Baulkham Hills is a suburb in the Hills District of Greater Sydney, in the state of New South Wales, Australia. It is 30 kilometres north-west of the Sydney central business district within the local government area of The Hills Shire. Baulkham Hills is the administrative seat of The Hills Shire, an outer metropolitan shire within Greater Sydney. The suburb is also the most populous within the Hills Shire. It is known colloquially as "Baulko". Baulkham Hill’s Norwest Business Park is home to several Fortune 500 companies, a number of shopping centres, high-rise buildings, and industrial and recreational spaces. Geography Baulkham Hills is predominately a residential suburb of the Hills District, with Norwest Business Park in the northern part of the suburb. Baulkham Hills Junction is the intersection of three major roads; Windsor Road, Old Northern Road, and Seven Hills Road. It is also bound by Old Windsor Road and the North-West T-way in the west; and the Hills Motorway in the south, forming part of the National Highway. History The land that is now called Baulkham Hills was originally home to the Bidjigal people, who are believed to be a clan of the Darug people, who occupied all the land to the immediate west of Sydney. The best-known Aboriginal person from that time is Pemulwuy, a Bidjigal leader who led the Indigenous resistance movement against the British forces, including sacking farms in Castle Hill, before his eventual capture and execution by the British militia. The Bidjigal people are today commemorated by Bidjigal Reserve which straddles the suburbs of , Baulkham Hills, , and . The first European settler in the Baulkham Hills Shire was William Joyce, who arrived in Australia in October, 1791. In December, 1794, he was given a grant of 30 acres (121,000 m2) in what became Baulkham Hills. He built a farmhouse on this land, but it was damaged by a fire in 1804, so he rebuilt it. The house still stands; however, it is now on a 2,055 m2 property which backs onto Old Windsor Road. The suburb was largely made up of land grants until the mid 19th century, when many of these started to be subdivided into farms. This was accelerated by the construction of the Rogans Hill Railway Line. Urban developments were expedited from the 1960s. The name Baulkham Hills was given to the area by Andrew McDougall, a settler from Buckholm Hills,