Do I need a permit for bathroom remodel in Tarrant County (Unincorporated)?

It depends. Whether bathroom remodel needs a permit in Tarrant County (Unincorporated) comes down to the details of your project.

Texas Occupations Code 1301.551 requires every city of more than 5,000 people to regulate plumbing and to require a permit before plumbing work. The only listed exceptions are repairing leaks and replacing faucets, ballcocks or water control valves, garbage disposals, and toilets. Tiling, painting, cabinets, countertops, and similar finish work are exempt from a permit under Section R105.2 of the 2012 International Residential Code that Texas adopts. Moving fixtures, adding a circuit or fan, or moving walls is not on that list. A homeowner may do plumbing in their own homestead without a state plumbing license (Occupations Code 1301.051), but the city permit and inspection still apply where the city requires them. When remodeling work requires a permit, Section R314.3.1 of the 2012 code requires smoke alarms throughout the home as for a new dwelling. Plumbing-only and mechanical-only work is exempt from that rule. This remodel moves plumbing, adds a tub or shower, or changes wiring, exhaust venting or walls. Like-for-like fixture swaps are the part of a bathroom remodel most often exempt; moving pipes and new wiring are not. Plumbing and electrical work each normally need their own permit and rough-in inspection before the walls are closed, so schedule inspections before drywall or tile backer goes up. Bathrooms have specific electrical safety rules, such as ground-fault protection on outlets, which the electrical inspection checks.