Loudoun Hall, New Bridge Street, Ayr

Loudoun Hall, located on New Bridge Street in Ayr, dates back to around 1513, with a northern wing added in 1534 and later alterations. The building underwent refurbishments by Robert Hurd from 1952 to 1957 and by ARP, Lorimer and Associates in 1997 and 1998. It is a two-storey and attic, L-plan house constructed of rubble.

The southeast elevation features a square-headed entrance with a timber door located to the right of the northern wing section. To the left, there are two pairs of stair windows leading to a boarded bay. The original section has single windows at the first and attic floors, positioned in the gablehead.

On the northeast elevation, the northern wing section has a blank gablehead. An oak balcony frame is present at the first and attic floors on the outer left, along with two timber doors on both floors. There are relieving arches above two off-centre timber doors at the ground floor, flanked by single windows. The first floor has two single windows leading to the hall, with a relieving arch to the right.

The northwest elevation has a single window at the ground floor and two single windows at the first floor, along with a two-light dormer in the attic of the northern wing section. The original (higher) section has two single windows at the ground floor, a single window at the first floor, and two single windows in the attic.

The windows are timber boarded and leaded, with some glass block openings. The roof is covered with grey slate, featuring rooflights, stone skews, coped gablehead stacks, and circular cans.

Inside, there are barrel-vaulted storage rooms on the ground floor. A narrow stair from the original section leads to the main hall on the first floor, as the original main access stair has disappeared due to later alterations. A new non-combustible metal staircase provides access to the entrance in the northern wing. The main hall features a great fireplace on the southeast side, with moulded stone shafts and an ogee-shaped aumbrie on the northwest elevation. High windows and timber panelled entrances are present, and a panel above the fireplace, dated 1665, bears the arms of the Kings of Scotland, England, France, and Ireland. This panel was formerly hung in the Newton-on-Ayr Town House, which was demolished in 1967. The attic floor rooms were previously used as quarters for servants.