In 1225, when Suetsugu took the position of kanmu after OZUKI no Kunimune (a child of Takamoto) of the Mibu Kanmu family died, he formed the relationships with Michiie KUJO to build a solid foundation of the Omiya Kanmu family who had been liable to be almost overwhelmed by the Mibu Kanmu family, and after that he kept the position for 21 years until he died.
元仁元年（1224年）に壬生官務家の小槻国宗（隆職の子）が没すると官務の地位に就くと、九条道家と結んで壬生官務家に押されがちであった大宮官務家の基礎を固め、以後死去まで21年間にわたってその地位を保った。