In the rear of the house, a new addition extends the living space and adds a roof terrace off the second-floor master bedroom. A garden is accessible through a wall of sliding glass doors with Sapele mahogany frames, set back to control solar gain.

Architect Gregory Phillips connected the original house to a new modern extension that doesn’t interfere with the surrounding houses. “I try to be true to the location,”he explains, “so it doesn’t seem like some spaceship has landed.”

Architecture firm NADAAA planned a striated addition to a brick neo-Georgian house in Boston with the owners’ primary goal in mind: to engage with the outdoors year-round. The walls of the rear kitchen and living space are virtually all glass, allowing sight lines to the existing gardens and new pool house through a series of framed vignettes onto the backyard landscape. The glass box is bookended by uniform “fins” that mark the edge of each picture window, as shown here. Photo by John Horner.

Ryan made sure to assign distinct space for the residents' twin passions, literature and botany, in the new pavilion. They describe the final product as a greenhouse and library rolled into one.

The light-filled pavilion centers around the residents' joint workstations.

The studio addition is part of a revamp that unifies buildings, canopies, and the courtyard. It was a three-year job for architect-owners Matt Wittman and Jody Estes, with many materials opportunistically salvaged.

He selected the material for its dimensional stability, warm color tone, and natural weather resistance with minimal maintenance needed.

White was used extensively throughout the addition, a choice that the architects say enhances the spacious feel of the rooms and draws attention to the views.

Architect Jack Ryan of the firm 3six0 clad the addition to the 1920s house in western red cedar.

To the east, through the kitchen, it captures a luscious view of a green nikau palm grove.

When the Ferguson Sauder family—parents Meg, a school counselor, and Tim, a design instructor, plus kids Cole, Olive, and Asher—wanted a multifunctional backyard addition, they decided to build it themselves. Two Liftoff chairs by Tim Miller, one of Tim’s former students, surround an oil-drum fire pit set in granite dug up on the property. On the deck, the Panamericana chair is by Industry of All Nations.

Modern bathroom vanities in white bathe the room in light, creating a relaxing atmosphere. Mirroring the kitchen of this home, the bathroom features custom wooden cabinetry and Brodware faucets.

The larger volume of the addition, consisting of kitchen, living, and dining spaces, loops around to the smaller bedroom through a wooden passage. The same ipe, with differing finishes, is used for both the interior and exterior. Expansive sliding glass doors by Fleetwood dramatically open up the living space to the outdoors.

The roof deck is a place for entertaining, and offers scenic hillside views. During the design process, the team was challenged with preserving these views while adhering to the required 3.5-foot railing height mandated by building code, a height that would block all views while seated. As a solution, the team came up with open metal railings that would maintain safety while preserving the view.

Bachs, seasonal beach houses that line New Zealand's ample coastlines, are small by nature, but this one in Auckland felt a bit too confined. The residents called in Carolyn Gundy of C Architecture to plot an addition that adds extra living space and a ton of volume.

Privacy and respect for the natural environment was foremost in the new owners’ mind when conceiving the home’s redesign. The placement of the addition limits direct sightlines to neighbors and offers unbroken views of the surrounding area. The aluminum frame and glass walls create a light, airy atmosphere.

The double-height addition exaggerates the home's actual size and augments its views, bringing the total footprint to 1,400 square feet. Bedrooms and other key spaces are spread out around the new living room.

“Before, the house turned its back on the landscape,” said Parish. “This renovation and addition really animates the garden.” Sliding glass doors match those of the living room beyond the deck, and both can be completely open to the yard.

The glass balustrade and floor were sourced in Germany and installed by James Aiken. Angelique, the founder of Papillon Designs and Landscaping, clustered plantings around the exterior glass addition.

Tom Givone's current weekend abode, nicknamed the Floating Farmhouse, is—so far—his capstone project, a synthesis of personal taste, material experimentation, and historically sensitive restoration: a living laboratory for how to bring the vernacular past into the present.

Overhead cabinets now can be easily swung open for ease of access. The kitchens are priced at IKEA’s usual retails. A 10 by 10 foot kitchen fitted with Sektion cabinets will range from around $1,300 to $2,200, excluding appliances.

In the serene upstairs bathroom, Kennon paired Chinese Bluestone floors from Defazio with white ceramic wall tiles from local supplier Classic Ceramics. The tub is by Bette with a Roger Seller faucet, while the bathroom sink is by Argent with a Grohe faucet.

Black and white kitchen tiles add visual interest to this stunning modern kitchen by IKEA.

The outbuilding serves as a studio, a guest house, and a playroom. A Murphy bed sourced from Craigslist was customized with a birch surround to give it a built-in appearance.

Claire and Ken Stevens approached architect Ko Wibowo to create a modern addition to their 1970s home in Tacoma, Washington. The couple’s needs had changed since Ken was diagnosed with Alzheimer’s a few years ago.

A found Eero Saarinen Executive chair was restored with help from a local auto body shop.

From the street, only the main house and one adjoining addition are visible, belying the spacious extension at the back. The architects call this the “Tardis effect,” named for the time machine on Dr. Who that looks much smaller on the outside than it does within.

The couple's house, designed by architect L. Jane Hastings in the early 1970s, is located on a steeply sloped site that backs up to a state park.

The decidedly industrial exterior features smooth dark gray stucco, a custom steel mesh wall, and a metal spiral staircase leading from the ground floor to the roof deck. The clients love the industrial look because it feels raw and natural to them. The footprint of the new addition lies at the rear of the existing home, and the dark exterior helps seamlessly integrate the new structure into the natural slope of the land. According to architect John Klopf, the new addition acts as a spatial backdrop for the existing structure, “receding visually out of respect for the original home.”

The bungalow had beautiful bones but some major problems, including a poorly designed addition to the back that had to be removed. In its place, Tribe Studio designed a gray brick box that connects directly to the garden. “The owners love the fact that the extension is compatible with the old part of the house, and is completely different from many renovations of this type, which simply open up the back in a single move,” Tribe says.

A tiny outbuilding offers a cozy living space inside a simple shell.

As the facade of a Bates Masi-designed home in Water Mill, New York, rises from eight to 14 feet high, the mahogany planks subtly widen. “It was quite a demand to make of the contractor,” architect Paul Masi says. “But the design was so much about traveling through the site and weaving [the house] together with the deck.”

Fed up with flashy, environmentally insensitive beach homes, architect Gerald Parsonson and his wife, Kate, designed a humble hideaway nestled behind sand dunes along the New Zealand coastline. Crafted in the image of a modest Kiwi bach, their 1,670-square-foot retreat consists of a group of small buildings clad in black-stained pine weatherboards and fiber-cement sheets.