Green Building Code: Ontario vs San Bernardino
How do green building code rules compare between Ontario, CA and San Bernardino, CA?
Ontario and San Bernardino have similar restriction levels.
Ontario, CA
San Bernardino County
San Bernardino County enforces the California Green Building Standards Code (CALGreen, Title 24 Part 11) on all new construction and major remodels. Mandatory measures include water-efficient fixtures, EV-ready wiring, construction waste diversion, and indoor air quality controls.
View full Ontario rules →San Bernardino, CA
San Bernardino County
San Bernardino County enforces the California Green Building Standards Code (CALGreen, Title 24 Part 11) on all new construction and major remodels. Mandatory measures include water-efficient fixtures, EV-ready wiring, construction waste diversion, and indoor air quality controls.
View full San Bernardino rules →Key Facts Comparison
| Fact | Ontario | San Bernardino |
|---|---|---|
| Code basis | Title 24 Part 11 | Title 24 Part 11 |
| Waste diversion | 65% minimum | 65% minimum |
| EV-ready | Conduit and panel | Conduit and panel |
| Companion | MWELO landscaping | MWELO landscaping |
Highlighted rows indicate differences between cities.
Ontario FAQ
Does CALGreen apply to ADUs?
Yes. New ADUs and significant remodels must meet CALGreen mandatory measures including water fixture flow, EV-ready wiring, and construction waste diversion documentation.
What is the easiest CALGreen miss?
Most failures involve missing waste-diversion records or absent EV conduit. Plan documentation early and keep tickets from the recycler for the final inspection.
San Bernardino FAQ
Does CALGreen apply to ADUs?
Yes. New ADUs and significant remodels must meet CALGreen mandatory measures including water fixture flow, EV-ready wiring, and construction waste diversion documentation.
What is the easiest CALGreen miss?
Most failures involve missing waste-diversion records or absent EV conduit. Plan documentation early and keep tickets from the recycler for the final inspection.
Compare other topics
See how Ontario and San Bernardino compare on other ordinance categories.
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