Longniddry House, Glassel Park Road, Longniddry

This is a 17th-century laird's house with a complex building history, situated on Glassel Park Road in Longniddry. It may have originally been a single-story, L-shaped building, later raised to two stories. A two-story, two-bay addition was built in the mid-18th century, and 19th-century alterations and additions were made to the rear. The exterior is largely harled, with sandstone ashlar dressings, some with chamfered arrises. The windows are sash and case with a 12-pane glazing pattern. The steeply pitched roof is covered in grey slates, likely originally thatched.

The south (front) elevation may have originally been single-story with three bays, a central doorway later blocked to create a window. It was likely raised later with three windows on the first floor. The outer windows appear taller and were probably enlarged. A coped ashlar skew with scrolled skewputts, contemporary with the mid-18th century addition to the east, is visible. The west elevation features a two-story, three-bay range extending at right angles to the north, with a 19th-century piended porch projecting from the center of the ground floor. Some windows have been blocked. The west gable of the south elevation has two ground floor windows, a later first-floor window, and two small attic openings. The gables have crowsteps and a broad harled stack.

The mid-18th-century addition adjoins the east gable and south elevation. It is taller, two stories, and two bays, likely providing a first-floor drawing room. A ground floor door with a Gibbs surround is visible, along with the remains of a former porch. The windows have chamfered arrises, and the addition features ashlar coped skews with scrolled skewputts and raised harled stacks.

The north (rear) elevation has a lean-to service stair addition creating a service court below. A first-floor corridor is supported by cast-iron columns at the angle of the two wings. Two rear windows break the eaves on the first floor of the west wing, and are likely enlarged. The interior has not been inspected.

Two outbuildings of random rubble, heavily altered and currently used as stables, stand nearby. One is two-story and three-bay, with a window on the south gable including a dove ledge above, and a red pantile roof, with a brick stack connected by a rubble wall to a piend-roofed two-story building to the south. The southern building has a tall doorway and a first-floor door on the north gable, also with a red pantile roof.

Rubble garden walls with tufa coping enclose the gardens and orchard, including a gateway to the front garden. A small rubble wellhead building is situated within the garden to the north of the house. Fragments of a rubble building built into the garden walls, popularly known as "John Knox's Kirk", are also present.