Post Office, 29 Eglinton Street, Beith

This building is a Post Office, dating from 1897 and originally built for the Post Office. It is a two-storey tenement block of five bays, designed to accommodate offices on the ground floor and flats above. The front has a shopfront divided into nine bays by pilasters, featuring a timber fascia, a dentilled cornice, and a pair of timber panelled doors in the centre of the left and right sides. Three bipartites (two-part windows) are located on the first floor, with the outer bays having a shallow curve and three lights. Central corniced stacks rise from the wallhead, and an arch is framed with the date '1897' and includes a painted Royal coat-of-arms. A moulded eaves cornice runs along the top of the building, with a painted finish to the ground floor, polished ashlar to the first floor, and rubble to the rear.

The rear elevation is two storeys high, with a later brick-built lean-to addition. To the left of the rear is a single-storey wing with a slated, monopitched roof. The rear fenestration is irregular.

Inside, the common close features a barley-twist cast-iron balustrade with a timber handrail, and a cream tiled dado with a brown foliate band. Timber panelled doors lead to a first-floor room with a decorative cornice. A small, original mahogany chimneypiece remains in a front ground floor room, which has timber v-groove boarded walls. The shopfront features plate glass windows set in timber surrounds, while the first floor has timber sash and case plate glass windows. The roof is covered with grey slates, and cast-iron rainwater goods are in place.

The building, marked on an Ordnance Survey map dating from 1910, is now used for sorting mail.