Pressure washing thatmakes it look new.

Not if it is done at the right pressure. Stucco needs a wide tip held well back, or a soft wash under 500 PSI with cleaning solution doing the work. The damage people have seen usually comes from a narrow tip held close, which opens up the finish and drives water behind it.

Pressure washing uses force, typically 1,300 to 4,000 PSI, and suits hard flat surfaces like driveways and sidewalks. Soft washing runs under 500 PSI and lets the cleaning solution do the work, which is what delicate surfaces need: stucco, painted timber and anything with a coating.

That is zebra striping, and it means the last job was done with a wand rather than a flat surface cleaner. A wand cleans in overlapping arcs, so the passes show. A surface cleaner covers the slab at a consistent distance and pressure, which is why the result is even.

Not with the right preparation. Desert landscaping right against the house means vegetation gets pre-wet and rinsed down afterwards so nothing sits on the leaves, and runoff is directed away from pool water. Point out anything you are particularly worried about before we start.

After, always. Washing the house or roof sends runoff down over the glass, and that runoff is carrying everything that just came off the walls. Doing the windows first means doing them twice. If you want both, the order matters more than the timing.