The regulations of 'Kuikaeshiken' (a right to take back title to property) and 'Nenkiho' (a legal principle for the statute of limitations on land in possession, which developed under bukeho) are considered as unique regulations to samurai family (there is also other theory).
「悔返権」・「年紀法」の規定は武家独自の規定とされている（異説もある）。