Why BIM Quantity Takeoffs Matter

Traditional quantity takeoffs require estimators to measure information from drawings manually. A properly developed BIM model can provide another source for extracting quantities from modeled building elements.

Our BIM takeoff process focuses on reviewing the available model, identifying relevant elements, validating the quantity information, and organizing the resulting measurements into a usable takeoff.

What Is Included in a BIM Quantity Takeoff

  • BIM model review
  • Model element identification
  • Quantity extraction
  • Material quantity measurement
  • Component counts
  • Area calculations
  • Length measurements
  • Volume calculations
  • Element-by-element quantities
  • Trade-specific quantities
  • Floor-by-floor breakdowns where applicable
  • Building-area breakdowns where applicable
  • Material categorization
  • Quantity reconciliation
  • Assumptions
  • Exclusions
  • Editable Excel deliverable
  • Quantity summary

BIM Takeoff by Construction Trade

BIM quantity takeoffs can support numerous construction scopes, including:

  • Concrete
  • Rebar
  • Structural steel
  • Framing
  • Roofing
  • