Miami-Dade Bathroom Permits, Start to Finish

Permitting has a reputation for being the tedious part of a remodel, and in Miami-Dade it is genuinely more involved than in most of the country. It is also the part that protects you. A permitted, inspected bathroom is documented in county records; an unpermitted one becomes a problem at closing, often years later, at the worst possible moment.

When a bathroom needs a permit

The dividing line is whether the work goes past surface finishes. Painting, swapping a mirror, replacing a vanity that reuses the existing supply and drain connections, changing a light fixture on an existing box: generally no permit.

Miami-Dade publishes its permit application process and its plumbing permit requirements online, which is the authoritative reference for anything below. Permits are required once the work touches systems or structure. That includes replacing a tub or shower, altering or extending supply or drain piping, relocating any fixture, adding or moving electrical outlets or circuits, installing or relocating an exhaust fan, and rebuilding wet-area walls. In practice, nearly every project people describe as a bathroom remodel falls on the permit side of the line.

Which office issues yours

This is the question that confuses newcomers most, because Miami-Dade is a patchwork. Unincorporated county areas, which include most of Kendall and large stretches of West and South Dade, go through Miami-Dade County's building department. Incorporated municipalities run their own: the City of Miami, Coral Gables, Miami Beach, Hialeah, Doral, Pinecrest, North Miami, and Aventura each maintain their own building departments, fee schedules, and review queues. Cutler Bay contracts its building services through the county.

Practically, this means review times and local expectations vary block to block. Doral is known for efficient digital-first permitting; Coral Gables and Miami Beach are known for thoroughness. A contractor who works your specific municipality regularly is worth more than a generically good one, because they know that office's habits.

The permit structure

A bathroom typically carries a main building permit with separate trade permits filed against it, one for plumbing and one for electrical, and a mechanical permit if ductwork is involved. Each trade permit is pulled by the licensed contractor performing that scope, which is why a properly run project has a licensed plumber and a licensed electrician attached to it rather than one crew doing everything.

For projects over a dollar threshold, a Notice of Commencement gets recorded with the county and posted at the site before work begins. It identifies the owner, the contractor, and the property, and it starts the clock on Florida construction lien rights. A missing one can hold up the final inspection.

Plan review

A straightforward residential bathroom moves through plan review anywhere from about a day to roughly two weeks depending on the jurisdiction and the current queue. Corrections add a round trip: the reviewer flags an issue, the drawings are revised, and the package resubmits. Projects with structural work, an architect or engineer stamp, or changes to exterior openings take longer, and anything touching a window brings the High Velocity Hurricane Zone product-approval requirements into review, since exterior products need a current Miami-Dade Notice of Acceptance.

The permit only delays a project when nobody starts it early. Filing while finishes are still being selected is the single most effective scheduling move available on a Miami remodel.

The three inspections that matter

Rough-in. After plumbing and electrical are installed in the walls and floor but before anything is covered. The inspector verifies pipe sizing, venting, slopes, supports, and that electrical work meets code. Nothing gets closed up until this passes, which is why it sits on the schedule as a hard gate.

The shower pan flood test. The drain is plugged and the finished pan is filled with water to just below the curb, then left, commonly for 24 hours, to confirm the waterproofing holds. In a county where humidity keeps every hidden leak alive, this is the most valuable inspection in the sequence. Finding a pinhole here costs a day; finding it after tile costs a rebuild.

Final. Once fixtures, finishes, and ventilation are complete. The inspector confirms the work matches the permit, that the exhaust fan discharges to the exterior rather than into an attic, and that everything functions. Passing final is what allows the permit to close.

Closing out, and why it matters

A permit that was issued but never closed with a passing final inspection is an open permit, and it stays attached to the property in county records. Buyers' attorneys and title companies find them, and they routinely delay closings until the work is inspected or the permit resolved. Getting the final inspection scheduled and passed is the actual last step of a remodel, not an optional formality after the crew leaves.

Inherited unpermitted work

Plenty of Miami homes contain bathroom work someone did without a permit years ago. It is a common situation and a fixable one. The usual path is an after-the-fact permit, with inspections that may require opening finished walls so an inspector can verify what is behind them. Many owners fold this into a planned remodel, since the walls are coming open anyway and the project ends with the property's records clean.

For the broader picture of how permitting fits alongside cost and scheduling, see the main Miami remodel guide. Condo owners should read the condo renovation guide first, because association approval comes before any of this.