Estimating · App

AI did my takeoff.

Takeoff AI is a quantity takeoff app I built. Load a drawing set and the spec, and it measures walls, rooms, doors, windows and paint areas. Then it builds the job in 3D and plays the schedule as a 4D timeline you can scrub day by day.

68sheets on a real tender

2:47minutes of AI time

2,639takeoffs, every division

$0free and open source

Download for Mac or Windows Open in your browser View the code Watch the demo

No account, no subscription. Bring your own Claude, ChatGPT or open source model.

4D build

Watch the job get built from the drawings.

From the drawing set, the AI builds a 3D model of the building and the site, then lays the schedule over it. Drag the timeline and the building goes up the way it would on site: earthworks, foundations, frame, envelope, roof and finishes. Excavators, cranes, scaffolding and fencing come and go with the work.

Day 0Planned date

Takeoff

Every paint area, window and door, measured on the sheet.

Each takeoff sits on the drawing where it was measured, grouped by trade and paint type. Click a type and every instance lights up across the set. The quantities update as you go and export to Excel.

Areas, lengths and counts at the drawing scale
Linked panels: pick a type on the left, see where it is on the right
Every division from site works to finishes

Paint takeoff on a restaurant repaint: PT-1, PT-2 and PT-3 by elevation

Try it: the sample ski lodge, live in your browser. Tap a gold tag, callout or schedule row to follow it. Open the full app

Specs

The spec, read into sections and tied to the drawings.

Drop in the spec book and it is split into its divisions, sections and articles. Every drawing a section names is linked, so you can go from the painting section to the elevations it covers and back.

Sections and articles you can jump straight to
Spec to drawing links both ways
References to other sections picked out

Painting and window sections of a repaint spec

Project map

The whole spec as a map you can fly through.

Every spec section becomes a node, grouped by division, with lines to the drawings and schedules it points to. Switch to 3D and the AI clusters the sections by meaning, so concrete, masonry, openings and thermal sit together and you can see what ties to what.

Maintenance shop spec: 78 sections by division, then the 3D meaning map

Try it

Three sample projects, ready to open.

Each one comes with the full drawing set, the spec book, a finished takeoff and the 3D model, so you can see the whole workflow. Open them from inside the app, or download the file and open it with Takeoff AI. Names, logos and addresses are removed.

Sample #1

Ski lodge

Two-storey timber lodge with its site, about thirteen months from mobilization to completion.

Download sample · drawings, spec, takeoff, 3D

Sample #2

Maintenance shop

Municipal vehicle shop with bays, office and mezzanine, taken off across every division.

Download sample · drawings, spec, takeoff, 3D

Sample #3

Restaurant repaint

Exterior repaint and new windows on a restaurant, with scaffolding, over three months.

Download coming soon · drawings, spec, takeoff, 3D

Bring your own AI

The app has no AI of its own and never uses mine. In the desktop app, connect the Claude or ChatGPT app you already pay for. In the web app, paste your own Anthropic or OpenAI API key. Click Connect AI at the top right of any project.

Your files stay yours

The app is just the program. Drawings, project files and API keys stay on your own computer or in your browser. Nothing is stored on a server.

Installing the desktop app

The app isn't code-signed yet, so your computer will ask before opening it the first time.

Mac: right-click the app, choose Open, then Open again.
Windows: click More info, then Run anyway.
Web app: no install, just open takeoff.talkswithtalha.com.

FAQ

Do I need AI to use it?

No. Scale, measuring, counts, the spec reader and the built-in Automate tools work without any AI.

Can I sign in with my Claude or ChatGPT plan?

Yes, in the desktop app. It connects to the Claude Desktop, Claude Code or ChatGPT Codex app on your computer, and that AI can run the whole takeoff. The web app can't reach those apps, so there you use your own Anthropic or OpenAI API key instead.

Which should I use, web or desktop?

The web app is great for opening the samples and measuring. For full AI takeoffs, download the desktop app and connect your own Claude or ChatGPT.

Where does my API key go? Who pays?

It stays in your browser or on your computer and goes straight to the AI provider. They bill you for what you use. Nothing passes through me.

Is it free?

Yes, and open source. The only cost is your own AI, if you use one.

Building something real in construction tech?

Come on the show and talk about it.

talha@talkswithtalha.com LinkedIn