Lassen County has no ordinance specific to cryptocurrency or blockchain mining. A commercial mine is treated like any data center - allowed in an M-L, M-1, M-2, or M industrial district, subject to the county noise ordinance (Chapter 9.65) and CEQA.
Unincorporated Lassen County does not name cryptocurrency, bitcoin, or blockchain mining anywhere in its Zoning Code. Because a mine is a room of servers and cooling gear, it is regulated the same as a data center: classified by the planning director as an industrial use under Chapter 18.42, sited in the M-L, M-1, M-2, or M district, and requiring a building permit, plus a use permit and CEQA review for a larger facility. Continuous noise from rigs and cooling must stay within Chapter 9.65 limits - and at the nearest home cannot exceed 55 dBA overnight. Small-scale hobby mining inside a residence falls under ordinary residential and home-occupation rules, not industrial zoning.
No crypto-specific penalty exists. A commercial mine built outside an industrial district, without a required building or use permit, or exceeding the Chapter 9.65 noise limits, faces county zoning, permit, and administrative-citation enforcement until it conforms.
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