His father having died, Francisco was apprenticed at the age of thirteen to Pedro de Villadiego, a carpenter and carver.
Herrera being indisposed, in June 1588, Mora went to Simancas and designed the patio, doorway and the main staircase of the expanded fortress where the king wished to move the royal archives.
On June 7, 1591, the king signed his appointment as master builder fpr the renovations at the Royal Alcázar of Madrid.
[1] In July 1595, the Madrid city council commissioned Mora to design improvements to the conditions of the classrooms of the Theatines.
On August 13, 1598, the Royal Council sent the King for approval a design by Mora for the façade of the convent of Santo Domingo in Valencia, which the Marquis of Denia had requested, according to which the work was built.
In 1599 he was commissioned by the royal Council to design three monumental arches for the formal entry of Queen Margaret, newly married to King Philip III.
The design was one of the most imitated in the religious buildings of the seventeenth century and was adopted as a model for Discalced Carmelite construction.