Situated on a peninsula adjacent to Middle Harbour, Killarney Heights is one of a handful of suburbs that falls within both the northern beaches and 'The Forest' district. Originally Killarney Heights formed part of Forestville and was not significantly developed until the 1950s and 1960s. It takes its name from a picnic ground that was constructed around the edges of Middle Harbour on the site where Mosman Rowing Club now stands. The ground was named after Killarney in Ireland.
Killarney Heights provides a few local conveniences, including a café, bakery, fruit shop and hairdressers. More comprehensive shopping facilities can be found in the adjoining suburbs.
Killarney Heights is 12 kilometres north east of Sydney's CBD, with a population of Approimately 1600 homes. Forest Coach Lines and the NSW Government bus service the suburb, with routes to and from Chatswood, the city as well as the northern beaches. The nearest train stations are in Roseville and Chatswood.
A few of the suburb's locations even enjoy panoramic Middle Harbour views. Properties range from exclusive prestige homes to unrenovated originals.
Residents of Killarney Heights enjoy access to swimming, tennis, soccer, rugby and netball facilities. There is a choice of golf courses nearby, not to mention walking tracks and beautiful parklands.
The area is most notable for its surrounding native parklands, which are rich with native flora and fauna. The Roseville Bridge is also a significant nearby landmark. Original built in 1924 as a two lane bridge, it was upgraded to a six lane bridge in 1966 to meet population growth in the suburbs east of Middle Harbour.
Killarney Heights has its own primary school, pre school and high school, all of which are well regarded. The primary school features an English/French bilingual program, which has made the area attractive to French speaking parents. The high school is comprehensive and coeducational with an outstanding track record of academic achievement.