In Sherman, yes: the city requires a demolition permit for interior demolition during a remodel, plus a building permit when new framing, wiring, or plumbing is involved. A load-bearing wall also needs an engineer-sized beam. Denison, McKinney, and county land each follow their own rules.
More detail
Sherman's published list of required permits is unusually direct: a demolition permit is required for any demolition, including the internal demolition for a remodel, and a building permit is required for any residential addition or remodel that involves new framing, electrical, plumbing, or mechanical work, with the trade subcontractors pulling their own permits. Replacing a wall with a beam and posts is new framing, and moving the outlets, switches, or plumbing inside that wall brings in the trades. Whether the wall is load-bearing decides how much engineering the job needs. Walls running perpendicular to the joists above, walls stacked over a beam or bearing point, and exterior walls are likely carrying load, while interior walls running parallel to the joists with nothing above often are not. Treat that as a starting guess rather than a conclusion, because trusses, point loads from the roof, and earlier remodels break the simple rules. A bearing wall comes out only after a structural engineer sizes the beam, the posts, and the path that carries the load down to the foundation, and in a slab-on-grade house on Blackland clay that path ends at a slab that should never be cut or cored without first locating any post-tension cables. Sherman's local code amendments require engineered shear wall plans for new houses and additions, and removing wall length can change a house's bracing, so the engineer checks that too. Denison and McKinney run similar permit paths under the 2024 codes, and on unincorporated county land there is no building permit, though the structure needs the same beam. Guessing is the expensive path: an undersized header shows up as sagging ceilings, cracked drywall, and doors that stop closing, and it surfaces again at resale as unpermitted structural work. Done correctly, the beam disappears into the ceiling and the new room reads as if it was always open. The structural repairs FAQ covers what else a wall removal can uncover, the kitchen remodel permit FAQ covers the most common case, and the remodeling service in Sherman carries the engineering and permits inside one written scope.