I am very sure that the OP meant no harm, but Google Maps is one thing, an actual drive-by that is deliberate is another. As someone else said, therapists deserve privacy too. On the internet (Google Maps) there is little expectation of privacy, in one's home there is.

I understand the impulse to do a drive-by but it needs to be recognized that this could affect someone else deeply. I had a student who used to drive by my house regularly, deliberately, out of her way. I eventually noticed that the same car kept driving slowly by, usually in the evening when I'd be out doing yardwork. I was getting somewhat alarmed as the car was not one of the neighbors', until I finally clocked who was driving. While that relieved my anxiety, I spoke to the student about it quite sternly. It took awhile for our relationship - she was an advisee - to recover.

It's not a question of good or bad, right or wrong, honest or dishonest. It's a question of boundaries.