San Jose, CA Home Business: Signage Rules (2026)
Key Facts
- Sign allowance
- 1 attached or freestanding sign
- Size cap
- 32 sq ft max (1 sq ft/unit)
- Attached sign height
- 12 feet maximum
- Freestanding sign height
- 3 feet maximum
- Illumination
- Not allowed
Summary
San Jose gives home occupations no special signage allowance: Section 20.80.710's Table 20-160 requires home-business signage to meet the same residential sign standards as any house, capped under Chapter 23.04, Part 4.
Signage must conform to the residential signage requirements set forth in Part 4 of Chapter 23.04 of Title 23. Business Vehicles A maximum of one business vehicle with a manufacturer's gross vehicle weight of less than ten thousand pounds is permitted to be kept, garaged or parked on the lot or parcel associated with the home occupation. Clients A maximum of two clients at a time are permitted at the dwelling. Employees and Assistants Only occupants of the dwelling may be employees or unpaid volunteers of the business or commercial activity; provided, however, that Note 1 below this Table 20-160 applies to and shall govern and control over cottage food operations. Environmental Constraints There shall be no obnoxious odors, vibrations, glare, fumes, dust, electrical interference or noise detectable by normal human sensory perception outside the dwelling or through vertical or horizontal party walls. Hours of Operation Clients are permitted at the residence only between the hours of 9:00 a.m. and 9:00 p.m. Location Dwelling Unit Home occupations, including storage, are permitted in the dwelling unit. Accessory Building Home occupations, including storage, are limited to one hundred square feet of floor area in an accessory building provided any required parking provided in the accessory building is retained and accessible. Attached Garage Home occupations are permitted in an attached garage provided the required parking is retained and accessible.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 5 Update 3).
Full Breakdown
Table 20-160, the performance criteria a home occupation must meet to stay legal, sends signage straight to the residential sign rules in Chapter 23.04, Part 4: there is no separate home-business sign allowance. Under Section 23.04.320, that means one attached or freestanding sign per parcel, capped at one square foot of sign area per occupancy unit and never more than 32 square feet total, attached signs no higher than 12 feet, freestanding signs no taller than 3 feet and set within 5 feet of the house, and no illumination except required safety or directional signs.
Violations & Fines
Signage that exceeds Table 20-160's cross-referenced residential limits disqualifies the activity as a lawful home occupation under Section 20.80.710, exposing the operator to code enforcement as an unpermitted business.
Frequently Asked Questions
Can a San Jose home business put up a lit sign?
Does running a business from home unlock bigger signage?
Sources & Official References
Other rules in San Jose
California rules heatmap·Compare San Jose to another location·View the California home business overview
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Signage Rules in Nearby Cities
How other cities in Santa Clara County handle signage rules.