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

2 county-level rules, plus city-specific rules for 8 cities in Orange County, California.

Verified from official government sources

Note: These county rules apply to unincorporated areas of Orange 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 Orange County, data centers are not a listed use in the M1 "Light Industrial" district, so they can proceed only with a discretionary Use Permit approved by the Planning Commission. Most county land is incorporated, so eligible unincorporated sites are scarce.

Orange County Data Center Zoning and Siting (Unincorporated)

Some Restrictions

Orange County, CA, Comprehensive Zoning Code Table 7-9-34.2 (M1 Light Industrial District)

All other uses shall be prohibited unless a Use Permit by the Planning Commission is obtained ... Required finding: The proposed use is consistent with the purpose and intent of this district.

Full ordinance details →Official source ↗

Data Center Noise Limits

Unincorporated Orange County has no data-center-specific noise rule, but its Noise Control Ordinance caps exterior noise reaching any residential property at 55 dB(A) daytime (7 a.m.-10 p.m.) and 50 dB(A) at night (10 p.m.-7 a.m.). Cooling equipment and generators must meet these limits.

Orange County Data Center Noise Limits (Unincorporated)

Some Restrictions

Orange County, CA, Codified Ordinances Div. 6, Sec. 4-6-5 (Exterior Noise Standards)

The following noise standards, unless otherwise specifically indicated, shall apply to all residential property within a designated noise zone: ... 55 dB(A) 7:00 a.m.--10:00 p.m. ... 50 dB(A) 10:00 p.m.-- 7:00 a.m.

Full ordinance details →Official source ↗