A structural bracket assembly for a residential or commercial trellis. The structural bracket assembly comprises an aluminum mounting plate securable to a vertical wall having a support member extending outwardly therefrom at an angle and terminating with an end plate. Plywood is fastened to the top and the bottom of the support member. Roofing material is fastened to the upper piece of plywood, and a soffit panel is secured to the lower piece of plywood. A frieze board is secured to the vertical wall beneath the lower piece of plywood to conceal the mounting plate, and a hollow rafter tail is secured to the soffit panel. In one embodiment, the rafter tail is spaced apart from a support bracket by a cross beam.