While the exterior shots are filmed in LA, the show establishes Paddy's as located in South Philly. A street sign visible in this episode reveals the theoretical location as near 3rd and Dickinson Streets, specifically showing "200 E 300" on Dickinson Street. The 200-300 block east doesn't exist (it'd put Paddy's in the Delaware River), but the equivalent west range "300 W 200" does exist at this location at the intersection of Dickinson & Moyamensing. It's likely the sign was made by a prop department, and this was actually filmed in LA. We included it for a nice bit of Sunny trivia.