Occupied condos or vacant condos?
"Private" property that's left vacant is a crime against the right to shelter, and as far as I'm concerned it should be open to squatting.
Squatting in the backyard of an occupied house when there's thousands of vacant houses in every city in America? That's not an action I would agree with, and that's also not what the average unhoused person would do, if for no other reason then because it's much riskier for them than squatting in a public space or a vacant house.
There's no epidemic of entitled dangerous homeless people setting up camp in innocent families' yards. And I certainly wouldn't generalize all homeless people as threats to people's homes.