The new Walking Dead spinoff (yet to be titled) will be filming on the west coast. The Walking Dead is set in Atlanta, Georgia, and it was known the spinoff would be in a different setting, but hasn't been revealed until now.
According to TV Line, the Walking Dead spinoff pilot will be shot in Los Angeles. AMC promised a new location from Atlanta, Georgia and earlier this year AMC President Charlie Collier said, “Almost from the beginning of The Walking Dead (which is set in Atlanta), fans have been curious about what is going on in the zombie apocalypse in other parts of the world.”
It's possible that LA is just a cover for another location, and the show is rumored to potentially be a prequel, similar to Breaking Bad and Better Call Saul. The prequel would tell the story of a spreading epidemic and the effort to contain it.