Symmetry rules in the entrance hall, where a pair of Delft-vase lamps and objets d’art sit on an antique table from John Rosselli antiques .

Painted panels by Bob Christian hang in the living room.

In the paneled living room, a mix of patterned and printed fabrics covers the custom sofa and pillows. antique quilt.

Custom dining chairs are slipcovered in a No. 9 Thompson linen. Painted floor by Bob Christian .

Above a Raoul Textiles linen covers the seating at the kitchen table. Custom pot rack by Ann Morris .

A pair of 19th-century English armchairs in a GP & J Baker stripe cozy up to the living-room fireplace. Antique neoclassical mirror over mantel; antique French rope stool; custom rug by Markham Roberts .

An antique eagle watches over the sitting room. Curtains of a Les Indiennes floral cotton; 18th-century English desk; John Fowler rug.

In the master bedroom, Roberts deployed the same Bennison floral chintz on the walls, curtains, lamp shades, pillows, and vanity skirt. On wall over dressing table, Sailor's Valentine by Sandy Moran .

A John Robshaw Textiles linen covers the master bath’s vaulted ceiling.

Blues—from the curtains of an Amanda Nisbet design linen to the Elizabeth Eakins carpet—set the tone in an airy bedroom. 19th-century American giltwood cornucopia; antique trunk.

A flock of painted-wood shorebirds by Pat Gardner perch above the guest bath’s Kaldewei tub. Lefroy Brooks tub filler; Star lantern by Vaughan .

A custom rug by Hillary Anapol adds a pop of color to a child’s bedroom. Small circa-1910 orkney chair.

A stone path leads to a marsh.