I know the feeling. I bet this sign went up on a Tuesday.
This is a house around the corner on Illawarra Road that had an open house on Saturday, so we went and had a sticky. Turns out it's a house I lived in for two weeks about fifteen years ago. As I was moving into the house, I noticed a copy uniform jacket hanging on a hook by the front door. I asked my new flatmate whose that was and it turns out her boyfriend was a cop, and he stayed most nights. That hadn't come up when I was deciding whether to move in! I immediately started looking and was out two weeks later.