The AD100 duo transforms a stripped-down ranch with a forest-inspired palette and glossy millwork

In the Laurel Canyon home of producer-songwriter Tyler Johnson and talent manager Lindsay Marias, AD100 designers Pierce & Ward layered warm wood tones, vintage furnishings, and a forest-inspired palette to create a series of interconnected living spaces designed for gathering. JUSTIN CHUNG

Some creative disciplines—writing fiction, painting landscapes—are solitary by nature. Shaping a chart-topping song, on the other hand, involves a buoyant push-pull. “Collaboration always starts with the amount of trust you have in the other people and in the process,” says Tyler Johnson, a Grammy-winning producer and songwriter known for his work with Harry Styles , Miley Cyrus , and Beyoncé .

Johnson and Marias relish the house’s lived-in quality. “That’s what Pierce & Ward do—they design homes that feel like an heirloom,” says Marias.…