The apartment exteriors from Mad About You starring Helen Hunt and Paul Reiser was filmed on the corner of 5th avenue & E 12th St in New York City.
Apartment interiors were filmed inside a studio in front of a live audience in Los Angeles, California.
Location:
6 W 12th St, New York, NY 10011, United States
Google Maps Co-ordinates: 40.734617, -73.994512