Costa Mesa, CA Data Centers & Crypto Mining: Data Center Noise Limits (2026)
Key Facts
- Code
- Muni Code Sec. 13-280
- Daytime limit
- 55 dB(A), 7 a.m.-11 p.m.
- Night limit
- 50 dB(A), 11 p.m.-7 a.m.
- Tonal noise
- Limits reduced five dB(A)
- Measured at
- Affected residential property
Summary
Costa Mesa caps exterior noise at 55 dB(A) from 7 a.m. to 11 p.m. and 50 dB(A) overnight, measured on the affected residential property. Municipal Code Section 13-280 sets the standard, and data-center chillers and generators are fixed noise sources bound by it.
The following noise standards, unless otherwise specifically indicated, shall apply to all residential property within the city: RESIDENTIAL EXTERIOR NOISE STANDARDS. Noise Level. Time Period. 55 dB(A). 7:00 a.m.-11:00 p.m. 50 dB(A). 11:00 p.m.-7:00 a.m.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: rev 4894290; v9 updated 2025-11-18).
Full Breakdown
Costa Mesa Municipal Code Section 13-280 sets exterior noise standards measured at any point on the affected residential property: 55 dB(A) from 7:00 a.m. to 11:00 p.m. and 50 dB(A) from 11:00 p.m. to 7:00 a.m. Each level drops five dB(A) when the noise is impact noise, simple tone noise, speech, or music. A source may exceed the standard only briefly - 30 minutes in any hour at the limit, one minute at the standard plus 15 dB(A), and never at the standard plus 20 dB(A). Section 13-278 names generators, compressors, fans, and air conditioning equipment as fixed noise sources, covering data-center cooling and backup power.
Violations & Fines
Noise exceeding the Section 13-280 standards is a Municipal Code violation enforced by Costa Mesa code enforcement through citations and administrative fines, and can breach noise conditions on a conditional use permit.
Frequently Asked Questions
How loud can a data center be in Costa Mesa?
Do Costa Mesa noise limits apply at an industrial property line?
Sources & Official References
Other rules in Costa Mesa
California rules heatmap·Compare Costa Mesa to another location·View the California data centers & crypto mining overview
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