2,132 Sq Ft. 514 Sapphire St, Petaluma, CA 94952. This to-be-built home is the "Plan 2132" plan by KB Home, and is located in the community of The Sterling Hills at Quarry Heights. This Single Family plan home is priced from $963,990 and has 4 bedrooms, 2 baths, 1 half baths, is 2,132 square feet, and has a 2-car garage.