City guide / San Bernardino County
Title 24 planning in Ontario
Preparation guidance for energy compliance documentation in Ontario, California. Remote statewide service; local requirements come from your building department.
Hypothetical example / Ontario
Distribution building with office mezzanine
Suppose a distribution building includes a conditioned office mezzanine. Define the conditioned area and ask about required forms. Mezzanines may be partially enclosed or open to the warehouse, which affects whether they can be conditioned separately. Specify walls, ceiling and floor assemblies enclosing the office, and the HVAC system serving it. Provide the lighting schedule for both the mezzanine and any warehouse lighting being altered, and confirm which forms apply.
Illustrative scenario only; not a statement about local projects, climate or permit rules.
Scenario checklist
- Define mezzanine boundary
- Specify systems
- Provide lighting schedule
- Confirm forms
Checklist for Ontario
- 01Identify which agency reviews permits for your Ontario parcel (city, county or other).
- 02Confirm the building climate zone for the exact address using the CEC tool.
- 03Ask which Energy Code cycle applies to your application date.
- 04Ask whether local amendments or reach codes apply to your scope.
- 05Ask how energy forms should be included: on plan sheets, uploaded separately, or both.
County guide: another example
Warehouse office build-out
Read the San Bernardino County guideQuestions
Do you have an office in Ontario?
No. Service is remote and statewide; this page is a planning guide.
Where do I confirm Ontario requirements?
With the building department that reviews your permit. Many incorporated cities run their own; confirm whether Ontario or San Bernardino County reviews your parcel.
How to use the official resources
Government links below are starting points for identifying the authority for the actual property and scope. They are not evidence of an affiliation, an office or approval of this service. Confirm whether the county, an incorporated city or another agency reviews the project.
The CEC climate tool supports a location-specific lookup; this guide assigns no climate zone. The CEC Energy Code Support Center separates edition-specific forms and building categories. Confirm the applicable edition, document family and any registration or verification requirements before using a form.
CEC Energy Code Support Center: forms, FAQs and trainingNext step
Preparing a project in Ontario?
Published flat pricing from $149 residential and $399 commercial. Upload plans privately; no payment is taken online.