Harish was founded by Nahal in 1982 and converted into a kibbutz in 1985. Katzir was founded by the Farmers Union of Israel. The villages were merged in 1993. The master plan of Harish was prepared by the architecture firm Mansfeld-Kehat Architects. The plan calls for the expansion of Harish to Highway 65 in the north, and Baqa-Jatt in the south.
Initially Harish was envisioned as a Haredi city offering low-cost housing to this sector.In 2012, a secular buyers group organized to bid on lots zoned for 400 housing units there.