The competition to be awarded the commission was tough and Brunelleschi again had to compete against Ghiberti. In 1420 Brunelleschi was awarded the commission and construction began.
Ang kumpetisyon na iginawad ng komisyon ay matigas at Brunelleschi muli had upang makipagkumpetensya laban Ghiberti. Brunelleschi sa 1420 ay iginawad sa mga komisyon at construction nagsimula.