Kurokuwa also indicated the unit of kurokuwa (construction workers) which was one of the organizations of Edo bakufu (Japanese feudal government headed by a shogun,) consisting of kurokuwa who had been fudai (hereditary vassals) since the era of Matsudaira clan of Mikawa Province and were in charge of repairing work in the Edo-jo Castle, transmission of orders issued by the bakufu, miscellaneous affairs such as zoritori (sandal bearer, equivalent to a batman,) and whose status was komono (a lower servant) or chugen (a rank below common soldier) under the control of wakadoshiyori (a managerial position in Edo bakufu).
江戸幕府の組織としての黒鍬(組)も三河国松平氏時代からの譜代の黒鍬から構成されており、若年寄支配で小者･中間として江戸城内の修築作業や幕府から出される諸令伝達や草履取り等の雑務に従事した。