Hayward, CA Noise from Specific Sources: Low-Frequency Bass Limits (2026)
Key Facts
- Governing section
- HMC Sec. 4-1.03.2
- Meter required
- no, decibel meter not required
- Key criterion
- pitch or frequency of the noise
- First offense
- written warning only
- Second complaint window
- 72 hours for citation
- Enforcing officer
- City Manager or designee
Summary
Hayward lets code officers cite a bass-heavy stereo or subwoofer even without a decibel reading. Section 4-1.03.2 creates a separate, independent violation standard for noise a sound meter would not fairly capture, and lists the pitch or frequency, meaning vibrating sound waves, of the noise as one of the criteria an officer or judge can weigh.
This section contains a separate and independent method of determining whether a violation of the noise regulations has occurred. No person shall willfully or negligently make, produce or allow to be produced, at any time, any unreasonable noise. Enforcement of this section shall not require the use of a sound level meter. (a)A violation of this section shall be proven by reference to one (1) or more of the following criteria:1.The volume or loudness of the noise (based on the distance away from the source at which the noise can be clearly heard);2.The pitch or frequency (i.e., vibrating sound waves) of the noise;...10.The proximity of the noise to residential sleeping facilities;...15.The time of the day or night the noise occurs (indicating the relationship of the noise to the normal activities that occur at a given time);...
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Municipal Code: Supplement 28 Update 1 | Charter: Supplement 1).
Full Breakdown
1, this provision does not require the Enforcement Officer, the City Manager or a designee, to bring out a sound level meter. It exists specifically to reach noise, like heavy low-end bass from a car audio system, a house party subwoofer or a commercial sound system, that can be disturbing at low volume readings because of its frequency rather than its raw decibel level. Seventeen criteria can support a citation, including the pitch or frequency of the noise, its proximity to residential sleeping facilities, the time of day or night it occurs, whether it is recurrent or constant, and the number of persons affected.
Enforcement follows a two-step process: on a first complaint the Enforcement Officer may issue only a written warning to whoever controls the property or the activity. If a second complaint about the same location arrives within seventy-two hours, the Enforcement Officer can require complaining neighbors, at least two from different addresses, to sign statements and commit to testify, and only then may a citation issue. 10.
Violations & Fines
A first bass-noise complaint draws a written warning, not a fine. A second complaint about the same address within 72 hours, backed by signed statements from two complainants at different addresses, lets the Enforcement Officer issue a citation. Fines follow the administrative penalty schedule in Chapter 1, Article 7; recipients can request a hearing under Sections 1-7.07 through 1-7.10, with judicial review available under Section 1-7.13.
Frequently Asked Questions
Can Hayward cite me for bass noise even if it's not that loud on a decibel meter?
What happens after I get a written warning for loud bass in Hayward?
Does the bass-noise rule apply to car stereos too?
Sources & Official References
Other rules in Hayward
California rules heatmap·Compare Hayward to another location·View the California noise from specific sources overview
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