Maraylya is a Sydney suburb in the Australian state of New South Wales. Maraylya is located 43 kilometres (27 miles) north-west of Sydney's central business district, in the Hills Shire and the City of Hawkesbury local government areas. Cattai Creek runs through Maraylya on the north and east sides. Maraylya is mostly made up of small-acreage holdings that are utilised as hobby farms or for maintaining horses for enjoyment. Home Builders in Sydney.