Hair Street branches off Moores Valley Road near The Village. Despite its proximity to shops, the street feels secluded, nestled within a narrow, bush-clad valley. At the top of the street is the Wainuiomata Scenic Reserve, a 170-hectare area of native bush and hills, crisscrossed by small creeks that feed into Hair Stream. The reserve is now managed by the Department of Conservation (DOC). Prior to becoming a reserve, this area functioned as a water catchment, supplying drinking water to the local community from the early 1940s until its closure in the early 1960s.
Hair Street could have been named after a Lawrence Carlton (Carl) Hair (1904–1976) who was a member of the Wainuiomata Domain Board from 1944 to 1953. In the 1950s, he also served as the Secretary and Treasurer of the Wainuiomata Progressive and Ratepayers Association for six years. Another figure, William Hair (1864–1949), was a bondholder in the Wainuiomata Development Company, though no known family connection exists between the two.