Fisher Heck worked closely with the Texas Historical Commission to ensure that the preservation treatment of José Antonio Navarro's 1850's home and the addition of a new restroom facilities building would be in keeping with national preservation guidelines. New restroom and storage facilities were carefully integrated into the historic grounds. As a result of the re-organization of the site, a larger central courtyard was formed and the relationship between new and existing buildings was enhanced. Today, the Casa Navarro State Historic Site proudly educates visitors on José Antonio Navarro's life and role in Texas history.