Jeff Wardell and Claudia Sagan are not laid-back. When the San Francisco couple says they love to travel, they don’t mean trips to Napa. Over the past three summers Wardell put 15,500 miles on a motorcycle he and Sagan keep in Milan on rides from the Arctic Circle to southwestern Portugal. When Wardell began collecting street art in the mid-1990s, he admits, “it quickly became an obsession.” When he began dating Sagan several years ago, “we got serious about buying big.” Starting with local graffiti artist Barry McGee, they bought ever-more ambitious installations by stars like Shepard Fairey, JR, and Os Gemeos—until they needed a bigger home to accommodate their approximately 120-piece collection.

In February of 2007 they purchased a 3,200-square- foot former Chinese laundry and tooth-powder factory with column-free interiors and a zigzagging sawtooth roof in lower Pacific Heights. As a former VP of real estate for Williams-Sonoma, “Claudia knew right away it had excellent bones,” says Wardell, a former financial advisor. The travelers also loved how the 127-foot-long loft seemed to stretch out to the horizon. “I walked up those front stairs, and I felt like I was at the edge of a highway, like I could keep going forever,” Sagan says. “I loved that feeling.”

Where some might box the cavernous space into cozier rooms, Wardell and Sagan wanted “to cele- brate that length,” Sagan says. The apartment lies on a north–south axis with large windows at either end. To showcase the art and maximize daylight, they decided to situate the master bedroom at the back, away from the street, but keep everything else open, with a central kitchen and living room and a den facing the street. They hired a local company to sandblast the interior to expose the board-formed concrete walls and replaced the carpeted floors with Georgia hickory pecan planks— the longest, knottiest boards they could find—to further lengthen the loft and make it look more like a warehouse. The next question was, “how do we make a home office and a guest bedroom happen without cluttering the space?” Sagan says.

For the guest room, “we wanted something our friends would tell everyone they knew about, but not so comfortable they would never leave,” Wardell explains. He wanted it to be a self-contained space with a Murphy bed, an element he remembered fondly from a train ride he took across Europe in his 20s. After considering plunking the interior compartment of a Pullman train car in the middle of the apartment, they landed on shipping containers.

“I contacted Hapag-Lloyd looking for an orange one in newer condition,” Wardell says. “But they’re German. They have rules. They wouldn’t sell us one, but they put out a call that these nuts in San Francisco wanted containers for their house. In late 2007, we got word that the Port of Oakland had some used ones.” Sagan examined several before choosing. “A ton are just a mess,” she says. “You’ll see a huge dent in the side and go, Wow, a wave did that? It’s important to smell them, too, because they pick up odors from their cargo.”

In 2008, while a container reseller prepped the containers (replacing the original pesticide-treated floors, repainting the walls, cutting out holes for windows and plumbing), a structural engineer and builder reinforced the loft’s floor with wooden joists to accommodate the nine-ton load. The containers arrived by flatbed truck one morning in late July; by midday, a crane had lowered them in through an opening in the roof, cantilevering the blue one, Wardell’s future home office, atop the orange one, the guest room.

For the container interiors, “the mood we wanted was raw,” Wardell says. There was only one caveat: The guest room “had to pass the Dottie test,” Sagan says. Her mother would be their first visitor that Christmas. “She was mortified by the idea of sleeping in a container,” Sagan says. “She said it sounded like a coffin.”

To customize the apartment and containers, Wardell brought in Pat Carson, a furniture designer and builder who shares the couple’s love for travel and industrial design. When asked why his pieces have so many rivets, Carson grins, “I’m that guy on the airplane by the window, staring at the wings.” Over six months Carson designed and constructed 75 custom fixtures for the apartment, many with a kinetic, gadget-like charm. “A lot of the creative ideas I’ve had in the past 20 years are manifested in this house,” Wardell says.

The carbon fiber dining table, for example, opens on a hinge to form a V, an L or a straight line, with ball casters embedded in the legs so it can glide easily. Woven-leather bar stools swivel between the table and the kitchen island. Surrounded by exposed copper piping, the guest bathroom’s teak-and-steel sink evokes the utilitarian atmosphere of a train car or ship cabin; in the master bathroom, tilt-out shelves in the shower hide shampoos. Just about the only convertible fixture Carson didn’t build in its entirety is the liquid crystal “privacy wall” in the guest bath, which changes from clear to opaque at the flick of a switch.

Shortly before Dottie arrived, Carson installed the custom Murphy bed, which is clad in aluminum with dozens of rivets and rolls up on a pulley made from a mill wheel. The unconventional guest room passed with flying colors. “She was pleasantly surprised at how spacious and comfortable it was,” Sagan says. It’s been a hit with subsequent guests as well. “We’ve found the container self-selects,” Wardell says. “Our friends who are the most fun choose to stay here.”

If you’d like to incorporate shipping containers into your house—or build a structure entirely out of them—these architects and designers are good resources:

Robert Humble and Joel Egan, HyBrid Architecture, Seattle, Washington

Their prefab Cargotecture homes incorporate shipping containers, with prices starting at $29,500. They also consult on D.I.Y. projects. Hybrid Architecture

Prefab Logical Homes, some incorporating shipping containers, start at 160 square feet for $25,000. Logical Homes

Ada Tolla and Giuseppe Ligano, LOT-EK, New York, New York

Pioneers of the field, they use containers to build offices and residences around the world. Lot-EK

Jennifer Siegal, Office of Mobile Design (OMD), Los Angeles, California

Siegal integrates containers into homes priced from $230 to $280 per square foot. In 2013, she will launch a line of Take Home container homes, with prices starting at $100,000. Office of Mobile Design

Geoffrey Warner, Alchemy Architects, St. Paul, Minnesota

Builds containers into his custom projects and offers prefab wooden weeHouses starting at $79,000. WeeHouse

Adam Kalkin, Quik House, Bernardsville, New Jersey, and Paris, France

Known for high-concept designs, including a three-bedroom $119,000 Quik House made from six containers. Quik Build

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