Yes. Sherman requires a permit and inspection for every new fence, and a repair needs one only when new posts go in. Residential fences top out at 8 feet along side and rear lines and 4 feet in front yards. County land outside town needs no fence permit.
More detail
Sherman spells this out in two places. The city's published list of required permits says a fence permit is required for any new fence construction and that repairing an existing fence needs no new permit unless new posts are placed, and the zoning ordinance (Chapter 14, Section 14.04.004, as adopted in December 2022) sets the rules the inspector checks. In residential districts, no fence, hedge, or screen may exceed 4 feet in a front yard, and a front-yard fence must be decorative with openings in at least half its area, so chain link and woven wire are not allowed there. Side and rear screening fences may reach 8 feet and must be solid, built of wood, stone, brick, concrete block, or similar residential material. Nothing may stand in the 25-foot sight triangle at a street intersection or the 10-foot triangle where a street meets an alley, electric fences are prohibited along streets, alleys, and common property lines, and metal panel fences are not permitted in any district. On agricultural property over 2 acres, line fences for livestock are allowed in customary farm materials, though poultry netting or welded wire on T-posts is not accepted as a line fence, and vehicle gates must sit at least 20 feet back from the property line. The city's engineering manual adds easement rules: a brick or stone fence in an easement needs an Easement Use Agreement, and no fence may go in an alley right-of-way. The model residential code would exempt fences up to 7 feet, but Sherman's local list requires the permit anyway, so check the rule in Denison, McKinney, or Durant before assuming theirs match. HOAs and lake communities such as Lake Kiowa layer their own approvals on top. On unincorporated Grayson, Cooke, Fannin, Bryan, and Marshall county land there is no fence permit, so the survey line and Texas stock law set the practical rules, and 811 locates apply everywhere before an auger turns. The fencing and gates service in Sherman carries the permit and inspection inside the scope, the post spacing FAQ covers how the fence should be built, and the pipe fencing and entry gates post covers rural frontage.