Shingles, flashing, valleys, ventilation and attic stains drawn up close, so you know what to flag from the ground and from the attic hatch.

Double taps, missing bonding, reversed polarity and open junction boxes: the panel and outlet defects you need to name correctly in a report.

Relief valves, drain slope, backflow, flue connections and condensate lines: the plumbing and heating defects that get mixed up, drawn side by side.