This weekend's featured open home is 5630 Margarido Drive in Oakland. Hosted by Helen Nicholas of Alain Pinel Realtor's Montclair office, this elegant Claremont Pines home features a grand-scale living room and dining room, cozy library and breakfast room. Huge game room with wet bar. Vistas of golf course, bay, Mt Tam and the city. Veranda and garden entry. Ironwork fixtures, terracotta tiles, refined details throughout. Near BART and College Ave shopping. Open this Sunday from 2:00-4:30 pm.