The cause for Dalla Costa's canonization opened on 26 January 1981 under Pope John Paul II after the Congregation for the Causes of Saints issued the edict of "nihil obstat" (nothing against the cause) and titled him as a Servant of God.
On 22 December 1981 the diocesan phase for the cause opened and closed sometime later.
This investigation was held in the Florence archdiocese and the C.C.S. later validated this investigation on 19 November 1993 before receiving the Positio dossier from the postulation in 2007.
This dossier was an extensive collation of documents and testimonies collected throughout the diocesan process.

The board of theologians assented to the continuation of the cause after investigating the dossier in their meeting held on 29 November 2016 while the cardinal and bishop members of the C.C.S. also approved it later on 2 May 2017.
Dalla Costa was named as Venerable on 4 May 2017 after Pope Francis confirmed that the late cardinal had lived a model Christian life of heroic virtue.
The cause for Dalla Costa's canonization opened on 26 January 1981 under Pope John Paul II after the Congregation for the Causes of Saints issued the edict of "nihil obstat" (nothing against the cause) and titled him as a Servant of God. On 22 December 1981 the diocesan phase for the cause opened and closed sometime later. This investigation was held in the Florence archdiocese and the C.C.S. later validated this investigation on 19 November 1993 before receiving the Positio dossier from the postulation in 2007. This dossier was an extensive collation of documents and testimonies collected throughout the diocesan process.
The board of theologians assented to the continuation of the cause after investigating the dossier in their meeting held on 29 November 2016 while the cardinal and bishop members of the C.C.S. also approved it later on 2 May 2017. Dalla Costa was named as Venerable on 4 May 2017 after Pope Francis confirmed that the late cardinal had lived a model Christian life of heroic virtue.
Elia Dalla Costa