Do I need a permit for shed or accessory structure in Edinburg?

Most likely yes. Shed or accessory structure usually requires a permit in Texas. Confirm the specifics with Edinburg.

Many Texas cities exempt small accessory buildings. Dallas, for example, exempts a utility building under 200 square feet with no electrical, plumbing, or gas on single-family or duplex premises, but running utilities to a shed or exceeding the size threshold triggers a permit. Zoning setbacks and easement restrictions still apply even when a building permit is not required, so verify placement with your local building department. Edinburg's Residential Permit and Review Process guide lists a separate Portable Building Permit, reviewed by Building Safety, the Fire Department and Planning and Zoning, with a Certificate of Completion issued after inspections. UDC Sec. 2.206.E allows one storage building per residential lot, no larger than 144 square feet on lots of 10,000 square feet or less and 256 square feet on larger lots. A bigger shed needs Limited Use approval. Central heating or cooling is not allowed, and utilities are limited to a sink, toilet, door opener and one inside and one outside light. Under UDC Sec. 2.206.D, a freestanding accessory building cannot sit in front of the house, in a required front or street side yard, or in a utility easement. On lots under 12,000 square feet with no alley, the rear setback is five feet or the utility easement width, whichever is greater. Shipping containers, semi-trailers, manufactured homes and dumpsters may not be used as storage buildings in Edinburg (UDC Sec. 2.206.E).