Happy Donuts (multiple locations on the Peninsula) has (mediocre) coffee 24 hours. It's not Philz but it's a place to go. There's also Heidi's Pies in San Mateo

Happy Donuts (multiple locations on the Peninsula) has (mediocre) coffee 24 hours. It's not Philz but it's a place to go. There's also Heidi's Pies in San Mateo but that's a 30 minute plus drive from the south bay. Coming from the east (Michigan) I have been a bit disappointed by the dearth of 24 hour anything in the bay area. Particularly things like grocery stores and Target. This is complete speculation but I wonder if it has to do with the fact that a lot of places in the northeast (NYC included) have a history of round the clock shift work in manufacturing.