Two Review Tracks
How long a permit takes depends first on which of two tracks your project falls into. Simple, standardized work often goes over the counter with no plan review: re-roofs, water heaters, fences, like-for-like electrical, mechanical, or plumbing, and some minor remodels can be issued the same day at the counter if the application is complete. Anything that needs an examiner to review drawings against the code goes to full plan review, which takes longer and runs in cycles. So the first question is not how big your project is in dollars, but whether it needs someone to sit down with your plans. That single fork explains most of the difference between a same-day permit and a months-long one.
Rough Timeline Bands
With heavy caveats, because every number here varies by jurisdiction and market, the typical bands look like this. Simple trade permits: same day to a few days. Residential remodels and additions: about one to four weeks for a first review cycle in most places. New residential construction: roughly ten to twenty-five business days in typical markets. Commercial and tenant improvements: about fifteen to thirty business days. Large commercial, multifamily, or multi-agency projects: months, and in high-demand metros like Los Angeles, San Francisco, or Seattle, a complex project can run anywhere from three to eighteen months. Treat these as planning ranges, not promises, and check your jurisdiction's published turnaround if it posts one.
What Actually Drives the Timeline
The single biggest factor you control is the completeness and quality of your submittal. Incomplete or non-compliant plans trigger correction cycles, sometimes called plan check comments, and each round of back-and-forth restarts the clock. Beyond that, the number of reviewing agencies matters, because building, zoning, fire, health, public works, and utilities may each need to weigh in, in series or in parallel. Jurisdiction backlog, staffing, and even the season affect the wait. So does the project's complexity and occupancy type, since a high-rise or an assembly occupancy follows a heavier code path. And many jurisdictions offer expedited plan check for an extra fee, often around half to all of the base fee, which can roughly halve the wait when speed matters.
The Number You Are Quoted Is Per Cycle
Here is the reframe that saves a lot of frustration: the turnaround a department quotes is usually per review cycle, not total time to issuance. If your first submittal comes back with corrections, the clock effectively starts again for the next round. So a project that clears in one cycle can beat a bigger-sounding timeline, while a small project that bounces three times can drag on. The real goal is not to find the fastest jurisdiction, it is to minimize the number of correction cycles by submitting complete, code-compliant plans the first time. The model code requires that construction documents be reviewed and approved before a permit issues, but it sets no clock on how fast, so administration and submittal quality decide the pace.
FAQ
How long does a building permit take? It ranges from same-day for simple over-the-counter trade permits, to about one to four weeks for a remodel or addition, to months for large commercial or multifamily work. High-demand metros can push complex projects to many months. Every number varies by jurisdiction.
What is over-the-counter permitting? It is the fast track for simple, standardized work like re-roofs, water heaters, and fences, where no plan review is needed and the permit can be issued the same day at the counter if the application is complete.
What slows down permit review the most? Incomplete or non-compliant plans, because they trigger correction cycles that restart the clock. The number of reviewing agencies, jurisdiction backlog, and project complexity also add time. A complete first submittal is the biggest thing you control.
Can I speed up permit review? Often yes. Many jurisdictions offer expedited plan check for an extra fee, which can roughly halve the wait. The most reliable speed-up, though, is submitting complete, code-compliant plans so you clear review in one cycle.