A house in the wine country can hardly be called a welcoming retreat when its master bedroom and bath occupy dark dormer spaces. That was the case inside this 1990s-era bungalow when a San Francisco couple purchased it, along with a working vineyard, in Calistoga, California, to launch their boutique wine label and enjoy weekend escapes from the city. But to make that happen, they needed Bohlin Cywinski Jackson (BCJ) to renovate the property’s 4,430-square-foot house.