In San Francisco's Fillmore District, some high-density housing is going up. The San Francisco Redevelopment Agency is building 32 units of affordable townhomes and flats as part of the historic jazz district's revitalization. Lucky applicants will be selected on Oct. 19. But some of those applicants were displaced from this now trendy part of town when the district went through redevelopment back in the 60s. And they are supposed to have a head start.