YVES BÉHAR IS MARVELING AT HIS ELECTRONIC TRAPDOOR.

WE’RE IN THE FOURTH-FLOOR MASTER BEDROOM OF HIS MODERN SAN FRANCISCO HOME, A STACK OF LOFTLIKE BOXES WITH FLOOR-TO-CEILING GLASS WINDOWS, WHICH HE SPENT FIVE YEARS METICULOUSLY CRAFTING. IT’S A HAZY SUNDAY EVENING IN LATE JUNE, AND BÉHAR, WHO IS WEARING JEANS AND A “STINSON BEACH” T-SHIRT, HAS JUST RETURNED WITH HIS FAMILY FROM THEIR WEEKEND SURFING RETREAT IN MARIN COUNTY. TWO OF HIS FOUR CHILDREN (NAMED SKY, SYLVER, SOLEYL, AND SAYLOR) SOMERSAULT ON THE UBALD KLUG SOFA SET