marisa94 said: "Hey! I am traveling to San Francisco to see the National Tour of Flasettos and cant seem to find online anywhere where the stage door is."
The actual street is Golden Gate Avenue. Maybe 100 yards up from the theatre entrance, which is at 1 Taylor street. Unlike NYC and other big cities there is usually no big crowd post-performance.
You can also Google "golden gate theatre address" and a map will come up on the right side of the Google page. Click on it and click again to enlarge and you will see details of the theatre location. It's rather tricky because both Golden Gate Ave. and Taylor Street meet at Market Street.