You can actually get their house, family (with house)
But be aware if it has Custom Contents, Missing files could resurface.
By doin that, Please go to " UserData " Or " UserData# " The one who had no number is Neighborhood 1, counted as 1.
"You can copy the whole UserData If the GAME is corrupt, If you copy the UserData Folder and it still crashes or some error occurred like freeze, then you could just copy the family that is not in the lot who possibly has URNS and THOMBSTONE, like the Goth, GothSr families, if these families are in an original lot where they used to and you think or you know you delete the Urns and Thombstone then don't get them (Don't harvest .fam files))
If you delete the urns and grave, sometimes it corrupt but you can save the family. (I Did that and it crashes the game, Not sure if because of Missing Drivers)
The family will be relocated at the house or at the Create Sim area, the last time you put them will determine their place.
Missing object occurs if the content are not available in the game, possible you have a not put the required downloadable contents, missing Expansion Packs or corruption in the game itself by unreadable or missing object on the application itself.
The file is .FAM and put them on Import folder or create one if it didn't exist yet.
The Location Of Family (.FAM) Files (To Be Exported and deliver to possible receivers)
"C:\Program Files (x86)\Maxis\The Sims\UserData\Export"
Btw you can also get the lots but you need a picture that has the assigned number so you will know what should you get/put/replace the lot file. That doesn't include family just house or community lot.
I recommend, as long as possible and if you can, use object mostly from maxis and you save all the CC you had in the folder to prevent potential errors in the future.
The Location of Lots (.iff) This lots are named House(##) no space, always two digits (House08, House23 etc.)
" C:\Program Files (x86)\Maxis\The Sims\UserData\Houses "
Oh i forgot, put them into .rar by WinRar so they won't get corrupted and if they are a lot or that family will be placed in a lot, please give a warning and i recomment you name the rar file corresponding to the location number it will be placed, thankyou.