For this reason, the early honjo law was often constrained by court noble law and Jisha-ho (laws regarding shrines and temples) that governed the classes to which the honjo had originally belonged as the influential families, as well as by regionally specific regulations, such as local common law or Kokurei (a common law based on actual state of affairs in each area), which was enacted by the kokuga.
このため、初期の本所法も本所である権門の出自に属する公家法や寺社法、それに現地の慣習法や国衙が定めた国例などの地域独自の規定に拘束される場合が多かった。