I faced the save corruption twice at the beginning and I had to rebuild from a before for rent save twice. I only have 13 residential rentals currently, and that seems to me key in my game, as when I tried to make another block of townhouse was the last time the bug kicked in.
Everything has been pretty ok. I don't play the residential rental much, just in case, waiting for the fix, but I do go in and check up on the families fix the houses and maybe play a little. Not wanting to test it too much as those builds and getting the families in was a very time consuming and I don't want to do it a third time. Holdign off for the save update and when everything is clear.
I was avoiding Tomarang for a while, and all the houses there are plain residential. I played exclusively in Tomarang last weekend, and pretty much everything seemed ok with the exception of a few crashes for no reason, a couple of lost of control of ui , (better execptions found the culprit was a mod by mapbell-more kisses), and the one scary bug I was afraid of, one house - the most north on the map of the island on the east, when visiting I could not knock on door.
https://i.imgur.com/eFh2iUx.jpeg
only option I had was move in household from gallery & I tried many times. There is a family that lives there &Playing that house works find. It's a regular residential lot I found off the gallery, with lots of downloads and likes, and it dated prior to the release of For Rent, so I don't think the lot is the issue.
I checked my maps and they all seemed ok and not corrupting, paying most attention to the main street area of Willow Creek. While that issue has occurred prior to For Rent, with lot, the pool in Windenberg. I had the same issue with the pool in Windenberg this weekend as well. I just replaced the lot with another lot I wanted to used temporarily but I want to see what is going on with that pool lot as I put a lot of effort renovating it.
It's safe to play, but always back up your saves, and monitor you game and maps. Save corruption has happened to others before For Rent, and the help specialist say they are not responsible and you must back up your saves for your own insurance.
Since this I have been trying to play in a more productive way, where as is any save corruption should occur I am somehow backed up. Like playing to complete renovations and putting them on my tray file, aka private gallery. Even toyed with the idea of backing all my creations on the public gallery, as tray corruption is possible too. So you want to back that up. My folder is pretty big. Also the story developments, screenshots folder could be backed up too. Back up on you computer and externally whether a hard device or in cloud somewhere.