Noise Ordinances in San Marcos, CA (2026)
7 verified noise ordinances for San Marcos, California, sourced directly from the municipal code and official government pages.
Verified from official government sources
Quiet Hours
San Marcos Municipal Code § 10.24.020(b)(10) bars 'Late Night Disturbances' that are plainly audible in a neighboring residence, or 50 feet away, between 10:00 p.m. and 7:00 a.m. on weeknights and between 11:00 p.m. and 7:00 a.m. on weekends. Meeting that audibility threshold alone is prima facie evidence of a violation under Chapter 10.24.
San Marcos Nighttime Quiet Hours Rule
Some RestrictionsSan Marcos Municipal Code § 10.24.020(b)(10)
(10)Late Night Disturbances that are plainly audible by inhabitants or occupants of any adjacent or neighboring residential properties or units, or are plainly audible at a distance of 50 feet, that occur on week days, Monday through Friday, between the hours of 10:00 p.m. and 7:00 a.m. the following day, and/or on weekends, Saturday through Sunday, between the hours of 11:00 p.m. and 7:00 a.m....
Construction Hours
San Marcos Municipal Code § 10.24.020(b)(9) confines building erection or demolition, grading, blasting, and heavy equipment like dump trucks, graders and jack hammers to Monday-Friday 7:00 a.m.-6:00 p.m. and Saturday 8:00 a.m.-5:00 p.m. No exempted construction noise is permitted on Sundays, though the City Manager can waive the limits for urgent necessity or a permitted project.
San Marcos Construction Noise Hours
Some RestrictionsSan Marcos Municipal Code § 10.24.020(b)(9)
(9)Erection or demolition of buildings, excluding owner resident additions or remodeling, and the grading and excavation of land including the use of blasting, the start up and use of heavy equipment such as dump trucks and graders and the use of jack hammers except on week days Monday through Friday between the hours of 7:00 a.m. and 6:00 p.m. and on Saturdays 8:00 a.m. to 5:00 p.m. The City M...
Barking Dogs
San Marcos Municipal Code § 10.24.020(b)(6) makes frequent, long, continued barking or animal noise a prima facie noise violation once it is plainly audible in a neighboring residence, or 50 feet from a non-residential building. The presumption applies to any kept animal or bird; only occasional noise from a legally run kennel, animal hospital, humane society or pound is exempt.
San Marcos Barking Dog Noise Rule
Some RestrictionsSan Marcos Municipal Code § 10.24.020(b)(6)
(6)Animals or birds. The keeping of animals or birds which, by causing frequent or long, continued noise plainly audible by inhabitants or occupants of any adjacent or neighboring residential properties or units, or plainly audible at a distance of 50 feet from any non-residential building or structure, shall be presumed to disturb the comfort or repose of any person or persons in the vicinity ...
Amplified Music & Outdoor Sound
San Marcos treats loud stereos, radios, musical instruments and other sound-reproducing equipment as prohibited noise under Municipal Code § 10.24.020(b)(3) whenever they disturb neighbors. Playing such devices between 10:00 p.m. and 7:00 a.m. loud enough to be plainly audible in an adjacent residence, or 50 feet from a commercial building, is automatically treated as a violation.
San Marcos Amplified Sound and Stereo Limits
Some RestrictionsSan Marcos Municipal Code § 10.24.020(b)(3)
(3)Stereos, TVs, Radios and Phonographs. The using, operating or playing, or the permitting to be played, used or operated, any stereo, radio receiving set, musical instrument, phonograph, television set or any like machine or device that produces or reproduces sound, in such manner as to disturb at any time, the peace, quiet and comfort of the neighboring inhabitants, with louder volume than i...
Aircraft Noise
Any aircraft using a San Marcos city airport for training flights or a permanent base must meet a hard noise ceiling under SMMC 13.04.380 and 13.04.390: no more than 90 decibels EPNL measured 1,500 feet from the runway centerline, on top of general FAA-compatible noise abatement procedures required of every pilot.
San Marcos Airport Training Flight Noise Limit
Some RestrictionsSan Marcos Municipal Code §§ 13.04.370, 13.04.380
13.04.370 - Noise abatement procedures. All persons operating aircraft from City airports shall comply with all noise abatement procedures, traffic patterns and policies as may be established by City and acceptable to FAA. 13.04.380 - Training flight restrictions. Only those aircraft that on takeoff or landing cause an effective perceived noise level (EPNL) not greater than 90 decibels (DB) at ...
Decibel Limits
San Marcos caps exterior noise at fixed decibel levels that vary by zone and time of day under Municipal Code Section 10.24.010 and Zoning Ordinance Section 20.300.070(E). Single-family residential properties may not exceed 60 dBA in daytime and 50 dBA overnight, while commercial and industrial zones tolerate higher levels, and interior noise inside any dwelling is capped at 45 dBA at any hour.
San Marcos Noise Decibel Limits by Zone
Some RestrictionsSan Marcos Municipal Code § 10.24.010; Zoning Ordinance § 20.300.070(E), Table 20.300-4
No person shall make, cause to be made, or continue to make or cause to be made, within the City limits of the City of San Marcos, any loud, annoying or unnecessary noise that injures, impairs or endangers the health, peace or safety of any person of reasonable sensibilities, or that disturbs the peace, quiet, comfort or tranquility of the neighborhood or community, or exceeds the noise limits ...
Vehicle Noise
San Marcos names unnecessary horn use and loud motor vehicle noise as violations of its noise ordinance under Municipal Code Section 10.24.020(b)(1)-(2), covering tire screech, unnecessary engine racing, backfiring, and excess muffler or exhaust noise. A violation is an infraction under Section 10.24.050, enforced by an officer's direct hearing and sight of the source.
San Marcos Vehicle Horn & Muffler Noise Rules
Some RestrictionsSan Marcos Municipal Code § 10.24.020(b)(1)-(2)
(1)Horns and other signaling devices. The sounding of any horn or signaling device on any automobile, motor vehicle or any other vehicle on any street or public street except as a danger warning; the creation by means of any such signaling device of any unreasonably and unnecessarily loud or harsh sounds; the sounding of any such signaling device for an unnecessarily or unreasonably long period...
Looking for San Diego County county-wide rules?
County ordinances apply to unincorporated areas and may supplement San Marcos city rules.
Noise Ordinances in San Diego County →