A couple of sim days after moving my sim to a new homeworld using the Traveler method, I accidentally missed the dance barre and clicked on the wall of the house instead. I got three options, NRaas, Real Estate..., and something else I don't remember. When I clicked on Real Estate... to see what would come up, the options were to build on the lot, buy on the lot, or make the property a resort. When the bills came a few days after that, they were much higher than I expected them to be. I checked the household status, and found that it listed over $160,000 in real estate holdings, even though the only real estate they left behind was a vacant lot worth $600, which I had moved them to prior to having them leave their previous homeworld. The only real estate they owned in the new homeworld was a small houseboat worth less than $16,000.

I had my sim check real estate, and found they were listed as having a vacation home, with no address, worth a little over $144,000, which is about how much the home they are now living in cost before I unpacked the household inventory they had brought with them. Thankfully, they still own their home after I had my sim sell the non-existent vacation home, and only the the houseboat is now listed as owned real estate.

Is it a normal occurrence for this sort of thing to happen when a household changes homeworlds? Or should I be concerned about possible corruption?

Are you playing in Isla Paradiso? Finding the hidden islands will give you those options.

No, I'm playing in a custom world, Legacy Island III, by RFlong. It's an island world, and while there may have been a few hidden islands, I unhid them while editing the world for this game. It's been long enough ago that I don't remember for sure, but I suspect there probably were, because she put in pretty much everything anybody would ever need for whatever goals they want to reach with their sims. My sims' house is on the main island, and those options came up when I clicked on the walls of the house. I probably clicked on the ground outside the house too, when I was trying to figure out what was going on, but it's been long enough ago that I don't remember whether the options came up then too.

Yes that world has hidden islands too, so I am guessing that's why you're getting the "build, buy, resort" prompt when you click. If that island has spawners on it, too, then the property values will include those items that spawn there.

I opened a new instance of the world and placed one sims there in a small house. I had her buy the lot in question as an additional home. I clicked on the wall of the house and got those same options. I had her move to the house, and the options disappeared. So apparently, the issue is that when I changed it to their new homeworld it didn't remove the lot's designation as a vacation home, but simply added the new designation as their home, on top of that information. Something like that, anyway.

So now I need to know whether this was a glitch, that the change of homeworld didn't work quite right this time, and I need to go back and try again, or if having my sim sell the phantom vacation home fixed the issue. If this is something that could corrupt my game, I am not willing to take that chance.

You used the move home world function or change home world after they arrived on a vacation? Had they ever been to this world and did they own the home as a vacation home prior to this? If you used change home world, did you forget to save and reload after doing that? Sometimes things linger until that is done. If you had, or you used the move home world function, can you list me out the exact steps you took when moving them to encounter this?

Overall this doesn't sound serious though, just some lingering data.

My sims had never been to this world before I moved them there. What I did was to edit the world, add in a base camp, among other changes, save it, then transfer the nhd file into my game save. I had also placed a temporary active sim in the world so that I could set all the mods as I want them to be in my games. I do this with every world I edit before using it, so I don't have to repeat the mod settings every time I start a new game in it. I also set the seasons the way I wanted them. So in this respect, it wasn't an untouched world. Although my active sims never went there before, it wasn't a new instance of that world.

Then I had my sims move to the smallest vacant lot in their then-current homeworld, so they wouldn't have as much to lose when the homeworld change wiped out all of their property ownership there. Once they were all on the new lot and the move completed, I sent them to the new world on vacation. When the household had finished arriving at the base camp, I saved and quit.

When I re-opened the save, I changed the lot I had added for them to move to, to an ownable lot. Then I had one of them buy it as a vacation home. Once they had all arrived on the lot and stopped, I used Traveler to change it to their homeworld, then saved, quit, and restarted the game. Of course, each time I quit, I always deleted the cache files before re-starting.

Since then, I ran a test game, changing homeworlds to the same island, then to IP, then to another world I had made in CAW from Sunset Valley, which already had a base camp. So that one was an untouched world. But the same issue happened every time.

There is one thing that is different with my game now than for most of the years I played it. Up until last summer, I was still playing on Windows 7, on my desktop computer. Due to issues with internet security programs corrupting my games soon after starting them ever since an update, I quit playing on my computer, and am now playing on my laptop, which is running Windows 10. My son told me that as long as Windows firewall is up to date, I don't need another program, and of course it isn't on Windows 7. I wouldn't expect the OS to make any difference, but some things within the game are actually working very differently than they did when I was playing on Windows 7.

The most obvious difference is that even though I set Woohooer to raise the chances of pets on free will woohooing and trying for babies on their own, they would never do it. If I wanted my sims to raise horses, puppies, or kittens, I had to make the mated animals woohoo. But the very first time I played with a household with a mated pair of cats on Windows 10, they were going into the pet house ALL.THE.TIME! The female got pregnant the very first day, and once the kittens were born, within sim minutes, they were trying for another litter! I thought maybe it was a fluke, but soon afterward I played with a different household and a different mated pet couple, and they did the same thing. I had to put the pet house in the household inventory to prevent them from constantly woohooing. I don't know how the OS could make a difference like that, but it's happening.