Structure Height Limits: Fontana vs Rialto
How do structure height limits rules compare between Fontana, CA and Rialto, CA?
Fontana and Rialto have similar restriction levels.
Fontana, CA
San Bernardino County
Fontana height limits are set in FMC Title 17. R-1 primary structures cap at about 35 ft or 2.5 stories. ADUs must reach at least 16-18 ft under Gov Code 65852.2.
View full Fontana rules →Rialto, CA
San Bernardino County
San Bernardino County Development Code limits residential structures to 35 ft in most zones, with agricultural and rural zones permitting 50 ft, measured from finished grade to highest point of the roof.
View full Rialto rules →Key Facts Comparison
| Fact | Fontana | Rialto |
|---|---|---|
| Governing Code | FMC Title 17 Development Code | - |
| R-1 Max | 35 ft / 2.5 stories | - |
| Multi-Family | 35-45 ft typical | - |
| ADU Minimum | 16-18 ft (state) | - |
| Industrial | Up to 50-70 ft | - |
| - | - |
Highlighted rows indicate differences between cities.
Fontana FAQ
How tall can my Fontana home be?
R-1 single-family primary structures are typically capped at 35 feet or two-and-a-half stories under FMC Title 17. Check the specific zone for your lot.
How tall can an ADU be in Fontana?
California law guarantees at least 16 feet for a detached ADU, and 18 feet if the lot is within one-half mile of a major transit stop.
Rialto FAQ
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