I had a lot under contract that looked like an easy flip. Clean, dry, road frontage, priced right. Then a buyer asked me one question I couldn't answer: "Has it been perc tested?" For anyone newer, a perc test tells you if the soil can support a septic system. No sewer hookup on rural land means no septic means no house. And no house means most of your end buyers walk. I didn't know the answer, so I lost momentum with that buyer while I scrambled to find out. Turns out half the parcel was low and questionable for septic. Still sellable, but to a much smaller pool, and at a lower number than I had in my head. The lesson isn't "always order a perc test." The lesson is that you have to know what your end buyer is going to check before they check it. If you can't answer the buildability question, you're not pricing for the end buyer, you're guessing. On rural land, before I lock anything up now, I want to know three things: is there legal access, can it get water and septic or sewer, and is anything on it flood or wetland. Those three answers decide who your buyer is and what they'll actually pay. Active listings are the competition, not prices. But a buildable lot and an unbuildable lot at the same price aren't even in the same competition. If you've got a lot you're unsure about, drop the county and acreage below and I'll tell you what I'd want verified before making an offer.