City Limits & ETJ
City rules reach beyond city limits into the ETJ
Land just outside Greenville and other Hunt County cities may still fall under city subdivision and development rules through an area called the ETJ.
Texas law gives cities control over land just outside their borders. That area is called the Extraterritorial Jurisdiction, or ETJ. The city can set rules on how land is divided and what gets built there. The land is not inside the city. You do not pay city taxes. But city rules still apply.
If you are buying land near Greenville, Commerce, or Quinlan, check whether the property is in that city's ETJ. ETJ rules affect what you can build and how lots can be split. Call the city planning office or the county to find the current ETJ boundary.
Source to confirm: Texas Comptroller — Hunt County Directory