Mint green-painted ironwork and tiles connect the indoors to the outside more fluidly.

The Max-A studio is also built with a pine frame, though it has pine panelling on the ceiling, while the main house ceiling is painted a warm white.

Two-inch-thick bamboo treads and a bamboo handrail on the stairs lead the way to the second floor.

Seemingly a single, seamless unit, the stair is composed of two elements—treads and mezzanine—and held in place by two distinct strategies: The stairs are welded to, and cantilever out from, a series of steel tubes concealed in the walls; the mezzanine is attached on one side to a steel beam, and hung at two other points from rods attached to the roof structure.

The steel-and-wood stairs lead to the master bedroom and study.

Julie Torres Moskovitz, who designed New York’s first certified Passive House, recently finished her first book, The Greenest Home (Princeton Architectural Press), about the first wave of ultragreen homes in the United States (following the 40,000 already constructed in Europe). The title hits shelves in May 2013. Here, a custom stainless steel stair with treads of perforated steel replaces the old wood staircase in the rehabbed Park Slope brownstone.

Wood decking extends out to the yard.

Amending Meeuwissen’s early request for an open bathroom space, the architects devised a more private chamber with an overhead skylight and walls in stone tile from Intercodam Tegels.

After - living room (Rubio monocoat floors, Chantilly lace walls, used fireplace)

Main Staircase

99 by Von Tundra and Lydia Cambron $13,000 Oregon-based Von Tundra’s unit combines three different storage options—a rack, drawers, and boxes—into a multipurpose dresser.

The main staircase consists of simple oak treads that cantilever out from side walls sheathed in natural vertical board and are supported on the other side by a continuous grill-like railing truss.

The addition’s most eye-catching feature is the steel staircase with recycled blackbutt wood treads. The bottom steps double as benches to supplement the six Arne Jacobsen Series 7 dining chairs for Fritz Hansen and a Nomos table base by Sir Norman Foster for Tecno.

The Armadillo is parked on a 1,000-square-foot lot that gives the couple ample outdoor space.

This outdoor chair from designer Damian Velasquez is both striking and strikingly comfortable—you might not believe you're sitting on metal. The mesh design is sturdy, but has just enough give to conform to your body. The heat-dispersing, wind-resistant powder-coated stainless steel construction makes it a smart addition to your yard.

O Table by Half 13 $2,800 This curvy powder-coated stainless steel outdoor table, fabricated by Damian Velasquez in Albuquerque, New Mexico, is available in nine vibrant colors.

Wooden decks can be added to heighten the indoor-outdoor living experience.

Landscape architect Kevin Campion went to great lengths to protect the poplar trees during construction. Delta Millworks charred the cedar gable fronts following the shou sugi ban technique.

A Rafa Kids swing hangs below the loft bed near the large desk designed for playing with Legos.

Shumaker Design + Build Associates honed in on natural light, rich tones, and earthy materials to update this Chicago kitchen. The renovated kitchen now boasts a ten-foot-long banquette paired with a West Elm table, offering seating for everything from quick breakfasts to grand dinners.

Light pine finishes make the interiors feel airy and spacious.

An opaque sliding glass door separates the bathroom from the dining area. White tile with pink-colored grout ties the two spaces together.

A pool cage with a retractable awing makes the pool deck feel like a natural extension of the home's interior, while the terraced construction lifts the building up above the level of floods and storm surges.

With the help of architects X+L Studio, Nynke Meeuwissen and Mark Aink rehabilitated an old school outside of Amsterdam into a comfortable roost for their family of five. The former gym—with original herringbone parquet floors—is now the living room, furnished with Minotti sofas, a Danskina rug, and a Gyrofocus wood-burning stove.

The Heddle Suite is "the look is one of New England design turned on its head

Local sailboat shops wanted thousands to make the 13-by-13-foot curtain that hides the Wall of Storage. "We we called my parents in Bangkok, gave them the dimensions, and they got it made for 150 bucks." says Im.

A white Bulthaup system fits cleanly into the 13-foot-long kitchen.

The first-floor rental unit features a table from an 11th-century monastery turned pub.