The state file is the first pass: licensing authority, reciprocity posture, workers' compensation threshold, bond notes, and renewal rules. It should not be treated as the final filing answer for a job site.
Start with the trade agency for electrical, ACR, plumbing, or specialty work, then confirm the city or county permit desk before bidding.
Primary licensing body
Texas Department of Licensing and Regulation; Texas State Board of Plumbing Examiners is the main statewide reference point for this file. County and municipal departments may still impose separate registration, permit, insurance, inspection, or bond requirements.