ETJ Land With Septic Still Needs County OSSF Review

Much of Collin County growth sits in a city ETJ, or extraterritorial jurisdiction. A tract inside an ETJ may go to that city for platting instead of the county.

The county still has a role when septic is planned. Collin County Development Services must complete an OSSF suitability review before the city runs its plat review. Without that septic step, the city plat can stall.

Near McKinney, Princeton, Celina, Melissa, or Wylie, a buyer may be dealing with both offices. Ask the city and the county which reviews apply before dividing land or promising lots.