LOS ANGELES — The Studio City house used for exterior shots of “The Brady Bunch” was designated as a historic-cultural monument Wednesday by the Los Angeles City Council. The recommendation, approved by a 13-0 vote by the Los Angeles Cultural Heritage Commission, grants landmark protections to the 1970s-era home on Dilling Avenue in the San Fernando Valley community. The house was used for scene-setting exterior shots for the 1969-1974 sitcom, which gained a second life in syndication. Most of