Following his father Korehira and older brother TAIRA no Masasuke, he extended his influence in Ise Province and possessed Kotsukuri no sho-manor (Ichishi County, Mie Prefecture).
父・維衡、また兄といわれる平正輔らの後を受けて伊勢国において勢力を伸張させ、木造荘（三重県一志郡）などを領有する。