Steel allowed Kunding to be playful with the staircase’s form.

Typography guru Erik Spiekermann and his wife, designer Susanna Dulkinys, hate clutter. That’s why they love the super-sleek Berlin domicile they constructed to have just the right lines—and a host of energy-saving features behind the scenes. The stainless-steel Bulthaup kitchen "cost as much as a small house," said Spiekermann, though he did get a discount: Bulthaup is one of his clients.

The steel canopy protects the residents from Seattle’s notoriously rainy weather as they walk from the entry gate to the front door.

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.

Wooten asked Massie to incorporate a 1960s steel screen by Don Drumm into the house; Massie placed it on a central pivot so it acts as a gate, a privacy barrier, and an architectural gesture. “We actually changed the whole roofline of the porch to accommodate the screen being able to pivot,” says Massie. “The screen also allowed the building to have an immediate history.” dondrummstudios.com

Homeowner Simon Doonan stands next to the front door. "We have flamboyance, and we’re not inhibited about anything. [Architect] Gray Organschi gave [the house] that intellectual rigor needed to make it beautiful. We were well matched."

Two smaller, adjacent structures house autonomous bedrooms, each equipped with a full bathroom.

“I made a very conscious decision, when I realized that the house with nothing in it was such a fantastic work of art,” says Greg Wooten, “to go out of my way to pull back and only select pieces that complemented the architecture and would allow both the house and the furniture to breathe.” The place is furnished minimally with vintage finds he chose for the rooms over time.

Joaquin Altamirano and Silvia Martín worked with Daniel Bergman Vázquez of Estudio Untercio to create an open-plan oasis in an apartment building in central Madrid. Estudio Untercio designed the medium-density fiberboard cupboards, which are coated with lacquer paint matching the ceramic-porcelain countertops. The tubular hood above the island is by Teka.

One of the most classic ways to understand a space is through an architectural drawing, which can take the form of a plan (a flat aerial view of a space) or an elevation (a flat view of an interior wall or exterior side of a building).

“Designing a house is like writing a song: You try as best you can and you have to finish at some point. You’re probably best to write another song than driving yourself mad.”—Jamie Norton, resident

“We took away a very thick, heavy staircase that led to the loft, and designed one that had a much lighter look,” Wåhlin says. “The new one, made of steel, looks simple and indeed light—but is in fact super heavy and was a real challenge to construct.”

The Helios Fire Bowl Set from Skagerak is a portable outdoor fireplace that is ideal for a back patio. It can be used as a fire pit, or with the Helios Steel Grille and some charcoal to create an outdoor grill for hotdogs, vegetables, or shish kebabs.

A steel spiral staircase efficiently links all three floors. With no interior doors, Yurika can keep an ear on the shop from upstairs while maintaining the privacy of her home with the help of the vertical distance.

Carport doors swing open to the alley outside of the studio, where the property extends enough for additional landscaping. The corrugated steel siding comes from a surplus from a nearby apartment building. “There’s a lot of urban infill potential in Seattle’s neighborhoods,” Wittman remarks. “We’re catching up to older, denser cities in this regard.”

The staircase leading to the master suite features aluminum treads supported on stainless steel tubes. "We wanted something that would allow the resin panels behind it to reflect the light from the windows at the top of the stair," Slade says.

The 925-square-foot house Maggie Treanor calls home blends into the landscape somewhat; with a galvanized steel shed roof and siding, it looks like a high-design little brother to the barns on the surrounding farms.

When the Casali family gave Michael Krus and Prishram Jain of TACT Architecture free rein to work with unconventional materials, the architects responded by creating a geometric 4,300-square-foot smart home encased in aluminum panels by Agway Metals. The front facade features Cor-Ten steel fabricated by Praxy Cladding.

Inspired by the Sydney Opera House, architects Andrew Maynard and Mark Austin paid careful attention to the extension’s “fifth elevation"—the way it’s seen from the sky. Its tiny houses, clustered at the southern end of the property, are clad in white steel panels and western red cedar shingles, contrasting materials that emphasize their geometric forms.

“There’s a presence to that place—it’s vast, and constantly shifting,” Moffitt says. “It was clear that this house should be an observation shed for the changing landscape beyond.”

Conceived as a glass wall or window that could swing open rather than a typical door, the resulting glass-and-metal piece is so heavy that it required its own foundation! Thanks to clever engineering by Sand Studios, even seven-year-old Macy can operate the 2,000-pound door.

Nakada works from an Alvar Aalto table in the living and dining area, adjacent to the kitchen. He saved on some elements, such as the plywood cabinetry, and splurged on others, such as the Finn Juhl chairs and Vilhelm Lauritzen lamp. A skylight beneath the angled roof allows in a sliver of constantly changing light.

Original 1st floor plan

Revised 1st floor plan

Revised 2nd floor plan

Original 2nd floor plan

Paseo Urbano Monumento a la Madre - Eskema Arquitectos

Paseo Urbano Monumento a la Madre - Eskema Arquitectos

Paseo Urbano Monumento a la Madre - Eskema Arquitectos

Paseo Urbano Monumento a la Madre - Eskema Arquitectos

Paseo Urbano Monumento a la Madre - Eskema Arquitectos

Paseo Urbano Monumento a la Madre - Eskema Arquitectos

Paseo Urbano Monumento a la Madre - Eskema Arquitectos

Paseo Urbano Monumento a la Madre - Eskema Arquitectos

Paseo Urbano Monumento a la Madre - Eskema Arquitectos