noise Abatement Policy, Part 3, Ch. 1, Sec. 1, B.1, D.3, D.4, F.1-F.2

B.1. No person shall operate any type of vehicle, machine, or device, or carry on any activity, or promote or facilitate the carrying on of any activity which makes sound in excess of the level specified in the Permissive Noise Levels Section. ... D.3. Sound from a non-vehicular source located in a residential zone, shall not exceed the following limits: 7:00 A.M. until 7:00 P.M.: 55 dB(A); 7:0...

Jefferson County Noise Abatement Policy, Part 3, Ch. 1, Sec. 1, D.5, F.1-F.2

D.5. Construction projects in residential zones shall be subject to the following permissible noise levels for the period within which construction is to be completed pursuant to any applicable construction permit issued by proper authority, or if no time limitation is imposed, then for a reasonable period of time for completion of project. 7:00 A.M. until 7:00 P.M.: 80 dB(A). 7:00 P.M. until 7...

Jefferson County Policy Manual, Part 3, Ch. 1, Sec. 1 (Noise Abatement), Sections B.2.i and F, adopted by Resolution CC07-202

B. Excessive Sound Levels Prohibited. 1. No person shall operate any type of vehicle, machine, or device, or carry on any activity, or promote or facilitate the carrying on of any activity which makes sound in excess of the level specified in the Permissive Noise Levels Section. 2. Exceptions apply to: ... i. The sound made by animals. ... F. Violations, Penalty. 1. Any person who violates any ...

Jefferson County Noise Abatement Policy, Part 3, Ch. 1, Sec. 1, B.1

No person shall operate any type of vehicle, machine, or device, or carry on any activity, or promote or facilitate the carrying on of any activity which makes sound in excess of the level specified in the Permissive Noise Levels Section. 2. Exceptions apply to: a. The use of property for purposes of conducting speed or endurance events invol...

Jefferson County Noise Abatement Policy, Part 3, Ch. 1, Sec. 1, B.1, D.3-D.4

B. Excessive Sound Levels Prohibited. 1. No person shall operate any type of vehicle, machine, or device, or carry on any activity, or promote or facilitate the carrying on of any activity which makes sound in excess of the level specified in the Permissive Noise Levels Section. ... D.3. Sound from a non-vehicular source located in a residential zone, shall not exceed the following limits: 7:00...

CRS 25-12-103(4)

This article is not intended to apply to the operation of aircraft or to other activities which are subject to federal law with respect to noise control.

C.R.S. § 25-12-103(1)-(3)

(1) Every activity to which this article is applicable shall be conducted in a manner so that any noise produced is not objectionable due to intermittence, beat frequency, or shrillness. Sound levels of noise radiating from a property line at a distance of twenty-five feet or more therefrom in excess of the db(A) established for the following time periods and zones shall constitute prima facie ...

Jefferson County Noise Abatement Policy, Part 3, Ch. 1, Sec. 1, E.1-E.3, F.1-F.2

E. Vehicle Muffler Required. 1. No person shall operate anywhere in unincorporated Jefferson County any vehicle that is not equipped with a muffler in constant operation. 2. No person shall operate any vehicle on which a muffler is not properly maintained to prevent any noise in excess of the noise emitted when the muffler was originally installed by the manufacturer of the vehicle. 3. Muffler ...