Influenced by Baldassarre Peruzzi, he developed architectural skills and began his career with the reconstruction of the church and convent of Santa Marta in 1535.
He collaborated on notable projects, including the decoration of Porta Nuova for Emperor Charles V's visit in 1536.
[1] Appointed chief architect of the Republic of Siena in 1537, Lari focused on fortifications and coastal towers across Tuscany, supervising works in cities like Sarteano, Sinalunga, and Orbetello.
In Grosseto, he contributed to the redesign of the cathedral's interior and facade elements and restored the city walls alongside Giorgio di Pietro in 1541.
[2] Lari also worked on Maremma's defenses, including sites in Pitigliano, Talamone, and Porto Ercole, where he notably designed the Porta Nuova.