Reilly slotted a utility room behind the kitchen to house the oven, an extra fridge, pantry cabinets, and the laundry. A Navajo rug that Reilly found at a local yard sale adds a touch of color. The countertop and backsplash are stainless steel. She found the counter stools at a local thrift shop. “I scour every secondhand shop and go to ever yard sale in the Hamptons,” she says. “Each piece is the result of weeks of searching.”