How it works

Built for the way construction documents behave

Construction docs aren't blog posts. We built the retrieval, the reasoning, and the routing to match.

  • Page-exact citations

    Every answer points to the exact document and page. The only kind a site team can act on.

  • Always the current revision

    A drawing is superseded, not replaced. The old sheet is still in somebody's inbox. Every answer names the revision it came from, and flags a newer one the day it lands.

  • Multilingual

    Lemmatization and embeddings tuned for mixed-language corpora. Works the same across the languages your project documents are written in, and answers come back in whichever language you ask.

  • Roles, scopes, audit

    Org and project scoping, four-level RBAC, and a full audit trail of every query and change.

What it's worth

What this is worth on a live project

Real examples of Stoa already in use on live construction sites, and what changed once it was.

01

5+ hours

saved per user every week

Find anything across every site

Ask in plain language and get a cited answer in seconds, pulled from drawings, RFIs, contracts and field notes across all your sites.

02

3 weeks to 2 days

to find and prove a claim

Claims found and proven

Stoa checks the work against the owner's requirements to find the claims worth making, then pulls the evidence from correspondence, site diaries and drawing revisions.

03

70% less

time spent on first drafts

Draft RFIs and reports in minutes

Generate first-draft RFIs, memos and meeting minutes grounded in your own project documents. Ready to review instead of written from scratch.

04

2 weeks earlier

flagging of clashes and delays

Catch delays and clashes early

Stoa Automations flag conflicting instructions, open RFIs and schedule risks automatically, surfacing problems before they reach the site.

Figures from live design-partner projects (7/2026).

In practice

Who's using it

Six roles on one project. What each of them asks for, and what comes back.

  • Site manager

    Which revision of the 3rd-floor slab drawing is current, and what changed?

    The current sheet, the one it superseded, and the difference between them, each cited to the page.

  • Design coordinator

    Does the new HVAC layout clash with anything in the structural set?

    Conflicts surfaced across disciplines, with both source documents attached to the finding.

  • Project engineer

    Draft the RFI for the missing penetration detail.

    A drafted RFI with the relevant contract clauses and drawings already pulled in.

  • Project manager

    What changed on the project last week that I should know about?

    Quiet revisions, new decisions, and open items, each routed to whoever owns that scope.

  • Site engineer

    What fire rating is required for the corridor partitions on level 2?

    The requirement, the specification it comes from, and the drawing that shows the build-up.

  • Quantity surveyor

    Which variations were approved since the last valuation?

    A dated list with the approval record behind each one, ready to take into the valuation.

Why it matters

The work changes shape.

Same project. Same documents. Less digging. More deciding.

  • Hours lost across M-Files, OneDrive, Drive, Teams, and email.

    Find any answer in seconds, with the page cited.

  • Revision conflicts surface only when they're already expensive.

    Issues caught before they hit the site.

  • Status compiled by hand. Tasks lost in email.

    Tasks and reports come from the project itself.

Data & safety

Data and Safety

Project documents are the most sensitive material on a construction site. Here is exactly how they are handled.

Data privacy

EU data residency

  • All customer data is stored and processed within the EU.
  • Your input and output data is never used to train the language models.

You control access and retention

  • Stoa respects the permissions in your existing systems. Restricted documents stay restricted.
  • You decide when to stop sharing. All project data is deleted within 30 days per your request.

AI safety

Grounded in real knowledge

  • Every answer from your own project documents, never outside sources.
  • Construction specific knowledge built into the background of the language models.

Always a source

  • Answers link to the exact document and page they came from, keeping the user in the loop.
  • Used sources can be checked and backtracked within seconds.

Two business days to implementation

No migration and no cleanup project. Connect a source and the graph builds itself.

Your data stays yours

Stored and processed in the EU, never used to train the models, and deleted within 30 days on request.

Ready to start?

Two business days from first call to a working project.

Ask about pricing and we'll walk you through the product.

Book a demo