Permit timelines are usually answered with a shrug, or with a number from a city web page that nobody measures against reality. This is what Los Angeles's own permit records actually show: the time between the date a permit was filed and the date it was issued, across 965 Los Angeles permits that carry both dates.
The short answer: the median Los Angeles building permit is issued 65 days after it is filed. Half are issued sooner. The middle half land between 20 and 183 days, and the type of work moves that number more than anything else — see the table below.
How long it actually takes
This guide measures the actual time between when a permit is filed and when it’s issued, based on Los Angeles’s own records. It reflects real-world processing, not any city-published target or promise. The median figure represents the midpoint of all completed permits, but the range around it—how much faster or slower some permits move—is more important for setting realistic expectations.
Focus on the median as a baseline, but understand that a permit could be issued significantly sooner or later. The spread between the fastest and slowest permits matters more than the single number in the middle.
What the numbers say
The table below shows the median processing time for various permit types across Los Angeles. It reveals a clear pattern: simpler, lower-risk work like pools or decks typically clears faster than complex projects involving structural changes or new living spaces. Permits requiring detailed engineering reviews or multiple trades generally take longer than those that are straightforward.
| Type of work | Median days to issue | Typical range | Permits measured |
|---|---|---|---|
| ADU / accessory unit | 88 | 29–249 | 255 |
| Addition | 109 | 52–249 | 161 |
| Pool / spa | 39 | 7–109 | 113 |
| Demolition | 54 | 39–150 | 73 |
| Deck / patio | 73 | 11–213 | 71 |
| Foundation / seismic | 21 | 7–90 | 38 |
| Windows | 25 | 7–65 | 37 |
This pattern holds because foundational work and additions involve more technical review, while basic installations like pools often require minimal scrutiny once basic safety standards are met.
What actually drives your timeline
- A complete application with all required documents avoids the back-and-forth that delays processing.
- Permits requiring formal plan review by city staff move slower than those issued over-the-counter.
- Each round of revisions requested by the city adds significant time to the process.
- Expanding the project scope after filing often triggers new reviews and delays.
- Seasonal demand spikes and existing city backlogs can stretch processing times unpredictably.
How to use this
Use permits for similar work types in the table to set realistic expectations for your project. If you’re building an accessory unit, compare it to other ADU permits, not to pool permits. This gives you a practical benchmark based on actual city data.
If your permit hasn’t moved after a period comparable to the median for your work type, it’s a signal to contact the city for an update. Don’t assume it’s stalled just because it’s taking longer than the median—check the context of your specific project.
Check your own project
Look up what comparable permits actually cost and how long they took with the free permit benchmark check — pick Los Angeles, your type of work, and your budget.
- Los Angeles building permits: search and history — recent filings with addresses, types, and valuations.
- Look up a specific address — see what has been filed at a property.
- Weekly Los Angeles permit digest — the biggest projects filed each week.
Timelines are measured from The Permit Sheet's copy of Los Angeles's official permit records and reflect permits that were actually issued. They are a description of what happened, not a promise about your application.