Scranton Business Park. Scranton Business Park is where the Dunder Mifflin Scranton office (the main setting of the show) is located. Its address in the show is 1725 Slough Avenue in Scranton, PA. The place/street itself in Scranton doesn't actually exist, as the address is actually a reference to the British version of The Office, which is set in Slough, England. The real location of the set building is 13927 Saticoy St Panorama City, CA 91402.