written by:
photos by:
March 5, 2014
Originally published in The Great Outdoors
as
Hillside Haven
For her largest commission to date, a young San Francisco architect channels Tadao Ando to create an outdoor room for a couple in the Berkeley Hills.
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  A maple tree grows through an ipe deck in the garden that Mary Barensfeld designed for a family in Berkeley, California. A reflecting pool separates it from a white-granite patio, which is furnished with a Petal dining table by Richard Schultz and chairs by Mario Bellini.

    A maple tree grows through an ipe deck in the garden that Mary Barensfeld designed for a family in Berkeley, California. A reflecting pool separates it from a white-granite patio, which is furnished with a Petal dining table by Richard Schultz and chairs by Mario Bellini.

  • 
  Board-formed concrete retaining walls double as ramps from the deck to the garden’s highest point.
    Board-formed concrete retaining walls double as ramps from the deck to the garden’s highest point.
  • 
  A small terrace outfitted with an H55 easy chair by Björn Hultén offers a view of the San Francisco Bay.

    A small terrace outfitted with an H55 easy chair by Björn Hultén offers a view of the San Francisco Bay.

  • 
  With input from her clients, Barensfeld used a computer to generate the circular patterns that were carved into a pair of Cor-Ten steel screens with a water-jet cutter. The perforations allow light and the green of the surrounding Koi bamboo to filter into the space while preserving privacy.
    With input from her clients, Barensfeld used a computer to generate the circular patterns that were carved into a pair of Cor-Ten steel screens with a water-jet cutter. The perforations allow light and the green of the surrounding Koi bamboo to filter into the space while preserving privacy.
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modern landscaping terrace pie deck reflecting pool granite patio

A maple tree grows through an ipe deck in the garden that Mary Barensfeld designed for a family in Berkeley, California. A reflecting pool separates it from a white-granite patio, which is furnished with a Petal dining table by Richard Schultz and chairs by Mario Bellini.

Architect 

Mary Barensfeld, a 34-year-old architect from a rural town near Pittsburgh, Pennsylvania, moved to San Francisco eight years ago and was immediately taken by the Bay Area’s year-round gardens. Luckily, she also came with a degree in landscape design from the University of Pennsylvania, “because I don’t think architecture stops with a building,” she says. “Architecture and landscape should meld into one design process.”

Not surprisingly, her first big project—a steeply sloping rear garden for a young family in the Berkeley Hills—is an outdoor room for quiet contemplation that echoes Le Corbusier’s oft-quoted dictum, “The outside is always an inside.”

The 1,150-square-foot garden serves as an elegant transition from the couple’s 1964 Japanese-style town house to a small, elevated terrace with views of San Francisco Bay.

The confident, tectonic design is composed of an ipe deck next to the house; a patch of white-granite patio stone, cut to match the boards of the deck; a slender, trapezoidal reflecting pool between the two; and a terraced hillside. All are made from simple materials that Barensfeld says will “gain additional visual complexity through weathering.” Filigreed Cor-Ten steel fence screens—perforated with a water-jet cutter to cast dappled shadows on a bench and the ground below—and zigzagging board-formed concrete retaining walls are examples.

Instead of adding a space-consuming stairway for the residents to reach the highest point in the yard—17 feet above the 400-square-foot patio—Barensfeld designed the concrete walls to double as walk-up ramps. Striking and essential, the walls were also the garden’s most costly feature, because—due to the steep grade and seismically sensitive location—they required 16 stabilizing piers and beams.

modern landscaping terrace concrete wall ramps ipe deck
Board-formed concrete retaining walls double as ramps from the deck to the garden’s highest point.

The garden reflects structural lessons Barensfeld learned in Japan, where she traveled for six weeks of intensive study in the summer of 2003 while she was still in graduate school. “I noticed that Tadao Ando’s almost brutalist concrete work is designed to play off the intricate garden spaces of Kyoto,” she says. “I am always swayed by structure. Plants and soil are best combined with hearty doses of built forms and robust trees.”

Barensfeld has employed other landscaping tricks that she observed in Japan to make the Berkeley garden seem bigger than it is. The ornamental pool reflects the sky as well as the distinctive foliage of three types of Japanese maple. Golden creeping Jenny drapes over the walls, perfectly complementing the maple trees— especially in the fall, when the Bay Area experiences its finest weather. Lemon thyme ground cover adds a fragrant dash of color to the ramps.

“I kept the plant palette simple for easier care, and Japanese maples are so sculptural anyway,” Barensfeld says of the garden, which was completed in March 2012. “They offer an ever-changing pattern of light and shade.”

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