For private plan reviewers, plan examiners, and plan checkers, Mason AI offers AI plan review software that automates the first pass of residential plan check. Its computer-vision model reads floorplan elements at 97% accuracy, then checks the plan against full-coverage codes including the CEC, CPC, Title 24 Energy Standards, CWUIC, CMC, CalGreen, and CRC (Architectural) while flagging local amendments and local preferences as items needing reviewer judgment. Code failures are surfaced first in the interface, with passed and non-applicable items tucked behind a toggle to keep the screen focused. Every flagged item carries a direct link to its code section, and Mason AI's embedded code library means reviewers can verify or challenge any finding without leaving the screen. As an AI-powered plan review software, Mason AI drafts the comment letter reviewers refine, edit, and own the final version before it goes to the jurisdiction