Construction crane and building wireframe
Construction Intelligence

The AI Operating System for Construction

One platform that connects drawings, RFIs, emails, ITPs, site photos and teams—powered by a Construction Knowledge Graph and AI agents.

BIMstack knowledge graph connecting emails, WhatsApp, PDFs, drawings, and site photos to AI clash detection for a pipe through beam on level 12
Building now
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Everything's documented.
Nothing's connected.

BIMstack builds the graph that links every RFI, drawing, email, and site record — so your AI agent can read the whole story.

The drawing was right.

The email was clear.

The pipe is still through the beam.

No single person or tool had the full picture. That's how a $36k-a-day delay hides in plain sight.

Before

Emails
WhatsApp
PDFs
Drawings
Excel Sheets
Site Photos
ITPs & Reports
BIMstack
AI + Graph

After

One Source of Truth
Full Context
AI Insights
Audit Trail
Faster Decisions
Better Outcomes

The coordination gap

One decision, five tools.
Zero consensus.

A duct needs to shift 150mm north. The architect says so clearly. Watch what that instruction becomes by the time it reaches the person holding the tool on Level 3. None of them were wrong when they acted.

Email · Tue 09:14

From: Architect

To: MEP Lead, Structural

CC: PM

“Shift the 300mm riser duct 150mm north per structural clearance. See attached rev C.”

📎 RISER_L3_RevC.pdf
WhatsApp · Site Group
got it — which drawing tho?
the one from tuesday
this one?
📷 Photo · Level 3
ya looks right, just do it

✓✓ Delivered

PDF Markup · Rev C · Thu
see WA chat →Rev C

Uploaded two days after the WhatsApp thread already moved on. Nobody re-opened it.

Site Photo · Level 3 · Mon
Level 3 · Installed per Rev B

Installed against Rev B — the revision before the change. The photo proves it happened.

The result · 3 weeks later
RFI047HOLDDUCT ✕ BEAM · LEVEL 3
■ Stop work — RFI #047 · 14d open

Tape measure. Three weeks after the email. One stalled pour.

Same instruction. Five formats. Zero shared record. The problem isn't the people — none were wrong when they acted. Information that travels through formats loses its version, its context, and its chain of accountability at every hop.

The cost of poor coordination

Construction loses the same 28%every year. Every year.

Not from bad people or bad plans. From information that travels through the wrong formats and loses its context at every hop. Peer-reviewed research, 2024–2026.

98%
of contractors report quality failures

Errors, omissions, and rework on projects in the past 3 years — not outliers, the norm.

Dodge Construction Network [1]

9%
average budget overrun

The direct cost of on-site coordination failures, before accounting for delays and claims.

Dodge Construction Network [1]

28%
of project time lost to rework

Nearly a third of every working day undone by errors that better coordination would prevent.

Procore [2]

10%
of annual profit eroded

Coordination failures don't just inflate budgets — they drain contractor margins every year.

Dodge Construction Network [1]

18%

of project time is lost just searching for data — before a single decision is made. Add the 28% lost to rework and nearly half the working day is undone by information failure.

Procore · Future State of Construction (2024) [2] · BCA Singapore requires 30% productivity gain from digital tools [4]

The answer

Every document, permanently connected.
An AI agent that never stops reading.

BIMstack links every RFI, NCR, ITP, and site record into a live construction graph — then runs an AI agent on top of it that spots risks, drafts responses, and surfaces the truth before it becomes a claim.

Knowledge Graph

Every document linked at creation — drawing revision, location, team, and status.

AI Agent

Reads the graph continuously. Spots RFI-042 blocking the pour on day 3, not day 14.

Full Traceability

Every action timestamped and archived. Disputes answered in seconds, not weeks.

How it works

One platform. Four layers.
All compounding.

The graph feeds the AI. The AI acts on the graph. Every action is permanently traced. Each layer makes the others smarter.

Knowledge Graph

Links itself as you work

Every RFI, NCR, ITP, drawing, and site record connects at creation — to the revision, the location, and the team. No setup. No manual threading. The graph builds from the work itself.

AI Agent

Reads. Decides. Acts.

Scans the live graph continuously. Spots RFI-042 as a pour blocker on day 3, not day 14. Drafts the response, generates the ITP, notifies the right people — without being asked.

Unified Project Hub

One place. Zero hunting.

RFIs, NCRs, ITPs, submittals, site diary, lookahead — all cross-referenced in one place. The latest drawing revision is one search away — not buried in email or a shared drive.

Full Traceability

Handover built passively

Every decision is timestamped, linked to the drawing revision, archived permanently. When a dispute arrives six months later, the answer is a search — not a week of reconstruction.

Knowledge Graph

The graph that builds itself from your work.

