Photo By Mikiko Kikuyama

A Modern Approach

With a price tag of $29.8 million, San Francisco's Residence 2646, built by Troon Pacific, comes with a luxe feature or two including a garage-level car vault, LEED-platinum certification, advanced air-filtration systems and building materials and finishes that avoided "red-list" (worst-in-class materials in the building industry including asbestos compounds, BPAs and formaldehyde, among many others) chemicals. Oh, and for more prosaic tastes, the six-bedroom, eight-bathroom five-level home also boasts stunning views of the San Francisco Bay.