[3] Philip V granted him an annual pension of 500 ducats in 1740, a decision influenced by the recommendation of Spain's minister plenipotentiary in Rome, Cardinal Troiano Acquaviva d'Aragona.
[4][5] In 1758, he was appointed to Rome as the secretary of the Accademia di San Luca,[6] due in part to reports he wrote about the functioning of the academies in Europe, and that should serve as the basis for the drafting of the statutes of the Madrid cenacle.
As director, he sometimes managed to obtain small pensions for struggling Spanish artists newly arrived in Rome.
In 1760, was appointed for a time painter of the chamber (pintor de cámara) of King Ferdinand VI.
Preciado de la Vega's career as a painter in Rome was closely linked to religious institutes and the Spanish diplomatic corps, in a very demanding and competitive artistic environment.