Property is 2 houses on one lot, NOT a duplex. And I found it on Redfin, oddly enough he had taken it down from the site he had it listed on but it didn't get cleared from the aggregate sites. I was specifically looking for properties that had been active for a long time, this will sound weird but my thinking is this: when I go to outlet stores I always look at things that are NOT my size because some items just have off-sizing so people who are a small like me fit them, but anyone looking at their size (like a large) won't fit. So I was looking for the oddballs where maybe the SF didn't match county records or the price looked ridiculous, but then you read the description and find out it's two houses, or the house and adjoining chunk of land. I also look for 1033 exchanges because they're usually motivated to make the deal happen (time constraints). So I was looking for mislabeled or motivated properties. I bought my last few primary residences this way and, except this last one that I HAD to have due to it fitting everything that I want and need, have made money on them above appreciation when selling.
If I sell my perfect place I'm in now I'll still make money, but I love it here and don't ever want to move :)