Holger Arnold’s new home, a 1909 San Francisco fire station that had been converted into a residence after being decommissioned and sold at public auction in the 1970s, was loaded with character and square footage. The problem was that Arnold had no furniture to put in the five-level dwelling. “After six months, I bought a chair to sit on while I watched TV,” says Arnold. Outfitting the historic firehouse was nothing short of a small emergency. Ex-police-officer-turned interior designer Kristina Wolf turned out to be just the right person for the job. “I use all my old police skills in my interior design business,” says the 27-year police veteran.