Grapevine Placement Agency 1370 Trancas St, Napa, CA94558 Grapevine Placement Agency is a domestic staffing agency based in Napa. The agency serves clients in the North Bay…More region. Grapevine specializes in placing childcare and household professionals in private homes and estates. This includes hands-on matching of domestic staff and nannies with families, on-call services and providing nannies for private events and out-of-town guests. All of Grapevine's personnel are English speaking or bilingual and have had extensive background checks. For further inquiries, phone Grapevine Placement Agency.