The first question on any Heights shade structure is simple: do you want shade, or do you want to stay dry? An open-slat pergola filters sun and frames a space, but it does not keep rain off. A solid patio cover does, and it also creates a roof’s worth of water that has to go somewhere on a flat lot. Louvered and retractable systems sit in between and add motors and controls to maintain.
From there the decisions are material, attachment and wiring. A freestanding structure avoids tying into an old roofline; an attached cover can feel like part of the house but needs careful flashing and a structural connection the existing wall can carry. Fans, lights and outlets are far easier to plan before posts go in than after.