Verbal agreements fail as change order documentation because they are unenforceable (no written record means no reliable evidence if parties disagree), imprecise (verbal descriptions are ambiguous and produce different interpretations), and invisible (costs accumulate without the client ever seeing a running total). The most common and expensive construction dispute is the verbal scope addition: the contractor performed work they believe they were asked to do; the client never consciously authorized additional spending. Neither party is dishonest — both are accurately describing their understanding of a conversation that produced different expectations. A written change order, signed before work proceeds, makes this dispute structurally impossible. RainFire Builders requires written change orders on all scope changes without exception — not because it’s burdensome, but because the 20 minutes it takes is the single best investment in project outcome available.