How can a contractor or estimator use AI to speed up quantity takeoffs from drawings and specifications without trusting counts it cannot check?

---
title: "How to do quantity takeoffs with AI"
description: "Start from a set of past projects where you know the correct quantities, your cost codes and the takeoff format your estimators already use. AI reads the drawings and specifications, counts and measures items such as doors, fixtures, walls, flooring and openings, links each quantity to the sheet and area it came from, and flags unclear scales, missing sheets, revisions and conflicts between drawings and specifications. Test it against the past projects first and measure where it is off, an estimator checks every quantity, especially the high-cost items, before it goes into a bid, and pricing and the final bid stay with your estimating team."
url: https://lidvizion.ai/answers/how-to-do-quantity-takeoffs-with-ai/
site: Lid Vizion
index: https://lidvizion.ai/llms.txt
---

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# How can a contractor or estimator use AI to speed up quantity takeoffs from drawings and specifications without trusting counts it cannot check?

Start from a set of past projects where you know the correct quantities, your cost codes and the takeoff format your estimators already use. AI reads the drawings and specifications, counts and measures items such as doors, fixtures, walls, flooring and openings, links each quantity to the sheet and area it came from, and flags unclear scales, missing sheets, revisions and conflicts between drawings and specifications. Test it against the past projects first and measure where it is off, an estimator checks every quantity, especially the high-cost items, before it goes into a bid, and pricing and the final bid stay with your estimating team.

## What this means in practice

- Start from past projects with known quantities, cost codes and your format.
- Count and measure items and link each quantity to its sheet and area.
- Flag unclear scales, missing sheets, revisions and conflicts.
- Test against past projects before using it on live bids.
- Have an estimator check every quantity and keep pricing with your team.

## How Lid Vizion approaches it

We start with the business decision and operating context, define ownership and measurable milestones, then use configuration, integrations, automation, or custom software only where each earns its place.

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