Abstract: A corbel for a wall including a corbel sleeve having a longitudinal passage for extending into the wall. At least one upright or vertically oriented elongate reinforcement member can be secured to the corbel sleeve and extend upwardly and downwardly therefrom for structurally engaging internal portions within the wall for structurally supporting the corbel sleeve. A corbel extension can have an insertion end and a support end. The insertion end can be inserted into the longitudinal passage of the corbel sleeve and secured therein. The support end can extend from the corbel sleeve and the wall, for example laterally, for supporting a load applied thereon.