Colusa County, CA Home Business: Zoning & Home Occupation Permits (2026)
Key Facts
- Floor area cap
- 25% of dwelling / 50% of accessory bldg.
- Employees allowed
- Family members only
- Merchandise sales
- Only goods made on premises
- External evidence
- No noise, smoke, odor, vibration
- Signage
- One sign under §44-3.50
- Permit needed
- Administrative permit, before starting
Summary
Running a business from home in unincorporated Colusa County requires an administrative permit and compliance with Zoning Code Section 44-4.90, which caps the operation at 25% of a dwelling's floor space (50% of an accessory building), bars outside employees, and limits merchandise sales to goods made on site.
44-4.90 Home Occupations. Home occupations shall be permitted as appurtenant and accessory uses to any residential uses. The following standards shall apply to each home occupation: A. The home occupation is confined completely within a legal structure and occupies not more than twenty-five percent of the floor space of a dwelling or fifty percent of that of an accessory building. B. The home occupation involves no sales of merchandise other than that produced on the premises, or directly related to and incidental to the service offered. C. The home occupation is carried on by the members of the family occupying the dwelling with no other persons employed. D. The home occupation produces no evidence of its existence upon or beyond the premises such as external alteration creating nonresidential or unsightly appearance of a structure, noise, smoke, odors, vibrations, etc., except one sign as allowed by Section 44-3.50 (Sign Regulations). E. No home occupation shall be allowed unless an administrative permit has first been issued for such use as required by Article 44-1.
Full Breakdown
90 permits home occupations 'as appurtenant and accessory uses to any residential uses' but binds every one of them to five standards. ' Subsection B restricts sales to 'no sales of merchandise other than that produced on the premises, or directly related to and incidental to the service offered,' ruling out reselling outside inventory. Subsection C requires the business be 'carried on by the members of the family occupying the dwelling with no other persons employed,' so hired staff are off the table. 50 (Sign Regulations).
020, that administrative permit is 'a ministerial zoning action' reviewed by the Department of Planning and Building rather than a discretionary hearing, but it is still a mandatory prerequisite, not an option.
Violations & Fines
Operating a home occupation without the required administrative permit, or exceeding the floor-area cap, hiring outside employees, reselling outside merchandise, or generating exterior noise, odor, or other evidence of the business, is a Zoning Code violation. Section 44-1.130.030 treats any such violation as a misdemeanor punishable by a fine of up to $5,000, up to six months in jail, or both, with the county also able to pursue permit revocation or abatement under Chapter 42.
Frequently Asked Questions
How much of my house can I use for a home business in unincorporated Colusa County?
Can I hire employees for my home business?
Can I sell products I did not make at home?
Do I need a permit before starting a home occupation?
Sources & Official References
Other rules in Colusa County
How Colusa County compares: Easiest Cities to Run a Home Business·California rules heatmap·Compare Colusa County to another location·View the California home business overview
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