Most permit tracking conversations focus on the approval — getting from submission to approved status. But for California contractors, the inspection process after approval is where the most schedule disruption actually occurs. Failed inspections, missed inspection windows, and re-inspection delays cost contractors significant time and money every week.
This guide covers the inspection process across California's major trades — solar, electrical, HVAC, and plumbing — and the specific things that cause inspections to fail or get delayed.
Once a permit is approved and work begins, California building codes require inspections at specific stages of the work. The number of required inspections varies by trade and project complexity:
Each inspection must be scheduled in advance through the building department's system — typically the same portal where the permit was submitted. Most California jurisdictions require 24–48 hours advance scheduling for next-day inspection windows.
The re-inspection cost: A failed inspection means scheduling a re-inspection (24–48 hours minimum), correcting the deficiency, and having the inspector return. In most California jurisdictions, the first re-inspection is covered by the original permit fee. Subsequent re-inspections typically incur additional fees.
California's HERS (Home Energy Rating System) verification requirement catches many HVAC contractors off-guard. Certain HVAC replacements and new installations require third-party verification by a certified HERS rater in addition to the standard building department inspection.
HERS verification requirements apply to: duct system changes, refrigerant charge verification on new HVAC equipment, and certain Title 24 compliance measures. Failing to schedule HERS verification before the final inspection will fail the final, even if the work itself is correct.
InstaPermit monitors your permit status 24/7 — know the moment each inspection milestone is due.
California inspectors can fail an inspection for missing documentation even if the physical work is perfect:
A best practice: create a job site folder for every permitted project that travels with the crew, containing the permit, approved plans, spec sheets, and inspection log. This eliminates the most common documentation failures.
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