Cogan used to be connected to Llandough by Andrew Road which is now closed off to all but public buses. Conversely Pill Street was a dead end until the 1970s when a connection was driven through, up the slope to the newly built Cowslip Estate housing development. Apart from the addition of a street to the garden village in the '90s, no new housing built in the village since the early 1970s when the Cogan Garden Village was completed, on the site of the main Penarth brickmakers and any further housebuilding is prevented through lack of space to develop; The village is bounded on two sides by the railway tracks, by the Cowslip slope on another and by the "Poets Estate" on the fourth side. The only land now not built on is the sports fields attached to the Penarth Leisure Centre, land that originally formed the common land of the village green where small holders grazed their animals in medieval times.