The video above begins by showing the 2nd Street Tunnel that I talked in the previous filming location #3.
Afterwards, you will see Sebastian's home.
I walked multiple times in front of this building and I have never guessed that it was used for the Blade Runner movie.
I found it through the internet. There is a very nice market close to this location with various restaurants called Grand Central Market(a must to try if you are close to there).
I re-watched the movie recently and it was the first time I noticed that Franco Columbu also played inside this movie as the Future Terminator.
Franco Columbu was Arnold Schwarzenegger's best friend and bodybuilding partner.