Automated plan review that works the way a reviewer does
Upload a plan set, get a severity-ranked QA/QC report with references in minutes, then verify every finding with your own judgment.
Start a free review →PlanFlag is an AI-assisted quality-assurance aid for construction plan-set review. It reads your drawings, checks them against discipline checklists and the codes you work with, and returns a prioritized list of candidate findings (missing or inconsistent information, schedule and table discrepancies, cross-sheet coordination gaps) for a licensed professional to evaluate.
What it catches
- Internal inconsistencies: a value called one way on one sheet and differently on another.
- Schedule & table discrepancies: arithmetic and cross-references in beam, panel, and equipment schedules.
- Cross-sheet coordination gaps: the coordination issues that slip past sheet-by-sheet review.
- Code-reference checks: items checked against IBC, ASCE 7, ACI 318, AISC 360, NEC, NFPA, MUTCD and others.
- Missing information: the detail, note, or callout a reviewer expects to be present and isn't.
By discipline
PlanFlag applies discipline-specific checklists to each sheet:
One review, one price
Every review is the full review: each sheet read, then the set checked against itself, with comments ranked and kept to about the size of a reviewer's own markup. $1 a sheet, $50 minimum. A hold is placed on your card before the review runs and charged when it finishes; if the review fails, the hold is released.
Where the engineer stays in control
PlanFlag surfaces candidate findings for a licensed professional to evaluate. It does not perform engineering, and it does not seal, stamp, or approve anything. The engineer of record remains solely responsible for the design, and the reviewing professional remains responsible for every decision to act, or not act, on a finding. A clean or short report is not evidence that a set is complete or compliant; it describes only what was assessed.
The goal is the disciplined review a good reviewer already does: "here is what should be on this sheet, let me find it, and let me investigate the unexpected," run consistently and fast, with receipts.
Put it on your next set
Upload a plan set and get a prioritized, severity-ranked report in minutes, then verify every finding with your own judgment.
Start a free review