Data Centers & Crypto Mining in San Diego County, CA (2026)

2 county-level rules, plus city-specific rules for 7 cities in San Diego County, California.

Verified from official government sources

Note: These county rules apply to unincorporated areas of San Diego County. If you live within an incorporated city, that city's own rules apply: see the city list below.

Data Center Zoning & Siting

In unincorporated San Diego County, a large data center is classified as "Major Impact Services and Utilities" and needs a discretionary Major Use Permit, allowed in industrial zones such as M52, M54, and M58. The County has no data-center-specific ordinance yet.

San Diego County Data Center Zoning and Siting (Unincorporated)

Significant Restrictions

San Diego County, CA, Zoning Ordinance Sec. 2545 (M54 General Impact Industrial Use Regulations)

The following use types are permitted by the M54 Use Regulations upon issuance of a Major Use Permit. ... Major Impact Services and Utilities

Full ordinance details →Official source ↗

Data Center Noise Limits

San Diego County caps one-hour average sound at the receiving property line: 50 dB(A) daytime and 45 dB(A) at night for homes, and 70 dB(A) for M50/M52/M54 industrial property. A data center's Major Use Permit ties compliance to a required noise study.

San Diego County Data Center Noise Limits (Unincorporated)

Significant Restrictions

San Diego County, CA, Code of Regulatory Ordinances Sec. 36.404 (General Sound Level Limits)

it shall be unlawful for any person to cause or allow the creation of any noise, which exceeds the one-hour average sound level limits in Table 36.404, when the one-hour average sound level is measured at the property line of the property on which the noise is produced or at any location on a property that is receiving the noise. TABLE 36.404 SOUND LEVEL LIMITS IN DECIBELS (dBA) ZONE TIME ONE-H...

Full ordinance details →Official source ↗