In 1935 Ades, then a senior maggid shiur at Yeshivat Ohel Moed, was offered a seat on the Sephardic Beit Din of Jerusalem by the Rishon Le-zion, Rabbi Yaakov Meir.
Ades filled this role until 1943.
In 1944, he was asked to sit on the Sephardic Beit Din of Tel Aviv, and at the same time was appointed as the Rav of a Syrian synagogue in Tel Aviv.
He would spend the entire week in Tel Aviv, only returning to his home in Jerusalem for Shabbat.

In 1945 he was appointed as av beit din of the Sephardic Beit Din of Jerusalem.
In 1953 he was asked to serve as Chief Rabbi of Israel, but declined.
In 1955 he accepted a seat on the Beit Din HaGadol (Rabbinical High Court), first as a dayan and later as av beit din.
His fellow dayanim included Rabbi Betzalel Zolty, Ashkenazi Chief Rabbi of Jerusalem, and Rabbi Yosef Shalom Elyashiv.
Ades presided on the High Court until his death in 1963.
In 1935 Ades, then a senior maggid shiur at Yeshivat Ohel Moed, was offered a seat on the Sephardic Beit Din of Jerusalem by the Rishon Le-zion, Rabbi Yaakov Meir. Ades filled this role until 1943. In 1944, he was asked to sit on the Sephardic Beit Din of Tel Aviv, and at the same time was appointed as the Rav of a Syrian synagogue in Tel Aviv. He would spend the entire week in Tel Aviv, only returning to his home in Jerusalem for Shabbat.
In 1945 he was appointed as av beit din of the Sephardic Beit Din of Jerusalem. In 1953 he was asked to serve as Chief Rabbi of Israel, but declined. In 1955 he accepted a seat on the Beit Din HaGadol (Rabbinical High Court), first as a dayan and later as av beit din. His fellow dayanim included Rabbi Betzalel Zolty, Ashkenazi Chief Rabbi of Jerusalem, and Rabbi Yosef Shalom Elyashiv. Ades presided on the High Court until his death in 1963.
Yaakov Ades