We're not talking about homeless adults, we're talking about the most innocent of lives.
We're talking about when it would be justified to deprive one person of their rights for the sake of another person's life.
Reframing this in terms of homeless adults takes all question of personhood out of it: everyone in this conversation agrees that a homeless person is unquestionably a person. Whatever rights are attached to personhood, a homeless adult has them.
... and from your response, it seems like you disagree with the idea that your
property rights should be considered less important than someone else's right to life.
Now you bring up this thing about "the most innocent of lives;" are you trying to suggest that a quality like "innocence" should dictate how entitled we should be to our rights?
... not that it matters, because if fetuses are what you value above all else, we can think of scenarios where it's a fetus's life that's being balanced against your rights. For instance, would it matter to you if the homeless adults are pregnant? If adults AND fetuses are at risk of dying in the cold, would
that supersede your property rights?