One of the most common questions California contractors ask when expanding into a new market: how long will permits take? The answer varies significantly — from 2–5 days for streamlined solar in San Diego to 28+ days for complex projects in the Inland Empire. This guide gives you real 2026 timelines based on contractor experience across California's major markets.
| Region / City | Standard solar | Solar + storage | Notes |
|---|---|---|---|
| City of San Diego | 7–14 days | 14–21 days | Standard plan: 2–5 days |
| LADBS | 10–21 days | 15–28 days | OTC available for qualifying |
| Bay Area (avg) | 7–18 days | 12–25 days | Varies by city |
| Orange County (avg) | 10–21 days | 14–28 days | Irvine fastest at 7–12 |
| Riverside County (avg) | 14–28 days | 18–35 days | Corona fastest at 10–18 |
| San Bernardino (avg) | 14–30 days | 18–38 days | Ontario fastest at 10–18 |
| Sacramento area | 7–14 days | 12–21 days | Folsom/Roseville fastest |
| Fresno / Central Valley | 7–16 days | 12–22 days | Clovis faster than Fresno |
| Region | Panel replacement | EV charger (streamlined) | Service upgrade |
|---|---|---|---|
| San Diego | 5–10 days | 2–5 days | 5–10 days |
| Los Angeles (LADBS) | 5–14 days | 3–7 days | 5–14 days |
| Bay Area | 5–12 days | 3–7 days | 5–12 days |
| Orange County | 7–14 days | 3–7 days | 7–14 days |
| Inland Empire | 7–16 days | 5–10 days | 7–16 days |
Standard HVAC replacement (like-for-like) processes in roughly the same timeframe as electrical permits. Heat pump installations (replacing gas with electric) run 20–35% longer due to Title 24 documentation requirements. Add HERS verification scheduling on top of the permit approval — HERS must happen before the final inspection.
Makes permits faster: Complete submittals with all required documentation; standard/common project types; use of streamlined programs where available; electronic submittal where offered; responding to corrections within 24 hours.
Makes permits slower: Missing documentation; non-standard project configurations; paper submittals where electronic is faster; slow correction responses; submitting to the wrong jurisdiction; peak construction season volume.
The discovery lag factor: These timelines assume you find out about approvals and corrections the same day they're issued. If you're checking portals every few days, add your average discovery lag to every timeline above. A 14-day permit with a 3-day discovery lag is effectively a 17-day permit for scheduling purposes.
The most effective approach: submit permits as early as possible in the project timeline, start utility interconnection applications in parallel with building permits, and use automated permit tracking so you find out about approvals and corrections the same day they happen — not when someone remembers to check the portal.
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