1. I have never used a mod, nor do I have/use any CC
2. The lot traits are Homey, Good Acoustics, and I think Natural Light or something like that
3. I do not want to set the lot to a private dwelling
4. I have my locks set to "locked for everyone but household"
5. The sim who entered the house is a randomly generated "townie" sim who is not known to any of my other sims
6. The sim who lives in the house lives alone
7. The sim who entered the house does not live in/on any of the houses on any of the lots
@Purrpledrank Please run a game repair [ Open Origin, click 'Game Library' then right-click Sims 4 > Repair Game ]. Make sure to let it run until it has completed all repairs (it will do the base-game first, then run through each of your expansions/packs)
Please see if you can get the Sim to join your household. You may need to bring the relationship up higher to get that option. Then you will be able to control them - or delete them.
What is the name of the townie? Are they still on the lot if you close the game without saving? Maybe they will be gone, and had just glitched out.
