Main Building (North & South) at Haberdashers' Monmouth School for Girls

The Main Building (North & South) at Haberdashers' Monmouth School for Girls is constructed from squared red-brown sandstone rubble, featuring Bath stone dressings and a plain tiled roof with stone chimneys. It is designed in a largely symmetrical Tudor/Jacobean style and has two-and-a-half storeys. The main façade faces south and consists of nine bays with mullion-and-transom windows, where the second, central, and eighth bays project outward. The ground floor windows are predominantly 4-light with a king mullion, except for the 3-light windows in bays 1 and 9. The first floor mirrors this arrangement, with a 3-light window above the entrance and 2-light windows in bays 1 and 9.

The central bay features a four-storey gabled tower with octagonal buttresses, a 4-centred doorway adorned with relief spandrels, a 3-light window above, and a 2-light window on the level above that. The top level includes a 3-light window with the Haberdashers' arms obscuring the lower lights, a heraldic shield in the gable above, and gargoyles at the parapet. Each side of the tower has two crow-stepped gabled wall dormers, each containing a 4-light king mullion window. There are four large groups of octagonal shafted stone chimneys, with two on either side. To the right, a stepped back, three-storey block with two crow-stepped gables connects to the main building through a recessed section with a doorway. This block has four bays featuring paired single light windows, with the gabled section set forward. The west return has a crow-step gable and an additional shaped gable at the rear.

The rear elevation presents a simplified version of the same style, with projecting bays, single and 2-light windows, and a multi-gabled roofline. At right angles to this is the dining hall block, which has four large flat-topped dormers (with modern glazing to the east) and a modern extension to the east. Attached to this is a two-storey service block in the same style, featuring two gables facing east, which have 4-light mullion-and-transom windows on the upper floor.

The interiors observed include the entrance, main stair, board room, and dining hall, all of which are plain. The dining hall boasts a wide span 4-bay roof with traceried trusses, large ties supported on brackets, vertical struts to the main rafters, and an arch-braced centre.