Every time you raise an NCR, it's already connected to the drawing it was pinned on, the ITP covering that zone, and the RFI that answered the original design question. No setup. No manual threading.

Auto-linked at creation

Pin a defect on the drawing. The NCR is already connected to the drawing revision, the ITP covering that zone, and the team responsible. Zero manual cross-referencing.

Spatial context embedded

Every document carries coordinates — grid reference, floor level, drawing revision. Context that lived in someone's head is now part of the graph.

Full project memory

Months later, when someone asks why a design changed or what caused rework, the answer is a search — not a meeting to reconstruct the story.

CLASHPipe · Beam · Level 3RFI8RFIsNCR4NCRsITP12ITPsLKA3LookaheadLOG7Site DiarySAF2SafetyCHK6ChecklistsINS5Instructions⚠ RISK DETECTEDRFI-042 · 14d unansweredBlocks Level 3 pour · $36k/day⚡ AI drafting response now...LIVE
AI Agency

AI that doesn't
just answer —
it acts.

By day 15 the pour is delayed and a variation claim is drafted. The information existed. Nobody acted.

BIMstack AI reads the graph continuously — flags RFI-042 on day 3, drafts the response, generates the ITP, flags tonight's permit expiry.

Why this is different

Traditional tools store documents. BIMstack understands relationships. The AI reads a graph where every connection carries meaning.

LIVE · MONITORING

BIMstack AI Agent · Tower A

Active

Scanning project graph

Scope47 RFIs · 23 NCRs · 18 ITPs · 6 permits
ActiveTower A · Levels 3–12
StatusAll systems nominal

Continuous — no setup required

Draft RFI responses

Cites the correct drawing revision and spec clause automatically.

Generate ITP templates

Scoped to the work zone, with hold and witness points pre-populated.

Surface risks early

Flags overdue RFIs, expiring permits, and pending CARs before they cost.

Answer any query

Ask in plain English. The AI reads the graph and responds in seconds.

Traceability

Every decision,
every sign-off.
Nothing lost.

Every pin has coordinates. Every NCR has a timestamp, a photo, and a drawing link. When a dispute comes six months later, the answer is a search — not a reconstruction.

Every action timestamped

Who did what, on which drawing revision, at exactly what time. Not approximated. Not reconstructed from memory.

Evidence immutably archived

Photos, sign-offs, and witness records are part of the graph — not floating in someone's camera roll.

Handover complete by default

When the project closes, the entire evidence trail is already assembled. No scramble. No disputed defects.

Evidence Trail · NCR-003

Rebar spacing · Level 3 · Grid B1

100% traced
NCR

NCR-003 Raised

M. Torres · 14 Mar · 10:34am

S-204 Rev C2 · Grid B1 · Level 3

Rebar spacing non-conformant — ITP-12 linked automatically

ITP

ITP-12 Witness Complete

P. Nguyen · 14 Mar · 11:45am

Hold point H3 cleared · photo attached

Signed off on-site · linked to NCR-003

CAR

CAR Submitted

J. Reyes · 14 Mar · 3:20pm

Corrective action: rebar spacing rectified

2 photos · contractor sign-off attached

CLOSED

NCR-003 Closed

QA Manager · 15 Mar · 9:10am

Full trail: 4 events · 3 docs · 2 photos

Audit-ready · archived with handover package

Handover-ready · Dispute-proof · Searchable forever

Project Outcomes

What connected projects
look like.

Blockers surface earlier. Evidence is automatic. Handover is already done.

Earlier blocker detection

AI surfaces blockers days before trades idle.

Faster NCR resolution

Auto-linked sign-offs and photos close NCRs in hours, not weeks.

The pour that didn't stop.

RFI-042 flagged on day 3. Response drafted, team notified — before the delay hit.

Pour delay cost avoided

Handover built passively

Already in the graph. Handover is a search, not a scramble.

Less time searching for data

Drawings and RFI threads findable in seconds, not buried in email.

Dispute resolved in 60 seconds.

NCR-003 auto-linked its ITP, CAR, and photos. When the dispute came, the full trail was one search.

Dispute answered without reconstruction

Scenarios illustrate real coordination failure patterns. Industry: 28% of time lost to rework, 18% searching for data (Procore, 2024).

Early Access

Be first in.
Shape what gets built.

BIMstack is in active development. Join the waitlist and we'll onboard you to a live project before public launch.

No migration required — start on one active project
No setup fees during early access
Your knowledge graph starts building from day one
Direct line to the product team during onboarding

Waitlist open

Join the waitlist

We're onboarding a small group of construction teams before public launch. Tell us about your project and we'll be in touch.

No commitment. We'll reach out within 48 hours.