AI built for construction.

Vest gathers your project files into a single source of truth for everyone on the job. It finds issues automatically, and anyone in the trailer or the field can ask about anything across the project.

The Vest app with the project sidebar, a conversation counting supply diffusers on sheet M2.1.A, and the sheet open beside it with 33 numbered dots from the Count tool
Sample project, for illustration.

Vest reads drawings as drawings.

General chatbots read text well and drawings poorly. Vest reads the schedules, callouts, symbols and notes on every sheet before anyone asks.

  • Find every place a tag or note is printed, then step through each one.
  • Follow a callout straight to the detail it points to.
  • Box one symbol and Vest finds the rest on the sheet. You check the dots and save the count.
  • Draw a box around part of a sheet and ask what it is.
The Vest viewer showing the door and interior opening schedule on sheet A9.3.1 with the eight fire rated rows highlighted

Every new file is checked against the project.

When a file lands, Vest checks every claim in it against the rest of the project, without anyone asking. It looks for things like an RFI answer that sends the field to a sheet an earlier RFI already changed, or a submittal approved against the wrong spec section.

  • Each issue gets a numbered outline on the page.
  • Each issue says what the file says and what the project says, with a link to the other page.
  • Anyone on the project can dismiss an issue with a note or ask for a re-check.
  • Vest doesn't change your documents. Your team decides what to do.
All claims checked (12)RFI 027, sample
  1. Door N140 needs a 60 minute ratingconflict
  2. Door N140 takes hardware set 205stale
  3. Door N140 is on the Level 1 corridorconsistent
  4. Sheet A9.3.1 holds the door scheduleconsistent
  5. Door N140 is a wood door in a hollow metal frameconsistent

Ask anything about the project and open the page.

Ask in plain words, from the office or the field. Vest answers from the files gathered for that project, from drawings, specs and RFIs to submittals, purchase orders and invoices.

  • Every answer opens the exact page it came from, with the spot highlighted.
  • When the documents don't support an answer, Vest says so.
  • It works on a phone. Tap a source and the page opens, zoomed to the spot.
The Vest app answering which doors are fire rated, with a table of doors and hardware sets and a source link for each statement

About a third of field rework starts in the drawings and specs.

Jobs lose money to rework, change orders, delay and disputes. Much of it starts with an error, a conflict or an old sheet that nobody caught in time.

  • 48%of rework is blamed on poor communication and poor project data, in a survey of 599 construction leaders.FMI and PlanGrid, 2018
  • 14 hrsa week each construction professional loses to looking for information, resolving conflicts and fixing mistakes.FMI and PlanGrid, 2018
  • 15%is the high end of what change orders typically add to large US building projects. The average is 4.6%, from all causes.AIA Contract Documents, 2023
  • #1cause of North American construction disputes in 2024: errors and omissions in the contract documents.Arcadis, 2025

These are industry findings from published studies, not measurements from a Vest project. The share of rework comes from 32 building projects, where design errors and omissions were 1.5 of 4.6 points of direct field rework (Hwang et al., 2009, in Navigant, 2012).

How Vest works

Your files are spread across drives, inboxes, the trailer and several apps. We pull them together for you, so you don't need a tech person on staff.

  1. We gather your files

    We find every place your files live and put them in order, or we sync the folders you choose. Your originals stay where they are.

  2. Vest reads every page

    Callouts link to the details they point to, and a newer revision of a file takes over from the older one.

  3. New files get checked

    Each new file is checked against the project, and any issues are marked on the page.

  4. Your team asks

    Anyone on the project can ask a question from the office or the field and open the page behind the answer.

Your documents stay private to your company.

Your documents include bid numbers, contracts, and means and methods, some of the most sensitive things your company has. Vest keeps each company's data in its own database, shows people only the projects they are added to, and never uses your documents to train a model.

Your own databaseYour company's data lives in its own separate database. The database itself checks who is asking before it returns anything, so a query against your database cannot read another company's rows.
Never trains anyone's modelsYour documents are never used to train AI models. Not by us, and not by the AI providers we use, under their published terms.
Sees only what you canAccess is enforced by the server, per project. If you are not on a project, Vest cannot search it or use it as a source for you.
Access you controlPeople see only the projects they're added to, and removing someone takes effect immediately.

Who sees what: access is per project today, and finer controls for sensitive folders like contracts and financials arrive with pilot partners. The full picture, including every vendor that touches your data, is on our security page.

Questions

Which files does Vest check on its own?

Every new file on a project with review turned on. Vest checks each one against the rest of the project without anyone asking. You can also ask questions about all of your project files, including drawings, specs, RFIs, submittals, change orders, purchase orders and invoices.

Will Vest catch every issue?

No. Vest can miss an issue, and it can flag something that turns out to be fine. Each issue shows what the file says and what the project says, with a link to the other page, so a person can check it and decide what to do.

Does Vest change our documents or contact the architect?

No. Vest doesn't change any document, doesn't send anything to the architect, and doesn't assign issues to people. Your team decides what happens next.

Will it make things up?

Any AI can, which is why every answer opens the exact page it came from, highlighted, so you can check it. When the documents cannot support an answer, Vest says so.

Why not use a general chatbot?

A general chatbot reads text well and drawings poorly, and most of what a project needs to know is on the sheets. It also starts from zero on every question. Vest processes every page before anyone asks and cites the page each answer came from.

We already use Procore or Autodesk Construction Cloud. Why add Vest?

Keep them. Vest works alongside them. It reads all of your project files together, including the ones kept outside those tools, and opens the page each answer came from.

Is our data used to train AI models?

No. Your documents are never used to train any model.

How long does setup take?

It depends on how many files you have. We run the document processing for you, so your team just signs in and starts asking questions.

What does the field need to learn?

Very little. You type a question the way you would type a text, and tap a source number to see the page it came from.

Does it work on a phone?

Yes. Vest runs in your phone's browser, and tapping a source opens the page right there, zoomed to the spot.

Can we use this on U.S. government, federal or military projects?

Not yet. Documents from government and military projects carry legal requirements we have not built the protections for, so they stay out of Vest for now. We scope that work with pilot partners who need it. If that's your work, tell us when you schedule a demo and we'll tell you what it would take.

We're on the design side, not a GC. Is Vest for us?

Vest is built for contractors first, but it answers the same way for anyone working from a set of drawings and specs. If that's you, write to hello@vest.build.

Founders

Daniel Kim

Daniel Kim

Co-Founder and CTO

Daniel spent six years as a software engineer at Apple. In 2022 he founded Base16, where he has spent more than four years building computer vision, machine learning and AI products. He did his graduate research at UCLA on real-time biomedical imaging and holds certifications in deep learning and agentic AI.

LinkedIn
Tavana Alailima

Tavana Alailima

Co-Founder and CEO

Tavana grew up doing construction side projects and joined the laborers' union. He went on to earn a Computer Engineering degree and spent more than five years as a software engineer at Apple, where Daniel was his mentor. In 2022 he left to found his first AI startup, and has since built and led software & AI for startups and large enterprises.

LinkedIn

Read more on the team page.

See Vest on your own project.

We work with a small number of general contractors at a time. We gather and organize your files, set up your projects, and work directly with your team from day one.