Buying Rural Land? Check If the Septic System Is Permitted

Once you're past the city sewer line out here, the house runs on its own septic tank, what the rules call an on-site sewage facility, or OSSF. Texas doesn't let anybody drop one in the ground, or do a big repair on one, without a permit and an approved design plan first. In Cameron County that whole process runs through the county's own local office instead of the state, so you're dealing with a window in the Valley, not Austin.

Where this bites is closing day. Somebody surveyed the county a while back and found pockets of older systems scattered around, some of them likely failing, and an unpermitted tank doesn't show up at the title company. It just becomes yours the minute you sign. So make the seller produce the permit and a clean inspection before you do. Fixing a bad system can climb into real money, and that's a bill the last owner gets to leave behind for you to find.