A concealed anchor system that installs a post on a support surface. The concealed anchor system includes a stud, a sleeve, and setting material. The stud is attached to the support surface. The setting material is disposed between, and is attached to, the stud and the sleeve. The sleeve is disposed around, and is attached to, the stud, and is received by the post so as to install the post on the support surface. In a first embodiment, the support surface is wood, and in a second embodiment, the support surface is concrete.