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Do you need a permit for a sink drain / P-trap repair in Orange County, FL?

Q: Do I need a permit for a sink drain / P-trap repair in Orange County, FL?

No permit needed. FBC 105.2 exempts stopping leaks and clearing stoppages provided no valves, pipes, or fixtures are replaced or rearranged; concealed pipe REPLACEMENT is new work requiring a permit.

Updated 2026-08-02 · Sources verified 2026-07-20

Thinking about a sink drain / P-trap repair in the Orlando area? Here's what actually matters — permit rules for Orange County and the City of Orlando, plus the mistakes and code requirements that trip up homeowners, sourced from manufacturer manuals and the Florida Building Code.

The permit answer

No permit needed. FBC 105.2 exempts stopping leaks and clearing stoppages provided no valves, pipes, or fixtures are replaced or rearranged; concealed pipe REPLACEMENT is new work requiring a permit.
Source: https://up.codes/viewer/florida/fl-building-code-2023/chapter/1/scope-and-administration

Orange County and the City of Orlando run separate permit offices with separate portals — and your mailing address alone doesn't tell you which one covers your home. Check which permit office covers your address →

Key facts before you start

Slip-joint washer orientation: nut slides on first, then washer with the beveled/tapered side facing the fitting (away from the nut, toward the joint being sealed) — reversed washers are the #1 cause of trap drips (Oatey install guide).
Plastic slip nuts: hand-tighten, then max a quarter-turn with pliers; overtightening cracks nuts/strips threads. Never use thread tape or glue on slip joints — the washer alone seals; solvent-weld only fixed PVC runs, never the trap's slip connections (Oatey).
FBC-Plumbing 1002: trap seal must be 2-4 in deep; vertical drop from fixture outlet (tailpiece) to trap weir max 24 in; S-traps, bell, drum, and crown-vented traps are prohibited — do not 'fix' a leak by looping the pipe into an S-trap. Slip joints are code-legal only at trap inlet, outlet, and within the seal (1002.2).
Trap arm must slope 1/4 in per ft toward the wall (FBC-P Table 704.1, pipe <=2-1/2 in). Sizing: lavatory trap min 1-1/4 in, kitchen sink 1-1/2 in (Table 709.1), and a trap may never be larger than the drain pipe it discharges into (1002.5).
Disposal/dishwasher order: dishwasher hose connects to the disposer's dishwasher inlet ABOVE the trap — you must knock out the inlet plug first (leaks flood the cabinet if hose is clamped over the plug intact... reversed error: unremoved plug backs up the dishwasher). Route the hose in a high loop under the countertop or through an air gap where local code requires (InSinkErator).
Clean vs replace: traps need no routine maintenance — clear clogs via the union first. Chrome-plated brass traps corrode from inside and wall-thin over years (pitting near the nut is replacement time); polypropylene/PVC resists corrosion — swap a repeatedly leaking chrome trap for plastic rather than re-tightening (Oatey).

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Frequently asked questions

Do I need a permit for a sink drain / P-trap repair in Orange County, FL?

No permit needed. FBC 105.2 exempts stopping leaks and clearing stoppages provided no valves, pipes, or fixtures are replaced or rearranged; concealed pipe REPLACEMENT is new work requiring a permit.

What's the most common mistake homeowners make with a sink drain / P-trap repair?

Slip-joint washer orientation: nut slides on first, then washer with the beveled/tapered side facing the fitting (away from the nut, toward the joint being sealed) — reversed washers are the #1 cause of trap drips (Oatey install guide).

What's the biggest safety risk to know about before a sink drain / P-trap repair?

Plastic slip nuts: hand-tighten, then max a quarter-turn with pliers; overtightening cracks nuts/strips threads. (Oatey)

Sources

https://www.oatey.com/resources/project-guides/how-install-p-trap
https://www.oatey.com/faqs-blog-videos-case-studies/blog/what-p-trap-and-how-does-it-work
https://up.codes/viewer/florida/fl-plumbing-code-2023/chapter/10/traps-interceptors-and-separators
https://up.codes/viewer/florida/fl-plumbing-code-2023/chapter/7/sanitary-drainage
https://support.insinkerator.com/app/answers/detail/a_id/577/~/installing-a-new-garbage-disposal

This guide is general informational content, not professional or legal advice. Codes and county rules change — confirm permit requirements with your local building department, and use a licensed professional for electrical, gas, structural, or main-line plumbing work.

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