In an effort to strengthen the political authority of the Imperial Court, after the War, Shinzei issued the Hogen edict, which imposed the Decree Restricting the Expansion of Private Estates, introduced regulations governing major temples and shrines, and restored the Imperial Palace.
乱後、信西は政権の強化に尽力し、保元新制を発して荘園整理令・大寺社の統制・内裏再建などを行う。