In 1827 Estudillo built a large L-shaped adobe house for his father on land granted by Governor José María de Echeandía .

Estudillo married María Victoria Dominguez (July 28, 1800[3] – October 19, 1875) in the Presidio of San Diego on March 1, 1824.

[4] She was the daughter of María de los Reyes and Sergeant Cristobal Dominguez, grantee of Rancho San Pedro.

Estudillo died in 1852 and is buried at El Campo Santo Catholic Cemetery in Old Town San Diego.

In his biography in Smythe's History of San Diego, he is described as "a man of excellent character and large influence.