City vs. County Jurisdiction
The City's ETJ Reaches Beyond Its Official Limits
El Paso has an ETJ — a zone just outside city limits where some city rules still apply to land development.
El Paso has what is called an Extraterritorial Jurisdiction, or ETJ. It is a strip of land just outside the official city limits. Your property may not be inside the city. But if it sits in the ETJ, you may still have to follow certain city rules when you split or develop land.
This matters for permits, hooking up utilities, and possible future annexation. You can look up any address on the City of El Paso's online zoning map. It will tell you if the property is inside the city, in the ETJ, or fully in unincorporated county land. If you are buying land outside city limits, check its jurisdiction status before you close the deal.
Source to confirm: City of El Paso Planning and Inspections — FAQs