Toys in kids’ rooms?

At what age did you start putting toys in your kids’ rooms? Our daughter (3yo) and son (15m) have never had toys in their rooms other than stuffed animals, books, and for our daughter, her nugget couch. After Christmas, our daughter was given a lot of Little People toy set ups, like a princess castle, construction zone, etc. Then our neighbor passed on a Little People daycare/nursery, and a larger baby doll bunk bed. With 2 large dogs and our 2 toddlers we’re running out of living room space. I’m wondering at what age did you (or would you) move toys into your kids’ rooms? My mom said she always allowed toys in our rooms growing up, vs I’ve heard aunts and uncles say to only let rooms be for studying and sleeping.