How much hard drive space do you need for Sims 4 Cottage Living expansion pack?

@emower  Cottage Living certainly doesn't take up anywhere near 15 GB, more like 2-3.  (I'd have to check the exact amount.)  But it's best to have much more than that free at all times, something like 15-20 GB, for the overall health of your system.  Having less shouldn't prevent you from installing Cottage Living though—you really only need either the same amount of space as the pack itself takes up or twice that, depending on how Origin handles the install process.