I have had pretty good results from focus stacking with architecture and architectural models (and models in architecture...see below). It works best when there are zones of like focus, such as foreground, mid ground and background without something like a large tree in the foreground piercing the zones of focus. Like a view camera tilt, It also works well when there is single plane that needs to be brought in focus.
Example, shot for an upcoming show, three frames, camera horizontal, with a Canon 45 T/S, top of diverging beams, cross beams and model. The top two frames were shot first and then on the third many positions for the model were tried over the course of say an hour. The light changed a little but the stack still worked after tweaking the exposure on the model frame. IME, I couldn't have done better with a view camera.