Glanbrogan Hall and Brogan-fach.

Glanbrogan Hall and Brogan-fach are a three-storey building, dating from the 18th century, that has been divided into two separate houses. The main building faces south, with a long rear wing extending from it. The roofs are slate, with tile ridges and chimneys constructed from stone or brick.

The west half of the front elevation, known as Glanbrogan Hall, features timber framing on the ground floor, rising to a height of one storey and consisting of three panels. Above this is two storeys of rendered masonry, though it is unclear if the original timber framing extends to its full height. A modern porch has been added to the front right. The windows are sash windows: the top storey has eight-pane horizontally sliding sashes, the first storey has 16-pane sashes, and the ground floor has four-pane sashes. The side elevation to the left is built from local grey/brown stone. The rear elevation incorporates a small dormer window, smaller windows aligned with the roof, a rooflight, a modern rear door, and a small side window. Catslide extensions project into the north-west yard, one from the rear of the main range and one from the side of the rear wing.

The east half, Brogan-fach, slightly projects forward and is rendered and painted white. The front windows have been restored, with the upper storey featuring eight-light windows, similar to those found in Glanbrogan Hall. The east gable wall is rendered, seemingly rebuilt in brickwork, and features a low lean-to addition to the east.

The rear wing extends two units north. The first unit is rendered on the east side and slate-hung on the west; the second unit, referred to as the ‘butler’s cottage’, is constructed from irregularly shaped stone. The front side of this rear extension has an eight-pane casement window above a 16-pane sash window in the first bay, with a porch and a window with modern glazing in the second bay. The outer bay includes an eight-pane sash window above a 16-pane sash window, a boarded door and a 16-pane casement window to the ground storey, with other windows being modern small-pane units.

Inside Glanbrogan Hall, a fine dais partition remains at the west end of the hall, featuring posts and panels with a single door on the south side. The top beam of the partition is stop-chamfered over the panels and bears carpenter's marks.