AI Construction Drawing Review
Building code compliance review,
done in seconds.
Callout catches code violations, coordination issues, and design deficiencies across all disciplines, before permit submittal.
|
Built by a licensed PE
From
$0.13
Per sheet reviewed
50 Free
Credits to start, no card required
43+
Codes and standards plus local jurisdiction support
7
AEC disciplines in a single pass
How it works
Built for the engineering
review workflow.
1
Add your drawings, select your codes.
Drop any PDF drawing set. Pick from 43+ codes across 7 AEC disciplines. Select a jurisdiction amendment if your locality has one. Choose your review depth and click Run AI Review.
2
Review findings. Accept, reject, or edit.
Each finding has a severity rating, exact code citation, confidence level, and suggested resolution. Accept what is right, reject what is not, edit the resolution when the AI missed the nuance. Callout learns from your decisions over time, calibrating to match your judgment. Export to CSV, Excel, or PDF.
3
Optional: add your firm standards and local codes.
When you are ready, upload jurisdiction amendment PDFs and add firm-specific requirements in plain English. Personal standards stay with your account; organization standards sync across all team members. Callout checks both alongside model codes on every review.
See it in action: a 4-sheet mechanical review in real time
Why engineers choose Callout
Code compliance review
built for engineers.
Exact code citations
Every comment references the specific section, subsection, and edition. No vague references, no hallucinated sections.
Calibrates to your style
Callout improves with use. The more you review, the more accurately it matches your engineering judgment.
Firm Standards & Local Codes
Add firm-specific requirements and upload local jurisdiction amendment PDFs. Callout checks both alongside your selected model codes on every review.
Full review history
Every past review stored and searchable by project, sheet, discipline, or severity. Export to Excel for QA/QC tracking or client deliverables.
All disciplines, one pass
Mechanical, Structural, Architectural, Electrical, Plumbing, Energy, and Fire & Life Safety. Review multi-trade sets against all applicable codes simultaneously.
Pay per use
No seat licenses, no monthly minimums. Pay only for what you review. A fraction of what manual review costs. Scale up or down as your workload changes.
How findings are classified
Severity
Critical
Safety hazard or permit blocker
Major
Code violation requiring revision
Minor
Won't block permit, should correct
Advisory
Best practice recommendation
Confidence
High
Clear violation, specific code reference
Medium
Likely issue, verify project context
Low
Potential concern, treat as suggestion
Accuracy improves with use. Accept, reject, or edit findings and Callout calibrates to match your engineering judgment over time.
Disciplines
Multi-discipline drawing review
in a single pass.
Callout reviews across all major AEC disciplines so you can run multi-trade sets in a single pass.
Fire & Life Safety
NFPA 13 2022 · NFPA 72 2022 · NFPA 101 · IFC 2021
NFPA 13 violations that hold up permitsMechanical / HVAC
IMC 2024/2021 · UMC · ASHRAE 90.1 · 62.1 · 55 · NFPA 90A/B
Mechanical plan review checklistJurisdiction Amendments
Only on CalloutUpload local/state amendment PDFs. AI cross-references against base model codes.
As seen on
From the blog
Code compliance insights
from a licensed PE.
Beyond model codes
Your firm's standards
and local codes, checked automatically.
Every firm has standards that go beyond what model codes require: minimum equipment access clearances, duct leakage testing protocols, preferred control sequences, commissioning requirements. And every jurisdiction has local amendments that modify the base codes. Callout lets you codify both and enforce them on every review.
Add up to 20 firm-specific standards in plain English
Upload local jurisdiction amendment PDFs (city, county, or state)
Select which jurisdiction applies at review time
AI checks your standards and amendments alongside selected codes
Example Firm Standards
Equipment access clearance
Minimum 36" clearance on service side of all HVAC equipment, 24" on non-service sides.
Duct leakage testing
All supply and return ductwork must be tested to SMACNA Leakage Class 6 or tighter.
Thermostat placement
Thermostats to be located 48" AFF, away from exterior walls, windows, and supply diffusers.
These standards are checked on every review alongside your selected codes.
Pricing
Drawing review pricing.
Pay per sheet.
Credits never expire. No seat licenses. Every pack includes the full feature set. Scale up on busy seasons, pay nothing when you don't.
Manual review
$75 – $250
per sheet at $150–$250/hr
Callout first pass
$0.13 – $0.32
per sheet, results in seconds
Callout handles the first pass so your team can focus on the findings that need engineering judgment, not the ones the AI already caught.
✓All 43+ codes and standards
✓Quick, Standard and Thorough review
✓Multi-file upload
✓Firm Standards Library
✓Jurisdiction Amendments
✓AI calibration training
✓Full review history
✓CSV and Excel export
Most Popular
Professional Pack
$49
700 credits
Up to 350 sheets per pack · Save 12% vs Starter
Buy 700 CreditsNot ready to buy? Start with 50 free credits. No card required.
Satisfaction guarantee. Not happy? Email us for a refund.
Compare to alternatives FAQ
AI drawing review FAQ.
Does this replace an engineering review?
No. Callout is an AI-assisted first-pass tool. All findings must be verified by a licensed PE before use in construction documents. It catches the obvious issues so your PE can focus on the ones that need engineering judgment. What to look for in an AI plan review tool
What file types are supported?
PDF only. Multi-sheet drawing sets, single sheets, and multi-file uploads all work. Maximum 20 MB and 50 sheets per review session.
Do credits expire?
Never. Buy credits when you have a busy project load and use them whenever you need them. No time limits, no monthly minimums.
What jurisdictions does Callout cover?
Callout checks against 43+ model codes and national standards including IMC 2024/2021, IBC 2024/2021, IPC 2024/2021, IECC 2024/2021, ASHRAE standards, NFPA 13 2022, NFPA 72 2022, NFPA 101, ASCE 7, ACI 318, AISC 360, the NEC, and more. You can also upload local jurisdiction amendment PDFs (city, county, or state) and select which one applies at review time. The AI flags where local amendments override or modify the base model code.
What is the Firm Standards Library?
It lets you add your own firm-specific requirements in plain English. Callout checks these automatically on every review alongside the selected codes. You can also upload jurisdiction amendment PDFs for local code checking.
Is my drawing data secure?
Your drawings are temporarily uploaded for processing and deleted immediately after review. Anthropic's API has a zero-retention policy and does not use your data for model training. Read about our security practices
Get started today
Your next drawing set
reviewed for code compliance,
before it leaves your desk.
Create a free account and get 50 credits instantly. No card required. Upload a drawing, run a review, see what Callout finds.
AI-assisted review only. All findings must be verified by a licensed PE before use in construction documents.