Skip to main content
alpha dream

Ontario, California.

Ontario's wide R1 lots and lower land costs make detached ADUs and substantial additions the dominant inland build types.

Plan check runs through Ontario Building Department, with submittal, corrections, and inspection scheduling all handled in our license — CSLB #1145233. Typical Ontario Building Department review on residential work runs 4–10 weeks depending on department backlog, with one round of corrections expected; we book the structural and final inspections directly through the permit portal so the schedule does not slip on coordination.

Services in Ontario.

Near Ontario.

Made it this far?Leo's on site · replies in ~3h

Then you're serious. Let's put it on a clipboard.

  • 10-minute call with the foreman
  • We tell you what your build actually costs, today
  • No follow-up unless you ask

Free · Same-week scheduling

Contact form · 30 seconds

or call Leo →

No spam. We reply personally — usually within 3 hours.

Call