A formerly Mediterranean-style house in Sausalito received a complete makeover courtesy of John Lum Architecture and designer Nicole Hollis. The media room’s Minotti sofa is joined by an Oscar Niemeyer lounge chair from Espasso, tables by Uhuru Design and Coup Studio, and a Bruno Moinard floor lamp; the large painting is by Hugo McCloud, and the crab sculpture is by Atang Tshikare.

To the skylight above the second-floor landing, Hollis added a screen that casts striated shadows across a Jim Lambie wall installation of colored sunglass lenses; a Tomás Saraceno geometric sculpture hangs in the hallway.

In the living room, cocktail tables by Nakagawa Mokkougei nestle between a Christophe Delcourt sofa and a Vincenzo De Cotiis table on one side and a pair of midcentury Italian lounge chairs flanking a Blanche Jelly table on the other; next to the minimalist marble fireplace, a Markus Haase sconce offers a visual jolt.

A Richard Artschwager sculpture punctuates the entrance hall area beneath the open staircase.

Vincenzo De Cotiis wall lights accent the kitchen, where Hollis-designed stools fit neatly under the island’s counter.

A David Weeks Studio chandelier fans out over the custom-designed table by Hollis and chairs by Jean-Michel Frank and Adolphe Chanaux from Ecart International; a large tapestry work by Pae White hangs above the TV cabinet, also by Hollis, and a lamp by Studio Henry Wilson.

A painting by Viktorie Langer lends a splash of color to the office, where Hollis devised the desk with a lift that enables it to move up and down; the chairs are by Rooms, the wall cabinet is by Damien Gernay, and the rug is by Christopher Farr.

The walls of a guest bath are lined in weathered Atlantic white cedar.

In the primary bedroom, hand-sculpted gypsum pendants by Rogan Gregory descend above a Tod Von Mertens bedside table.

Hollis framed the primary bath’s custom-made mirror with sconces by Michael Anastassiades.

Above the home’s entrance, a bridge leads to a gym over the garage.

A bronze work by Eva Rothschild stands amid terrace plantings overseen by Arterra Landscape Architects.