I believe so. But as suggested, add it to your game and start a fresh game (I usually use Sunset Valley - an oldie but very stable). Play around with any family. Have them do something with everything in the house (this is kinda like testing a house build before you put it on Shop and Swap). Have them cycle through 24 hours just to make sure beds are all working, etc. Also, if you pick a family that already has a job, you can check that they go to work properly. Once all that checks out, you can exit that game without saving (was just a test) and proceed with your regular game. If anything goes wrong in the test, then remove the mod. But since you never started one of your saved games with it installed, those games are safe. I hope this helps.
