Most suburbs on the North Shore are one thing. Artarmon is three, and the boundaries are hard lines you can see on a map: the North Shore railway on one side, the Gore Hill Freeway on the other.
East of the line is the old suburb. Subdivision of the Artarmon Estate started in 1910 but the boom did not really arrive until the 1920s, which is why the streets there are so consistently Federation, followed by Californian bungalows through the 1930s. That stock is intact enough that the National Trust recognised it as an Urban Conservation Area in 1989, and it is protected through Willoughby’s planning controls today.
West of the line is a completely different building era. From the 1960s, and formalised by the 1969 West Artarmon Residential Area Redevelopment Plan, the western side was rebuilt as apartments. That means strata: common property switchboards, rising mains, car park lighting and emergency exit testing rather than power points and downlights.
South of the Gore Hill Freeway is the industrial estate, and it is the reason Artarmon has an electrical profile no other lower North Shore suburb has. It started as brickworks in the 1880s, had 42 factories by 1951, and from 1956 became the base of the Australian film and television industry. The ABC opened at Gore Hill that November. SBS is still on Herbert Street and Fox Sports on Broadcast Way.
Three eras, three sets of problems. Knowing which Artarmon you are standing in tells us most of what we need before we arrive.