A lot of times when you think of big, detached and stately Pacific Heights mansions you’re really thinking of Presidio Heights homes. Tucked next to the woodsy Presidio, butting up against the Marina with vistas of the Golden Gate Bridge, Tiburon, Marin and the Marin Headlands, this is the Restoration-Hardware-meets-Architectural Digest cover homes. These are the detached homes that are either imposing (on top of a hill) or framed just so. These homes have been redone and done up (the Designer Showcase showdown homes are here a lot of times along with AIA tour homes). So why is this the epicenter of big, well-done mansions? It’s got to do with demographics. The truth of the matter is that many of the homes in Pacific Heights have only just turned over to new internet money. That’s why you’ll run into more porta potties and scaffolding trucks over there than you will in Presidio Heights where you’re likely to run into an embassy or dead-end street.