AI-automated drawing QA for MEP firms

Find and flag errors — before your drawings make it to the field.

Your senior engineers spend hours every week red-lining PDFs for missing keynotes, schedule mismatches, and coordination gaps. If a senior engineer spends just 10% of their time on drawing QA, that's the equivalent of $40–50K a year in billable capacity. RedMark scans your full drawing set and flags the errors before a senior engineer ever opens the file.

Your AI checks the documentation. Your engineers check the engineering.

M-201 · LEVEL 2 MECHANICAL PLAN · SCALE 1/8"=1'-0" VAV-1 VAV-2 VAV-3 1 2 3 4 5 MISSING KEYNOTE VAV-1 · schedule ref SCHEDULE MISMATCH VAV-2 · plan vs. M-401 COORDINATION GAP Mech ↔ Elec ceiling 3 issues found · 1 critical · 2 high M-201 of 47
Built by engineers who worked at

The Redline Tax is killing your margin — and most MEP firms have never quantified it.

And it gets worse — coordination gaps cause downstream rework, RFIs, and the dreaded Million Dollar Typo.

$0
Per senior engineer, per year, spent on manual drawing QA.
0%
Of a senior engineer's week typically spent manually QA-ing drawings.
15–20%
Of senior margin lost to non-billable administrative cleanup.
Based on a 100-engineer firm, $200/hr billable rate, 4 hrs/week of senior QA time.
How it works

From upload to redlined drawings in under an hour.

01

Upload

Drag and drop your full mechanical, electrical, and P&ID drawing sets — plans, schedules, legends, submittals. No CAD plugin, no Revit integration.

02

AI scans every sheet

Custom OCR + computer vision trained on tens of thousands of M&E drawings + a reasoning layer encoded with engineering rules. Cross-checks plans against schedules, electrical against mechanical.

03

Issues redmarked

Errors and coordination gaps highlighted directly on the drawing, ranked by severity and discipline, with a plain-English explanation. Your seniors review what matters in minutes.

QA check library

30+ automated checks across mechanical, electrical, and P&ID.

And we ship new ones every week — driven by what your team needs.

Coordination

Equipment coordination

Verifies equipment on the plan exists on the schedules — and vice versa.

Coordination

Mechanical–electrical coordination

Checks circuit sizes and voltage mismatches between mechanical equipment and electrical panel schedules.

Text & annotation

Missing keynotes

Flags every callout on a plan with no matching entry in the legend.

Model availability

Schedule vs. submittal

Reviews and highlights discrepancies between mechanical equipment schedules and contractor submittals.

P&ID

Instrument tag coverage

Verifies that every instrument tag on the P&ID has a complete entry in the instrument list.

Architectural Coming soon

Door schedule consistency

Checks door numbers, hardware sets, and ratings against the door schedule.

See all 30+ checks
In the field

Tested on live projects — not demo sets.

Shipping cadence
New checks weekly
v1 shipped March 2026. The check library grows every week, driven by what engineers in the field ask for.
Live proof-of-concept · London
37 storeys
Running QA on the mechanical package of a major London commercial tower — fire dampers, smoke control, congested basement coordination.
Engineering-rule checks
Calculated, not guessed
RedMark recalculates values from first principles — heater sizes from airflow and ΔT, MOCP against panel schedules — and flags numbers that don't compute.
Positioning

Bluebeam is the digital pen.
RedMark is the eye that tells the pen where to go.

PDF-native. Sits alongside Revit, AutoCAD, Bluebeam, and Autodesk Construction Cloud. No rip-and-replace. No change to how your engineers already work.

Who it's for

Built for the people doing the work — and the people protecting the margin.

Principal · Owner · VP Engineering

Recover 15–20% of senior margin lost to manual QA. Reduce RFI exposure and Million Dollar Typo risk. Take on bigger projects without hiring more seniors.

Get the ROI breakdown

BIM Manager · CAD Manager

Standardise QA across every project. PDF-native — works alongside Bluebeam, Revit, and ACC with no rip-and-replace. Catch coordination errors before submittal.

See the platform

Senior · Lead Engineer

Stop being the bottleneck for junior work. Get a pre-flagged, ranked issues list instead of hunting for missing keynotes. Spend your time on engineering judgment.

Get a free drawing audit
Security

Your IP stays your IP.

AES-256 encryption at rest. TLS 1.3 in transit. LLMs never see your drawings or train on your data. Enterprise deployments with contractual no-training guarantees.

Read our security model
AES-256 at rest TLS 1.3 in transit No model training SOC 2 Type II — in progress GDPR-ready
The team

Built by engineers who have lived the Redline Tax.

AV

Arvind Viswanath, PE

Founder

25+ years across MEP and manufacturing. 3M. National Laboratories. Hundreds of complex projects shipped.

KS

Shrikrishna Srinivasan

CTO

20 years building production AI. Texas Instruments. AutonomIQ (acquired by Sauce Labs).

SG

Sundeep Goel

Advisor & Investor

30+ years in enterprise SaaS. Procore. NetSuite. Object Design. Lombardi.

Read the full team story
Start here

See it on your own drawings.

Upload 5 sheets from a recent project. We'll return a RedMark Report inside 48 hours showing exactly what your manual QA missed. Free, no obligation.