Most homeowners get a building permit in one to six weeks, but the honest answer runs from same day for simple over-the-counter jobs to several months for large additions in busy cities. Three things decide where your project lands: what you're building, how complete your application is when it hits the counter, and how fast your city's review queue is moving. Here's what those numbers actually look like in 2026 — and how to keep your project out of the slow lane.
A quick warning before the numbers: there is no single national answer. Permit review is run by roughly 19,000 local jurisdictions, each with its own staffing, software, and workload, so the ranges below are planning tools — not promises. Your city's building department (or its published dashboard) always beats a national average.
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Average permit timelines by project
Building departments sort projects by risk. The simpler and more prescriptive the work, the faster the review, because the plans examiner is checking against a checklist instead of engineering your drawing. These ranges reflect what U.S. cities are quoting in 2026:
- Over-the-counter permits (water heater, re-roof, like-for-like electrical, window swaps): same day to 5 business days. The biggest cities now run these entirely online — Los Angeles issues "express permits" for qualifying small projects with no plan check at all, so the permit is issued the moment your application passes validation (dbs.lacity.gov).
- Fences, decks, patios, sheds: 1–3 weeks once a complete application is in. These projects need zoning checks (height, setbacks, lot coverage) more than structural review. Fences have their own height and location rules — see our guide to fence permit rules and exemptions before you assume yours is exempt.
- Remodels, additions, garage conversions: 4–8 weeks of plan review is the realistic band, and high-volume departments run longer. Walnut Creek, California publishes its own numbers: first review takes 8–28 business days depending on project type, and future review cycles add weeks on top (walnutcreekca.gov).
- ADUs and new homes: 6–10+ weeks, and longer in jurisdictions with heavy pipelines — though two big states now cap the wait by law (more on that below).
Project size matters less than project complexity here. A modest deck can take longer than a larger garage conversion if the deck crosses a setback line or needs frost-depth footings, because zoning checks are quick while structural reviews are not. What adds time is rarely square footage — it is the number of code systems touching the job: structural, electrical, plumbing, mechanical, energy, and zoning each pull the drawings toward a different reviewer's queue, and every extra set of eyes adds days to the calendar.
Those figures cover plan review only. Pad the estimate with a few days for intake and the completeness check on the front end, and a few business days for fee payment and permit issuance once all comments are cleared. And note how the deadline is written: 30 business days is six calendar weeks, because weekends and holidays don't count. Cities that quote "weeks" usually mean calendar weeks, but every department pauses its clock while it waits on your corrections.
What review times look like in real cities
Cities increasingly publish their own review-time data, and the spread is wide — the same addition that takes a month in one jurisdiction can take a quarter in another. A few official 2026 data points worth knowing:
| City | Published review performance (2026) |
|---|---|
| Los Angeles, CA | Express permits for small projects issued online without plan check — effectively same day |
| Seattle, WA | Performance goals of 30–180 days by complexity; simple "Full" reviews target 2 business days (seattle.gov) |
| Walnut Creek, CA | First review 8–28 business days by project type |
| Salt Lake City, UT | Optional expedited review for 2× the standard review fee (slc.gov) |
| Indianapolis, IN | Flat $2,500 accelerated plan review, on top of standard fees (indy.gov) |
Check your own building department's website — a growing number now post live dashboards with median and 90-day average review times, which beats any anecdote you'll read in a forum.
State deadlines that cap your wait
A few states have stopped waiting for cities to modernize and simply put a legal ceiling on review time. If your state has one, "how long will it take" stops being a guess and becomes a maximum:
- Florida: under § 553.792, a building permit application for a single-family residential dwelling must be approved or denied within 30 business days of a complete and sufficient application (Florida Statutes § 553.792). A 2026 reform wave (HB 803) also exempts many small single-family jobs from permitting outright — for those, the wait drops to zero because there's no permit to wait for.
- California: ADU applications must be approved or denied within 60 days of a complete submission under state ADU law, which the Department of Housing and Community Development enforces against local ordinances (hcd.ca.gov). Since 2023, AB 2234 adds a second layer of protection for housing projects: the city must tell you whether your post-entitlement permit application is complete within 15 business days, then approve or deny it within 30 business days for projects of 25 units or fewer — 60 for 26 or more. Single-family homes and ADUs that have cleared zoning fall under the 30-day cap (smcgov.org).
