4th Am. does apply to housing and code inspections. Although inspectors were not required to have warrants, some kind of PC was necessary. Ct. adopts “flexible probable cause.” This standard is based on reasonableness weighing the gov’t interest against the individual’s privacy interest  this leads to the adoption of administrative search warrants
-    state must show that reasonable legislative or adm. standards for conducting an area inspect are satisfied w/ respect to a particular dwelling.
-    warrants not going to look like trad. search warrants; only going to make sure “neutral and detached
magistrate” approves warrant, moving away from PC; inspectors not ltd to certain areas were PC exists, can look anywhere, anytime