Modoc County, CA Home Business: Zoning Restrictions (2026)

Modoc County's zoning code (Title 18) treats a home-based business as a 'home occupation,' an accessory use of a dwelling. Section 18.06.510 defines a home occupation as an accessory use of a dwelling unit or accessory building on the same lot for gainful employment involving the manufacture, provision, or sale of goods or services, conducted entirely within the dwelling or accessory building so that no outdoor storage or activity takes place, no persons other than the inhabitants are employed, and no advertising occurs except one small nameplate. The code creates two tiers. A 'limited home occupation' is permitted as an accessory use with a dwelling under Section 18.100.010(D)(5) without a use permit, provided it meets the listed criteria: the work is conducted inside the dwelling or an accessory building; only inhabitants of the principal dwelling are employed; the building's residential appearance is not altered; no noise over 55 decibels at the lot line, and no detectable vibration, glare, fumes, odors, dust, or electrical interference at the property boundary; and no increase in utility use beyond a typical residence. A larger or more intensive 'home occupation' (one that involves more clients, group classes, or otherwise exceeds the limited criteria) may be permitted with a use permit under Section 18.100.030(D), reviewed by the Planning Commission. The Planning Department in Alturas administers these provisions. There is no general countywide business-license tax, but the zoning standards must be satisfied wherever the business operates.