As an archeologist in Jerusalem Dr. Da‘adli has studied the Mamilla cemetery, the al-Qaymuriyya Mausoleum in Jerusalem, the quarters around the Cotton Merchants Marketand the Beit HaBad Market. As an art historian, he wrote his doctorate on the school of painting that developed in the city of Herat in today’s Afghanistan, at the time of Sultan Husayn, last of the Timurid rulers.

Recently he has been researching the wall paintings of the Umayyad Palace in Jericho, trying to reconstruct a series of paintings there that have never been properly published since the excavations done under the British Mandate. Another recent research project concerns Lod/Ludd, where local excavations have been taking place for years. In this project, he is trying to understand the city’s civic structure towards the end of the Ottoman period.

Dr. Da‘adli was a Buber Scholar from 2012 to 2015. In 2016, he received a fellowship from the Council of Higher Education to encourage young researchers who have been accepted to teach in Israel's universities.