Skip to Content Ruling is a blow to property rights Supreme Court of Canada in Ottawa March 4, 2026. /Postmedia You probably know that police need a warrant to enter your house or back yard, barring an emergency like someone screaming for help from a bedroom (known as exigent circumstances). You probably also realize that, despite this warrant requirement, police sometimes walk up your driveway, knock on the door and start asking questions. Sign In or Create an Account How can that be?