The arithmetic, with the assumptions showing. A modest commercial building has about 60 pieces of equipment. Transcribing each nameplate from a phone photo into a record — finding the right photo in a roll of two hundred, typing the fields, tagging it to a room — runs four to eight minutes a unit. At $100 an hour for the junior doing it, that is $400 to $800 of typing per survey. Reconciling the result against the schedule and sorting photos to the plan is another two to five hours: $200 to $500.
Then the one everybody remembers. A unit on the schedule that nobody photographed is a return visit: half a day of engineer time plus travel, $450 to $900 when it happens, before anything gets redesigned around a room nobody saw.
Call it $700 to $1,700 a survey. A firm running six a month is spending five figures a month on work this removes, against $1,200 for the plan that covers it. Those are our assumptions, not your numbers — the pilot exists to replace them with yours.