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One missed coordination issue can cost $10k–$100k+ in the field. PlanFlag costs less than one mistake.
Designed for the engineers who review, stamp, and defend the work.
Engineering firms reviewing full plan sets under tight deadlines
Multi-discipline teams coordinating across structural, civil, and MEP
QA/QC managers who need defensible documentation for every project
Engineers of Record who want consistent review across junior and senior staff
Issues that cost real money when they reach the field.
Catch missing connection details, incomplete schedules, unspecified materials, and documentation gaps across all disciplines in your plan set.
Prevents: RFIs, fabrication delays, field conflicts
Verifies design criteria against project location, checks load parameters, flags outdated code editions, and reviews requirements across IBC, ASCE, ACI, NEC, NFPA, and more.
Prevents: Plan review rejections
Cross-references design criteria across all sheets. Finds mismatches in loads, elevations, clearances, routing conflicts, and coordination gaps between disciplines.
Prevents: Coordination errors in the field
Every finding includes severity, code reference, rationale, and a clear recommendation.
Vasd does not match Vult conversion. Stated Vult = 123 mph and Vasd = 100 mph, but 123 × √0.6 = 95.3 mph. Either the ultimate or ASD wind speed is incorrect, affecting every pressure calculation in the set.
ASCE 7-22 §2.3.1Why this matters: Incorrect wind speed cascades to all C&C and MWFRS pressures. Will be caught in plan review.
Recommendation: Verify intended design wind speed. If Vult = 123 mph, Vasd should be 95.3 mph. Correct all pressure tables accordingly.
AISC 360-16 is referenced for structural steel design. The current edition is AISC 360-22, adopted by FBC 2023 and IBC 2021.
AISC 360-22 | FBC 2023Why this matters: Outdated code reference may trigger plan review comment.
Recommendation: Update all AISC references to the 360-22 edition.
"GABBLE ROOF" should read "GABLE ROOF" in the Components and Cladding pressure table header.
TypographicalRecommendation: Correct typo in next drawing revision.
Export to Excel. Track findings. Defensible QA/QC documentation.
PDF drawings with automatic text extraction. Set your project location for code-aware review.
24+ codes and standards, cross-sheet verification, and math checks run automatically.
Severity-ranked findings with code references and rationale. Export to Excel in one click.
Watch a 60-second walkthrough: upload, review, export.
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60-second walkthrough
One tool for every discipline in your plan set.
PlanFlag checks your drawings against the codes that matter — structural, civil, and MEP standards with 50-state jurisdiction coverage.
PlanFlag assists your QA/QC process — it doesn't replace it. Every finding requires professional review.
Findings cite specific code sections (IBC, ASCE, ACI, AISC) so you can verify and defend every comment.
Export findings to Excel with severity, code references, and tracking columns. Ready to hand off or include in your review package.
Engineering drawings contain proprietary designs, client data, and project details that cannot be exposed. PlanFlag is built from the ground up for confidentiality.
Your data never leaves US soil. Processing runs on isolated US data centers with no offshore routing, no third-party subprocessors, and no cross-border transfers.
Drawings are processed in memory and discarded after review. We do not store, cache, or retain your PDFs. When the review is done, the file is gone.
PlanFlag runs on our own trained model — not OpenAI, not Google, not a shared API. Your plans are never sent to a third-party provider and never used to train any model.
Each review runs in an isolated compute environment that spins up for your job and terminates after. No shared GPU memory, no co-tenancy, no data leakage between users.
Unlimited plan sets. No per-sheet pricing. No surprises.
One prevented RFI pays for a year of PlanFlag.
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