One catch: these deadlines only bind the city if your application is genuinely complete. An incomplete submittal stops the statutory clock in every state that has one — which is exactly why the quality of your first package matters more than anything else in this article.
What if the city misses the deadline?
Remedies vary, and honesty matters here. In California, an ADU application that sits past 60 days can be deemed approved — the state treats silence as consent, which gives homeowners real leverage. In Florida, § 553.792 gives applicants the right to escalate, and persistent misses are exactly the kind of thing the 2026 reform wave was written to fix.
In most other states, though, there's no automatic penalty: your realistic options are a polite status request (in writing, so it's tracked), a call to the plans examiner assigned to your project, or — as a last resort — a courtesy escalation to the building official. What not to do is let the silence stretch for weeks without asking. Departments juggle hundreds of active submittals, and the applicants who check in politely every week or two genuinely do move faster than the ones who wait to be contacted.
If escalation becomes necessary, keep it factual: cite your submission date, the city's completeness confirmation, and the department's own published turnaround target. Building officials respond to a documented timeline far faster than to frustration, and a written record protects you if the delay drags on.
What actually causes delays
The number one reason permits stall is an incomplete application: missing site plans, undersized structural details, or the wrong energy forms. Each correction cycle adds 1–3 weeks — the reviewer writes comments, you or your designer revise, and the resubmittal rejoins the queue behind newer applications. Two or three cycles is where "a few weeks" quietly becomes "a few months."
Beyond the application itself, the usual suspects:
- Seasonal queue volume. Building departments are busiest from spring through early fall; a January submittal often clears faster than the identical June one.
- Changes requested mid-review. Redesign the deck or move a wall while the plans are in review, and the clock effectively restarts — reviewers comment against the version they have.
- Outside approvals on their own clocks. HOA architectural letters, health department sign-offs, fire marshal review, historic-district certificates. If your project needs any of these, the city can't finish review until they land.
- Scope that crosses a trigger. A bathroom remodel that removes a wall, or a patio that crosses a setback line, adds structural and zoning review your first estimate didn't include — and a fresh round of comments.
How to speed yours up
- Submit a reviewer-friendly package. Complete forms, a scaled site plan, code notes on the drawings, and the energy forms your state requires. Most cities publish an intake checklist — the applicants who use it are the ones who skip the first correction cycle entirely.
- Respond to correction comments within days, not weeks. The review clock usually stops while a permit waits on your revisions, so every idle week is a week you gave away. Get your designer engaged the day comments arrive.
- Ask about expedited review. Salt Lake City runs third-party expedited review for twice the standard fee, and Indianapolis sells a flat $2,500 accelerated review. If your project carries a few hundred dollars a day in loan interest, rent, or crew standby time, buying back two or three weeks can pay for itself.
- Book a pre-submission meeting if the department offers one. Thirty minutes with a plans examiner catches the site-plan and structural gaps that would otherwise cost you a full review cycle.
- File through the online portal where one exists. Online submissions skip the counter line, get date-stamped immediately, and make it far easier to track what stage your plans are actually in.
After the permit is issued
Approval isn't the finish line — permits come with their own clock. Most cities issue them valid for 6–18 months, and the window usually starts at issuance or at first inspection. Let it lapse and you're reapplying and paying plan-review fees a second time.
Once work starts, the staged inspections listed on your permit card — footing, framing, rough electrical, insulation, final — are what keep the permit alive and legal. Each stage needs sign-off before you cover the work with drywall, concrete, or backfill, and the final inspection is what actually closes the permit out with the city. An open, never-finalized permit follows the property, not the contractor, and it surfaces during resale disclosures.
Schedule each inspection as early as your contractor's calendar allows. Same-day or next-day slots are common on municipal portals, but inspection backlogs stretch in busy seasons, and an idle crew waiting on a framing sign-off costs real money. And if your contractor pulled the permit, confirm whose license number is on it — the license holder is the party responsible for calling in each stage, and gaps there are how permits quietly expire.
And whatever you do, don't start construction while review is still pending — fines, stop-work orders, and forced tear-outs are the realistic outcome, which we've covered step by step in what happens if you build without a permit.
If you're still budgeting the project, our building permit costs by state guide breaks down what the permit itself will run you, city by city.
Home Permit Pro prepares complete, reviewer-friendly packages that pass plan check faster — and we track your submission daily so it never sits unnoticed.
