Permit guide
Permit Inspections in California: What Contractors Need to Schedule, Pass, and Document
Getting a permit approved is step one. Scheduling and passing inspections is where most California contractors lose time. Here's how to run inspections smoothly across every trade.
Getting a permit approved is step one. Scheduling and passing inspections is where most California contractors lose time. Here's how to run inspections smoothly across every trade.
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.
How California permit inspections work
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:
- Solar PV: Typically rough inspection (before roof penetrations are covered) and final inspection after installation
- Electrical (panel replacement, EV charger): Rough-in inspection and final inspection; some jurisdictions require utility presence at final
- HVAC: Rough inspection (before drywall), pressure test, and final inspection
- Plumbing: Rough-in, pressure test, and final; additional stages for complex projects
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 most common inspection failures by trade
Solar inspections
- Rapid shutdown device not installed or not compliant with NEC 2017 requirements
- Roof setbacks don't match approved plans (fire access pathways)
- Wire management doesn't match the approved single-line diagram
- Required labeling missing from disconnect and panel
- Installed equipment differs from what was permitted (different inverter model)
Electrical inspections
- Work not matching approved plans
- Missing or incorrect AFCI/GFCI protection
- Conduit fill exceeds code limits
- Grounding and bonding issues
- Panel labeling incomplete
HVAC inspections
- Duct work doesn't match approved plans
- Refrigerant lines not properly secured or insulated
- Disconnect not installed or not within required distance
- Title 24 HERS verification issues
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.
HERS verification: the California-specific wildcard
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.
Track permits and inspection status automatically
InstaPermit monitors your permit status 24/7 — know the moment each inspection milestone is due.
Documentation contractors must have on-site during inspections
California inspectors can fail an inspection for missing documentation even if the physical work is perfect:
- The approved permit must be printed and posted visibly at the job site
- Approved plans must be present and match the work installed
- Manufacturer spec sheets for major equipment (required in some jurisdictions)
- Previous inspection sign-off documentation for multi-stage inspections
- HERS verification certificate for applicable HVAC projects
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.