"Probable cause" isn't even enough - all that does is let police go get a warrant. To enter a house without needing a warrant (without the resident's permissio

"Probable cause" isn't even enough - all that does is let police go get a warrant. To enter a house without needing a warrant (without the resident's permission), the situation needs to be much more compelling than just probable cause. For example, if police are in the middle of pursuing someone and they see that person flee into a house, then they can enter it immediately. See https://en.wikipedia.org/wiki/Exigent_circumstance https://en.wikipedia.org/wiki/Exigent_circumstance