The Morton Hall With Boundary Wall, 123 Main Street, Newmilns

The Morton Hall, located at 123 Main Street in Newmilns, is a public hall built in 1896 by Arthur Harrison. It is a single-storey, six-bay structure designed in the Jacobethan style, featuring a roughly rectangular plan with a lower two-bay section on one side. The hall has an advanced gabled porch, two crowstep-gabled windows, a copper vent on the roof, and a mid-20th century flat-roofed brick addition at the rear. The exterior is constructed from red Ballochmyle sandstone ashlar, with a base course, cill course, and eaves course. Buttresses divide the bays on both the front and rear, and the windows are transomed and mullioned bipartite types with arched lights set in moulded rectangular margins.

On the south elevation, which is the principal facade, the crowstep-gabled porch is advanced to the left and features a two-leaf timber panelled door with a three-light fanlight above. A tablet inscribed "THE MORTON HALL" in raised letters is positioned above the door, framed by a Jacobethan style pilastered architrave that supports an armorial device with a scrolled pediment. Decorative side buttresses enhance the porch. To the right and in the two central bays, there are transomed, mullioned windows, with slightly taller windows that break the eaves in the inner left and right bays, also featuring crowstepped gables and shouldered side buttresses. The lower wing to the right includes a timber panelled door and a canted bay window that also breaks the eaves.

The east elevation has a shouldered stack at the centre of the wing, flanked by transomed lights, and a small bipartite window at the gable apex of the main building, with a brick addition to the right. The north elevation features five bays divided by buttresses, with an advanced gabled bay to the right that has a bipartite window and a flat-roofed extension in front. The west elevation shows an end gable with a bricked-up door in a roll-moulded architrave to the left, predominantly featuring square-pane leaded lights. The ashlar-coped skews have skewputts, and there is a corniced stack with red clay cans. The roof is covered with graded grey slate and terracotta ridge tiles.

Inside, the main hall has a trussed ceiling and a timber stage, while the council room features a Jacobethan style chimneypiece. Timber panelled doors are found throughout the building. A low coped sandstone boundary wall surrounds the property to the south.