According to "Buke Shohatto" (code for the warrior households) issued in 1717, a joshu could repair building parts equal to or less than a tower, fence or gate after submitting an application and obtaining an approval; and, when a stone wall was broken, the joshu was supposed to report to bugyo (commissioner [in charge of repair and management]) and to receive his instruction.
享保2年（1717年）の『武家諸法度』によると、城主は櫓・塀・門以下は届出をし許可を得たうえで補修することが可能で、石塁・石壁が壊れたときは奉行に報告し、その差図を受けることとなっていた。