Depends on the property...if it's suitable for pets then I think it's unreasonable to not allow pets. I've often seen 'family' homes advertised....great for the family, they say....plenty of room, they say, fully fenced, they say....but no pets! Ummmm your market is for a family to live there....but they can't have pets? That's just silly to me. That means that a poor family have to get rid of their pets or hope they find a house that allows pets...that's a bit sad.