Mason AI is an AI plan review software is built around a simple workflow: get the plans into Mason AI, work through its prioritized checklist, close the gap against your own markup, then draft and send. The platform checks residential plans against the CRC, CPC, CEC, CMC, CalGreen, and CWUIC codes with full coverage, citing the exact section behind every flagged item so reviewers never need a separate code book open. Comments Mason AI drafts sixteen per letter, on average arrive already formatted for the reviewer's office and remain fully editable before anything is exported to Word. Overriding a Mason AI finding feeds back into how the system handles similar cases afterward, and every override or acceptance stays under reviewer control. With 96% expert agreement on its code checks, Mason AI's plan review software is designed to speed up residential review without asking teams to change how they already work.