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Nevada County, CA Data Centers & Crypto Mining: Data Center Zoning & Siting (2026)

Some Restrictions

Compiled from the official code textEditor Martyn O'NeillLast verified July 2026

Key Facts

Industrial Districts: BP, M1, M2
Data-Center Rule: None; classified industrial
Light Industrial Permit: Development Permit (all three)
Governing Code: Section 12.02.050
Jurisdiction: Unincorporated county only

Summary

Nevada County has no data-center-specific ordinance. A data center is treated as an industrial use and belongs in the BP (Business Park), M1 (Light Industrial), or M2 (Heavy Industrial) district under Section 12.02.050, needing a Development Permit and CEQA review. County zoning governs unincorporated land only.

These county ordinances apply to unincorporated areas of Nevada County. Incorporated cities within the county may have their own rules that take precedence over county-level regulations.

M1 (Light Industrial). The M1 District provides areas for the production, repairing, distribution, and warehousing of goods and equipment, along with supporting businesses and services.

Source: Nevada County Code, Title 12 (Zoning) & General Plan Noise ElementView official code

Full Breakdown

This rural Sierra county has no data centers and no ordinance naming them. Under Title 12, Section 12.02.050, a server facility is classified as an industrial use through the Similar Uses provision (Section 12.01.040.D). Table 12.02.050.D allows "light industrial including research and development, the manufacturing, production, repairing, distribution... and warehousing of a wide variety of goods" with a Development Permit in the BP, M1, and M2 districts; a more intensive facility can require a Use Permit in M2. Larger permits go to a public hearing, and any discretionary approval triggers CEQA review of power, water, and noise. Section 12.02.050 governs unincorporated areas only; Grass Valley, Nevada City, and the Town of Truckee set their own zoning.

Violations & Fines

Building a data center without the required Development or Use Permit, or in a district that bars it, is a zoning violation. The Planning Department can withhold building permits, issue stop-work orders, and pursue code enforcement until permitted.

Frequently Asked Questions

Where could a data center be built in unincorporated Nevada County?

Only in the BP, M1, or M2 industrial districts under Section 12.02.050. There is no data-center rule, so it is classified as an industrial use needing a Development Permit, or a Use Permit if intensive, plus CEQA review.

Does Nevada County have data center rules, and how can I weigh in?

No. Nevada County has no dedicated data-center ordinance; one is permitted only as a general industrial use with a Development or Use Permit and CEQA review. To advocate for tailored rules, contact the Board of Supervisors: nevadacountyca.gov/731/Board-of-Supervisors.

Does county zoning apply inside Grass Valley, Nevada City, or Truckee?

No. Title 12 governs only unincorporated Nevada County. Grass Valley, Nevada City, and the Town of Truckee each adopt and enforce their own zoning ordinances for land within their limits.

Sources & Official References

Other rules in Nevada County

Noise Ordinances: Construction HoursFew Restrictions Data Center Noise LimitsSome Restrictions Noise Ordinances: Vehicle NoiseSome Restrictions Noise Ordinances: Decibel LimitsSome Restrictions Noise Ordinances: Aircraft NoiseLight Restrictions Noise Ordinances: Amplified Music & Outdoor SoundSome Restrictions Parking Rules: Abandoned VehiclesLight Restrictions

All Nevada County rules

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