Signage Rules: Rialto vs San Bernardino
How do signage rules rules compare between Rialto, CA and San Bernardino, CA?
Rialto and San Bernardino have similar restriction levels.
Rialto, CA
San Bernardino County
Rialto Municipal Code Ch. 18.78 (Sign Regulations) governs signs citywide. Consistent with standard California home-occupation rules, signs advertising a home occupation are prohibited on residential property — the use must produce no external evidence of business activity visible from the public right-of-way. Vehicle signage on personal vehicles is permitted under Cal. Veh. Code and First Amendment commercial-speech protections, but on-premises advertising signs are not allowed at a home office.
View full Rialto rules →San Bernardino, CA
San Bernardino County
Exterior signs for home businesses are generally prohibited in San Bernardino residential zones. The Development Code requires home occupations to maintain a residential appearance with no business signage.
View full San Bernardino rules →Key Facts Comparison
| Fact | Rialto | San Bernardino |
|---|---|---|
| Sign code | RMC Ch. 18.78 Sign Regulations | - |
| Home-business signs | Prohibited in residential zones | - |
| Allowed residential signs | Address, nameplate, temporary (real estate / political) | - |
| Vehicle signs | Permitted on personal vehicles per Cal. Veh. Code | Overnight parking of signed work trucks restricted |
| Exterior signs | - | Generally prohibited for home occupations |
| Limited ID plate | - | Up to 1 sq ft, non-illuminated, in some professional zones |
| Temporary signs | - | Open-house or event signs limited in size and duration |
| Rationale | - | Preserve residential character required by zoning |
Highlighted rows indicate differences between cities.
Rialto FAQ
Can I put a small sign in my front yard advertising my home business?
No. Under RMC Ch. 18.78 and Title 18 home-occupation standards, business signage in residential zones is prohibited. The home occupation must produce no external evidence of business activity.
Is a magnetic sign on my truck OK if I park it at home?
Yes, personal-vehicle signage is not regulated as an on-premises sign. However, if the vehicle is a commercial vehicle exceeding RMC weight or size limits, parking it overnight in a residential zone may violate Title 10 vehicle / parking rules.
San Bernardino FAQ
Can I put a sign on my house advertising my home business?
Not in standard residential zones. A home occupation must have no exterior evidence of the business, including signage.
What about lettering on my work truck?
Typical business lettering is fine, but large wrap advertising on vehicles parked overnight in front of the home may draw code enforcement as a de facto sign.
Are temporary event signs allowed?
Yes within strict size and time limits under the general sign code, and never in the public right-of-way without a permit.
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