There are certain things that imbue an estate with world-class status. Its location and its ''bones'' occupy that privileged list. This magnificent Spanish Colonial Revival-style Montecito property offers both. Resting on approximately two acres in the affluent community's coveted ''Golden Quadrangle,'' it is perched in the foothills yet is just minutes from the charming Upper Village, schools, services and pristine beaches. Its bones are born of exceptional materials. No expense was spared. Almost $2 million was spent on custom cabinetry and stonework, including native sandstone unearthed and cut on the property. This stone is found accented throughout the home, including in the home's four wood-burning fireplaces. One hundred-fifty-year-old roof tiles were imported from Colombia.