3 min read
BIM

How BIM and Construction Estimating Work Together Before Bid Day

Before a contractor submits a bid, one question matters more than almost anything else: do we understand what this project is going to cost? Model-based quantity extraction is part of the answer.
Aaron Edwards
Senior Estimator, EstimatesPro
Date
Category
BIM
Estimating
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Before a contractor submits a bid, one question matters more than almost anything else:

Do we understand what this project is going to cost?

Accurate quantities are an important part of answering that question.

Traditional estimating relies heavily on drawings, specifications, and digital takeoff processes. When a reliable BIM model is available, it can provide another source of measurable construction information.

  1. What Is Model-Based Quantity Extraction?

BIM models contain information about building components.

Depending on the quality and structure of the model, estimators may be able to extract quantities for certain elements directly from the model.

This can include components such as:

  • Walls

  • Doors

  • Windows

  • Floors

  • Structural elements

  • Mechanical components

  • Other modeled building systems

Why Quantity Accuracy Matters

A missed quantity can affect the bid.

An incorrect quantity can affect purchasing.

A poor understanding of scope can affect project profitability.

That's why contractors need more than a number at the bottom of an estimate.

They need traceable quantities connected to the project scope.

BIM Doesn't Replace Estimators

BIM can make measurement more efficient, but professional estimating still requires judgment.

An estimator needs to understand:

  • Specifications

  • Scope gaps

  • Construction methods

  • Drawing details

  • Material requirements

  • Labor requirements

  • Project conditions

EstimatesPro's approach combines digital workflows with experienced estimating judgment rather than relying on software alone.

Supporting U.S. Contractors

For general contractors and subcontractors across the United States, combining BIM information with construction estimating can create a more connected preconstruction workflow.

Instead of treating modeling and estimating as completely separate activities, teams can use model information to support quantity review and planning.

From Model to Takeoff

A typical workflow can look like:

Drawings → BIM Model → Coordination → Quantity Extraction → Estimate → Bid

This can give contractors a clearer picture of the project before committing to a price.

Prepare Your Next Bid With Better Information

For contractors competing for commercial construction work, preconstruction decisions can have a major impact on project performance.

BIM modeling and professional estimating can help provide the information needed to evaluate scope before bid submission.

EstimatesPro provides BIM modeling, quantity extraction, and construction estimating support for contractors across the United States.

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