To the OP: per @dtilque’s suggestion about clicking the Pegman to get the lines and then clicking on the line itself to get into streetview (instead of dragging Pegman) – I just did some tests, and if I click very slightly to one side or the other of the line, that’s the side of the street it will show me on streetview. If you zoom in close enough on the map to see the house numbers, that can help you get the correct side of the street the first time.