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San Jose, CA Home Business: Signage Rules (2026)

Significant Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 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.

View official code

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?
No. Section 23.04.320(F)(3) bars illumination on residential-parcel signs except required safety or directional signs.
Does running a business from home unlock bigger signage?
No. Table 20-160 in Section 20.80.710 requires home occupation signage to follow the same Part 4 residential rules as any other house.

Sources & Official References

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