A brand-new, 4,870 square foot abode in Cow Hollow that replaced a modest Marina-style home has hit the market asking $6.6 million. When the property, which is half a block from the Presidio's Chestnut Street gate, last sold back in 2009, it housed a very livable 4-bedroom home built in 1924. In the five years since the sale, a new house has risen. It features Palladian windows, a wood and glass roof deck, 5 bedrooms that each have an ensuite bathroom and a media room. The open floor plan main level includes a great room centered around a modern kitchen. A garage will fit two cars with room for extra parking in the driveway.