I would absolutely let them move in. Their eviction was from 6 years ago. It’s completely irrelevant now. We only screen for evictions over the past two years, and only then for renting (or RTO-ing) our homes.
Any tenant who owns their own house has distinguished themselves as being a ‘cut above’ those that are renting. Home owners are the most valuable tenant you can have in a community. They are financially stable enough to be an owner, which is terrific. Also, remember, you have the house as your collateral. If they don’t pay, you evict and put a lien on the house.
Further, it is (nearly) impossible for a homeowner to do damage to the only skin you have in that game - the land. It would be a completely different story if you were renting a house to them; that they could damage in addition to not paying rent. But your only real downside with a homeowner is a couple hundred in lot rent (vs., say, $600 in home rent), and very little downside for ‘damage.’
So absolutely let them move in. Of course enforce strict no-pay, no-stay, lien their house if you have to. But I don’t think it will come to that because they’ve obviously had their life together for the past 6 years.
Your mileage may vary.
If you really don’t want them, tell them to move into one of my communities with their large security deposit, er, I mean ‘house.’