Yeah, it was filmed in Mobile and while they were filming in '76, I was in a wedding in Mobile and while I was in town I visited the house of another couple who were in the wedding. They lived on Carlisle Drive East and they said,"Guess who's living next door? RICHARD DREYFUSS!" I guess Spielberg wanted THE ROY NEARY HOUSE (Dreyfuss' character in the movie) to be as realistic as possible so he had Dreyfuss and his family move into it during shooting. I was TRIPPIN' the first time I saw Close Encounters in '77 and that damn house popped up on the screen, I hollered out loud,"THAT'S THAT HOUSE NEXT TO THE ONE IN MOBILE!" https://maps.roadtrippers.com/us/mobile-al/points-of-interest/home-from-close-encounters-of-the-3rd-kind