A small, single-story addition to the row house adds a playroom without eating up too much outdoor space. A green roof also helps makes up for lost garden beds, while creating attractive, leafy views from the second and third floors. In summer, when the sliding doors are left wide open, indoor and outdoor spaces blend together.

Purple thistles, California poppies, clover, and dandelions have all taken root in the roughly 10-inch-deep, lightweight humus and grape-husk soil in this 580-square-foot green roof. Designer Peter Liang says that he "wanted to plant a green roof for its thermal mass, but I wanted it to be as natural as possible."

The master bathroom’s countertops are detailed with the same Carrara marble seen in the kitchen. The faucet and shower trims are by Kallista.

The long rectangular Field House abuts what Burnette describes as a “memory orchard,” a grove of fruit trees just beyond the deck that was planted in honor of Geller’s late father.

Suzanne and Brooks Kelley at the back of their 1,100-square-foot guest cottage.

The owners toured this home, which surrounds a mature tipu tipu tree, while visiting relatives for the day. The brick is original to the 1947 construction.

Sliding doors by Quantum were made to look like the original panes that couldn't be saved, and they lead to a fire pit outside.

Tina and Matthew Ford, here with daughter Daisy, are the owners of Shade House Development, the company that designed and is building the suite of houses that comprise Row on 25th in Houston, Texas.

The series of pitched white buildings was inspired by the work of architect Hugh Newell Jacobsen. “The shell of the house is a very simple form,” says Matthew Ford, “no turns or intersecting roof sections. This allowed me to use solid but inexpensive framing and roofing crews. We are always looking for the point where simplicity and luxury meet.”

Author and French designer Daniel Rozensztroch's industrial loft was a 17th-century manufacturing plant in the Marais, a historic district that abuts the Bastille. A row of vintage iron cabinets, mostly recovered from doctors’ and dentists’ offices, separate the kitchen from the dining area. The Gervasoni table was designed by close friend Paola Navone. Architect Dominique Perrault and designer Gaëlle Lauriot-Prévost are responsible for the the tubular pendants over the dining table, which resemble old subway lamps.

Stainless steel was selected for the kitchen countertops, and the pair relied on a local industrial sheet metal fabricator to help them prepare the material for residential application. The mix of warm and cool adds depth and dimension to the space.

Childrens’ bedrooms are reimagined as cozy private cubbies, much like sleeper cars on a train. These compact rooms were designed to encourage outside interaction with the rest of the household during the non-sleeping hours of the day. Sliding doors and baltic birch built-ins complete the rooms.

Heywood lives in Oakland with his wife, two small children, and lots of books. The young boys provide the abstract paintings that grace the walls.

The view!

At the top of the stairwell, a sitting area is outfitted with a vintage Eames lounge, a large Jack Goldstein painting, and a 1970s light fixture found by Marcovitz in Paris.

The kitchen features a concrete island topped with marble. Deja-Vu stools by Naoto Fukasawa surround the island. A print by Guy Gormley, as well as a painting bought during holiday in St. Tropez, hang on the walls.

Light from a new skylight pours into the home's entryway and living room. Steel columns and beams were added for structural reinforcement, and the couple left all beams, old and new, exposed.

"I always wanted to have my very own yellow brick road," says Viviana de Loera, whose favorite part of the home is the playful staircase. The original stairs and handrail were preserved in the renovation.

In the living room, and throughout the home, recessed "book nooks" are used to provide space-saving storage. The only seating in the room is a sleek black faux leather and steel daybed, fabricated by Montreal-based Surface Jalouse. Walls were removed to cohesively unite the living space and kitchen.

Rustic meets modern in this bedroom, where white track lighting beautifully illuminates a black wall and serves as accent lighting for vintage wall art.

Take a look at some of the most exciting, sustainable buildings around the world, and you may notice something they have in common: green roofs, or rooftops covered with a thin layer of soil to allow for grasses and other low-lying plants to grow.

“We brought the cedar siding of the exterior inside strategically, both to blur inside and out and to give texture,” Young says. “Simple forms and clean lines, if done right, have a calming effect and nicely contrast the furnishings.” The master bedroom features the same western red cedar as the exterior, and lighting by David Weeks Studio.

New Depths Inspired by a local winery, George Kyprianou wanted a glass top on his subterranean wine cellar. The interior is lit, casting soft light into the living space at night and revealing the 132-year-old stone foundation. The three-quarter-inch glass lid sits flush with the floorboards; it opens with an ingenious device that Kyprianou devised using a 12-volt air compressor and a remote-controlled switch. When you push the button, the glass lifts just enough to be removed by hand.

Fleetwood Windows & Doors gave the home ample access to sunlight. Matching CB2 lounge chairs face the pool.

Mark Fekete and Viviana de Loera, co-founders of interdisciplinary design firm MARK + VIVI, happily took on the challenge of building their dream home in a transitioning Montreal neighborhood. The couple's kitchen is an exercise in both sustainability and creativity. The island is wrapped with reclaimed scrap wood uncovered from the house during demolition. Chalkboard walls provide a whimsical canvas for graphic images and notes. Stainless steel was selected for the kitchen countertops, and the pair relied on a local industrial sheet metal fabricator to help them prepare the material for residential application. The mix of warm and cool adds depth and dimension to the space.

The chalkboard wall also acts as a sliding pocket door to the first floor bathroom. To maximize usable space, there are no hinged doors in the home's interior.

Light Box Peter created a simple uplight at the top of the wood box by wiring together energy-efficient fluorescent fixtures typically used under cabinets and countertops. “The cheaper magnetic models hum unacceptably loudly, so make sure you get the electronic ballast types,” he warns. He then painted the cavity white to reflect light and covered them with quarter-inch-thick acrylic from TAP Plastics. homedepot.com tapplastics.com

From outside, the home's Western red cedar facade harmonizes with the wooded site.

The kitchen’s stainless-steel range by Wolf matches the Tolix counter stool, which stands beside an island topped with Carrara marble.

The view of Kapiti Island is fully revealed from the tower.

Locally sourced Canadian plywood was used for the flooring throughout the home, and all doors and windows were replaced with low-energy upgrades. The couple shares their space with guide dogs they foster through a local organization.

The top container contains Wardell's office—and a "napping nook" above that.

The Kelleys furnished the cottage with help from Suzanne’s daughter Betsy Burbank of Betsy Burbank Interiors. Classic modernist icons, such as a Saarinen Womb chair for Knoll, a Herman Miller Eames lounge chair, and an Eileen Grey E1027 side table look at home alongside present-day pieces such as an Encore sofa (which handily folds down into a sleeping surface) from Room & Board and a Doka rug designed and produced by Stephanie Odegard. The Wohlert pendant lights from Louis Poulsen were designed by Vilhelm Wohlert in 1959, but grouped as such, they appear distinctly contemporary.

In the dining area, a one-of-a-kind table with a reclaimed Carrara marble top by NET—themultidisciplinary design firm of architect Alejandro Sticotti, with whom Nicolas works—is surrounded by prototypes of the company’s Board chair. The family dog, China, sits on a floor made of travertine tiles.

The architects added a small circular skylight to serve as a vertical focal point in the center of the fifth floor. The quarter-sawn white oak risers produce a beautiful rippled grain highlighted by the abundant natural light.