Title 24 reports for Ontario permits.
Ontario submits through its Citizen Portal Access system — and runs a distinct fast track for preapproved ADU plans. Here’s what applies to your Title 24 documentation either way.
Two tracks: standard review, and a 30-day preapproved-ADU track
Ontario’s Building Department reviews plans through its Citizen Portal Access system, alongside Planning, Engineering, Fire and the Ontario Municipal Utilities Company. Unlike some neighboring cities, Ontario still lists a physical Building Counter at City Hall as a service point — it isn’t purely digital-only. The city doesn’t publish a general turnaround figure for standard residential plan check. For one track it publishes a ceiling rather than a commitment: the city’s own handout says a preapproved ADU plan submitted unmodified may take up to 30 days.
Ontario’s own ADU rules cap units at 850 sf (studio/1BR) or 1,000 sf (2+BR), require a 4-ft rear/interior-side setback and a 6-ft building separation, and charge impact fees on any ADU/JADU 750 sf or larger. No local energy reach code beyond state CALGreen/Title 24 minimums was found on the city’s own pages — Ontario runs the standard state mandatory measures.
One thing that doesn’t change by city: my price and turnaround are flat statewide — $99 first report, $150 flat after, 24–48 hours on your first job. What differs city to city is what happens on the plan-check side before and after the CF1R lands in your permit set, which is what this page covers.
Nearby, same flat rate: Upland & Chino, Rancho Cucamonga, Pomona and Fontana.
Prices
Flat fees, in writing before I start. No hourly, no bid package, no change-order games — the number on the quote is the number on the invoice.
One honest note
I’m not a licensed engineer or architect, and I don’t stamp drawings. On the CF1R I’m the documentation author — you stay the responsible designer. Nothing about your role on the job changes.
That’s on purpose. I’m not after your scope or your clients. I do one piece of the permit set — the piece that usually holds it up — and I do it fast.
Ontario plan-check questions
If yours isn’t here, see the full FAQ or call and ask.
Does using Ontario's preapproved ADU plan program change the Title 24 report?
Does Ontario require in-person plan submittal?
Does my ADU or addition actually need one?
Almost certainly. New conditioned floor area — ADUs, JADUs, garage conversions, additions — triggers Title 24. So do alterations that touch the envelope, the ductwork, or the HVAC equipment, including a straight change-out. A remodel that only moves non-structural interior partitions usually doesn’t.
Send it either way. If it doesn’t need a report I’ll say so and there’s no charge for the look.
What do you need from me to start?
A PDF of the architecturals and the project address. Floor plans, elevations and a window schedule is plenty.
You don’t need the HVAC or water heater picked. If the plans don’t call them out, I model what I’d normally specify for that job — and I list every assumption in the email so nothing is buried. Swap any of it and I rerun; that doesn’t count against your free revisions.
The design doesn’t have to be finished either. Early is often better, because that’s when a compliance problem is still cheap to fix.
Send your Ontario plans.
Standard submittal or the preapproved ADU track — either way, the CF1R comes back registered and ready.