The street lamps on the square are of two different designs. Those on the outer sides, in front of the houses are seemingly of the style called "The Scotch Standard", dating from 1903 to 1920 when Dublin streets were being electrically lit as part of the Pigeon House scheme. On the inner (park) side of the street, a slightly more modest design is used, apparently consistent with a more recent 1940–50 design. These designs are all 9 metres tall. Prior to the installation if public lighting schemes, most houses would have had a cast iron gas lamp holder atop the railings at the bottom of the granite steps. As of 2020 few of these remain intact around the city with notable examples at nearby North Great Georges' Street and Great Denmark Street.