Plaid Meets Prada When Scottish-Born Architect Kevin O'Sullivan Designs a Home for Art-Loving Clients in Amagansett.

Bluestone pavers and an allée of linden trees draw the eye toward the front door of an Amagansett home designed by East Hampton–based architect Kevin O’Sullivan.

The foyer features The Identified Flying Object, a Roy Lichtenstein-like paper airplane sculpture, and Duchamp on Pepsi, both works by Pakpoom Silaphan, in addition to a piece by Ellsworth Kelly and a Josef Albers table.

In the living room, an Yves Klein Table Bleue is flanked by a vintage Pierre Paulin Ribbon chair and a pair of Hans Wegner Papa Bear chairs.

Brass and copper Jo Hammerborg pendants float above the kitchen’s teak island, which features a Basaltina waterfall countertop from Stone Source; the island and floor-to-ceiling white lacquer cabinets were custom designed by O’Sullivan.

The adjacent family room is lined in a Phillip Jeffries wallpaper and features a collection of Blenko glass on teak and lacquer shelves.

The library features Pierre Paulin Mushroom chairs and ottomans upholstered in their original Knoll fabric, along with a metal-and-glass cocktail table by Sol LeWitt. The Edward Wormley sofa is covered in Knoll’s Brugge in Flemish.

In the dining room, a sputnik chandelier illuminates a shagreen table by Karl Springer and a painting by Carol Hunt.

An iron, resin, and fiberglass sculpture by Keith Milow hangs above a Paul Evans–inspired wooden credenza

A substantial portion of the clients’ art collection hangs in the home’s lower-level gallery, where pieces are displayed in rotation next to a circa-1800 French gilt desk and leather-upholstered chairs.

In the master bedroom, a canvas by Carol Hunt hangs above a verre églomisé console.

The master bath’s “floating” shower of glass and Carrara marble has a verdant view and Jeff Koons’s Puppy (Vase) as a companion piece.

In the outdoor courtyard, a chimney of South Bay Quartz adds contrast to a quartet of vintage Richard Schultz armchairs and a bust of Marie-Antoinette.

Travertine marble surrounds the pool; the umbrellas are from Pottery Barn and the chaise longues (some of them arrayed on a sunken terrace within the pool) are also Schultz designs.