This address is what they used for The Rockford Files. Obviously it looks much different now, but i wondered if it was the actual place the trailer set on the show?

Although the Rockford ad in the paper during the opening says "2354 Ocean Blvd, Los Angeles", this is NOT where the trailer was set in the show. This site/address in Long Beach is a gorgeous historic house built in 1911 on top of a small bluff overlooking the bay on Ocean Blvd. The museum took up residence here in 1957. In the first season the trailer was at 22878 Pacific Coast Hwy. Malibu. Later it was moved to 28128 Pacific Coast Highway, Malibu. At that point the ad was changed to 29 Cove Road Malibu. The official address was on PCH and Cove Road was the little road that went a little ways off PCH to the beachside location where the trailer sat.

Yes

Yes it was