How Long Does an ADU Permit Really Take in Orange County?

The countdown doesn't start when you hit "submit"

Here's the part that trips people up. Florida law now says the county has to approve or deny a permit for a structure this size within 30 business days. Sounds fast. A month and you're building.

But read the fine print and the whole thing turns. Those 30 days only start counting once you've handed in a "complete and sufficient" application. Not when you submit — when you submit everything, correctly, with nothing missing.

Think of it like a deli counter where the ticket only prints after your order is fully written down. Show up with a blank where the boundary survey should be, or plans that reference the wrong building-code year, and you didn't take a number. You've just been standing there, watching people who came in after you get called first.

That's why one neighbor swears it took six weeks and another swears it took six months. One of them handed over a clean package. The other spent three rounds filling in blanks, and every round sent them back to the end of the line.

Where the weeks actually go

Walk the calendar and it's really four stretches, not one.

First, getting your plans and site work ready to submit — the survey, the grading, the engineering stamp. If you're using one of the pre-designed Ready Set Orange models, a lot of that heavy lifting is already done, which is the whole point: fewer things on the page for a reviewer to flag. That program only applies in unincorporated Orange County, though. If your lot sits inside a city — Winter Garden, say — you're dealing with that city's building department, not the county's, and the pre-approved plans don't carry over. A place like Conway or Azalea Park, being unincorporated, plays by the county's rules.

Second, county plan review through the Fast Track portal. A clean single-story ADU can clear in a couple of weeks. Add corrections and it stretches, because a correction doesn't pick up where you left off — it drops you back into the queue.

Third, actual construction. Figure a few months of building once the permit's in hand, and pad it for Central Florida's summer, when the afternoon storms decide your pour schedule for you.

Fourth is the one nobody circles on the calendar. We'll get to it, because it's where people get stuck at the very end.

The last stall: getting the power turned on

You'd think the finish line is the last nail. It isn't. The permit isn't closed until the whole thing comes down to a line item called a 290 final — the final inspection. Miss the window to pass it and the permit can lapse, and now you're paying to reinstate it.

Then there's the meter. An ADU generally needs its own connections — its own electric service, water, sewer — not a splice off the main house. Setting that up runs on the utility's schedule, not yours, and a needed service upgrade can quietly add weeks after the building already looks done.

Here's the number that tells the real story. In the program's first year, Orange County took in more than 400 applications. Finished units? One. A couple more were wrapping up. The rest were stacked up somewhere in this pipeline — most of them still in permitting. That's not a scare stat. It's just how many places a project can pause between the idea and the day someone actually moves in.

So how long will yours take?

The truthful answer is: it depends on your lot, and you can find most of it out before you spend a dollar on plans. Is your property unincorporated, or inside a city? How tight are your setbacks? Do you already have a current survey? Is there a service upgrade lurking? Each of those either keeps your application "complete" out of the gate or plants a blank that stops the clock before it starts.

That's exactly what the ADU Fit Check is for. Answer a few questions about your address and your yard, and you'll see whether your lot is a clean shot or one with a hurdle worth knowing about now — while it's still cheap to fix. Start with the fit check before you fall in love with a floor plan. It's the difference between the six-week story and the six-month one.

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