The couple snapped up a 2,600-square-foot late-18th-century flat, which they’ve since filled with vintage finds and Hayon’s own designs and prototypes.

The bed in Sara’s room has been in the family since the early 1900s.

The bedroom in the guesthouse features cheery colors.

Architect Alex Gil and his wife, Claudia DeSimio, affixed a 750-square-foot addition to the roof of a 19th-century Williamsburg townhouse, transforming their cramped third-floor apartment into a modern duplex. The original fireplace remains, but has been stripped down to exposed brick, as have the surrounding walls, creating an almost wainscot-like design of exposed brick with flat white drywall above.

All appliances in the kitchen are from Thermador, save for a Miele dishwasher. Bright white Caesarstone bounces yet more light into the space.

Of the Caesarstone counter, which extends to a built-in steel dining table with a detachable leaf, he says, “The total length is just over 16 feet, which gives it a really beautiful, sleek proportion.” Chairs are from IKEA.

This iPhone 6 case from Native Union is made of rich walnut wood that is met with a pop of color.

The subdued white and grey interiors help highlight details such as the flat's original wood floors. Apart from the blue bathroom identifiers and room markers, the only other colors used are the occassional orange and green, the same hues that are used in several of Wierciński’s other projects.

Bernstein specified sequenced walnut veneers in the kitchen and dining area and counters from Caesarstone. The Chrysalis bar stool is by One & Co for Council. A Foscarini pendant hangs above Ligne Roset’s Eaton table and bench.

A cross-section of petrified wood from Caesarstone.

Caesarstone, a manufacturer of durable and striking quartz surfaces, showed various applications of their products (including a glimmering coffee table).

Philippe Malouin for Caesarstone, Palazzo Serbelloni Corso Venezia 16.

The backyard sports a sequence of raised flower and vegetable beds and two green roofs—one atop the workshop and other atop the back entrance.

The three units in the Belfield Homesare the first certified Passive House homes in Philadelphia. Designed by Plumbob, the project is a model for low-income urban infill development, providing sustainable homes for those who can least afford to absorb rising energy costs. It is a finalist in the single-family home category.

The materials palette that I chose is light in color with a few splashes of color. This lightness holds the space open and gives it a contemporary feel.

In the kitchen, Walker continued an earthy color scheme. The range and wall oven are by BlueStar, the hood is from Zephyr, and the island is Caesarstone.

The color of the Fishers’ front door was inspired by an old Land Rover Defender’s hue, which Charlie had Benjamin Moore custom-match.

Caesarstone and Tom Dixon are collaborating on "The Restaurant," a showcase of four conceptual kitchens and dining rooms designed by Dixon. Stop by La Rotonda della Besana, Via Enrico Besana 12.

Yolo Colorhouse / Paints Poster-sized sample swatches, a host of attractive colors, and nontoxic paints let pint-sized paint company Yolo Colorhouse handily compete with their mega-sized corporate competitors.

Xystum Color Block vase by CB2. Postmodernism appropriates classical cues in a Pop-y, contemporary manner. Therefore, this vase’s name, a Greek architectural term loosely translated as “portico,” is apropos.

The duplex’s lower level, formerly a railroad apartment, was conjoined with its neighbor and reconfigured to meet the rooftop addition.

In this kitchen, the existing cabinets were updated with a coat of paint and topped with new Caesarstone countertops. The refrigerator, dishwasher, and mixer are from KitchenAid, and the cooktop is from GE.

"Use parks to create places people want to hang out in and manage stormwater at the same time," says Inga Saffron, the Pulitzer-prize wining architecture critic for the Philadelphia Inquirer. "The city is under federal mandate to reduce its overflows into rivers when it rains heavily. Moreover, Philadelphia has a real shortage of green space. So it combined these two ideas: Instead of building twenty-five-inch pipes, they will use greenspaces to absorb rainwater. It's the most sustainable thing Philadelphia is doing."

Vacant lots and derelict houses aren’t terribly hard to find in East Kensington, a neighborhood where more developers are starting to pay attention.

The surrounding neighborhood of East Kensington is mostly brick facades.

Images by Raw Color hang in a room upstairs.

Here's the weathered wooden dining table where the family gathers for meals and conversation.

Three’s Company Inspired by the minimal color scheme of a hotel they stayed at in Bali, Winterhalder and Ehlers decided to limit their palette to three colors: anthracite black, concrete gray, and a light larch wood. The first move was to paint the backyard wall gray. Next up for a coat of dark paint was the villa’s old-fashioned wooden staircase, which the couple didn’t like but didn’t have the budget to replace. The consistency works to unite the different styles found in the house. “Somehow,” says Winterhalder, “it all fits.”

A Coral pendant lamp by David Trubridge hangs in the dining area.

Affordable Pop Art: Bradford Shellhammer, the co-founder of Fab curated a guide to his favorite affordable art spots.

Kartell Pop Chair, designed by Piero Lissoni with Carlo Tamborini.

On sale here are pillows made by Pop Pop Stuft.

Caesarstone will introduce its new Fresh Concrete, Sleek Concrete, and Raw Concrete colors. The colors offer the look of concrete with the ease of Caesarstone maintenance. Slabs are non-porous and resistant to heat, stains, and scratches.

Stone Edge tables by Nendo for Caesarstone.

Walk-in rainfall showers can be found in the bathrooms.