Rialto, CA Short-Term Rentals: Occupancy Limits (2026)
Key Facts
- Local STR occupancy cap
- None adopted
- Transient threshold
- 30 consecutive days or less - RMC 3.08.020(D)
- State default
- Uniform Housing Code standards via HSC Sec. 17922
- Common UHC guideline
- About 2 persons per bedroom plus 1
- Nuisance backstop
- RMC Ch. 18.72 property maintenance rules
Summary
No Rialto-specific ordinance directly addresses short-term rental occupancy limits; California state default applies. General habitability and occupancy standards flow from the State Housing Law (Health and Safety Code Sec. 17922), which adopts Uniform Housing Code requirements.
Except as otherwise specifically provided by law, the building standards adopted and submitted by the department for approval pursuant to Chapter 4 (commencing with Section 18935) of Part 2.5, and the other rules and regulations that are contained in Title 24 of the California Code of Regulations, as adopted, amended, or repealed from time to time pursuant to this chapter shall be adopted by reference... [The building standards] shall impose substantially the same requirements as are contained in the most recent editions of... the Uniform Housing Code of the International Conference of Building Officials, except its definition of 'substandard building.'
Official source re-checked September 7, 2026: the cited page had not changed since it was quoted.
Full Breakdown
Neither the Rialto Municipal Code's transient occupancy tax chapter (RMC Chapter 3.08) nor its zoning code (Title 18) sets a maximum guest count for short-term rentals - the City has adopted no STR-specific occupancy, night-cap, or guest-limit rules. The only occupancy-related threshold in local law is definitional: RMC 3.08.020(D) classifies a person as a 'transient' when occupancy is for 30 consecutive calendar days or less, which determines whether the 9 percent transient occupancy tax applies. Absent local regulation, the California state default governs. Under Health and Safety Code Sec. 17922, the state's residential building standards must impose substantially the same requirements as the Uniform Housing Code, whose dwelling-space standards (commonly applied as roughly two persons per bedroom plus one additional occupant) set the floor for lawful occupancy of any dwelling, including one offered as a short-term rental. Property owners remain free to set their own contractual guest limits in rental listings and agreements.
Violations & Fines
Because there is no local STR occupancy ordinance, the City cannot cite a host simply for guest count. Overcrowding that violates state habitability standards adopted under Health and Safety Code Sec. 17922, or conditions creating a nuisance under RMC Chapter 18.72 (Property Maintenance - Nuisances), can be enforced through code enforcement action, administrative citations under RMC Chapter 1.10, or misdemeanor/infraction prosecution under RMC 1.16.010.
Frequently Asked Questions
How many guests can stay in a Rialto short-term rental?
Does the 30-day rule limit how long guests can stay?
Sources & Official References
Other rules in Rialto
California rules heatmap·Compare Rialto to another location·View the California short-term rentals overview
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Occupancy Limits in Nearby Cities
How other cities in San Bernardino County handle occupancy limits.