A final walkthrough is a final check or inspection that you do before completing a task or project to ensure everything is correct and in place. Full definition
They were there when school founders did the final walkthrough of the campus with construction crews, when teachers reported for their first paid day of work, and when parents dropped their kids off for the first time. (civilbeat.org)
However, the final walkthrough is your last chance to -LSB-...] (northpointe.com)
There's just one more hurdle to clear before you head to the closing table: the final walkthrough. (northpointe.com)