Remember a lot of people in the US are in single family homes detached from another home. When I lived in a condo or apartment they could other leave a special key for big boxes in your normal mailbox. You would leave the key in the special mailbox for later. Or they would put it in your rental office. Large condos will have a concierge that will handle it for you.

Usually UPS will put it somewhere out of sight if they think it will be an issue.