Telephone Exchange, 243 Centre Street, Glasgow

The Telephone Exchange at 243 Centre Street in Glasgow, built around 1935, is a monumental neo-Baroque structure featuring three storeys and a basement, along with an attic. It has a rectangular plan that measures three bays by seven bays. The building is constructed of red brick, with sandstone ashlar primarily used for the basement and attic. It has a deep base course, an eaves cornice, and a parapet.

On the west elevation, which is the principal façade, there is an off-centre wide recessed doorway flanked by a pair of Doric columns that support an exaggerated dentil moulding. Above this entrance, large tripartite windows are located on the first and second floors, with a narrow rectangular tripartite window in the attic. To the left, there is a slightly advanced and lower one-bay section featuring a round-arched gated entrance with a keystone at the ground level. This section has bipartite windows on the first and second floors, with a festooned keystoned oculus in the attic, all set in a shallow recess. To the right, another slightly advanced and lower single bay section includes a basement opening and a bipartite window above it. The second floor features a bipartite window with a festooned keystoned oculus above, also set in a shallow recess. The far right of this elevation has a narrow return of the south elevation.

The south elevation has advanced mirrored outer bays with round-arched keystoned windows on the first floor and bipartite windows in the attic, all set in shallow recesses. This flanks a slightly lower five-bay section with bipartite windows on the first and second floors, and narrow rectangular single light windows above.

The east elevation is mostly obscured by an adjacent warehouse and is constructed of brick. The north elevation features six bays, with an advanced single bay section on the far right, made of brown brick.

The building has predominantly replacement pivot windows, although some original glazing remains in the attic. The interior is in poor repair, with a concrete floor on the ground floor and damaged herringbone parquet flooring on the first floor. The stairwell is tiled, featuring a narrow upper band of small green and red tiles.