In the late 1880s, Felix Parent was the initial pioneer settler, acquiring an acreage now fronted by the gas station. In the early 1890s, the Ross Ranch, which encompassed the lake, was described as the largest fruit ranch in the lower Province.
Arthur Wellington Ross is believed to have headed the syndicate that owned the property. The venture failed and the orchard was abandoned. The Squakum Ranch, at the end of present Malcolm Rd, was a smaller commercial orchard on the banks of the
Fraser River.
Alex Malcolm bought the property in 1892. In that era,
sternwheelers collected milk and cream at the landing. Tom Wilson was the inaugural postmaster 1892–1895. Wilson, the Ross Ranch manager, operated the post office from his home. When the ranch ceased to be viable, the post office also closed that yearend. After
World War I, a number of veterans took up small ranches, but most moved on. In the early 1920s, Charles and Miriam Bell, who arrived and farmed the Parent property, were among the few families who remained as permanent residents during the 1930s. In 1937, Alex Malcolm sold his property to the Kilbergs. In 1951, his cremated ashes were scattered upon the Fraser. G. Robert (Bob) Webster established a general store around 1939 and became postmaster when the post office reopened in 1940. The store property was on the west side of the highway at the south end of the lake. While postmaster 1947–1959, Evelyn Dvorack managed the store, gas pumps, and tourist cabins they had built. In the 1960s, Lake Errock became a predominantly residential area of vacation properties when subdivisions were created. On the north corner of Watkins Rd, the one-room elementary school existed 1957–1982. On the south corner, the church erected in 1961, which affiliated with the Mennonite Brethren in 1964, became a satellite congregation of the Central Community Church in Chilliwack in 2017. In 1982, the fire hall opened behind the church. ==Roads==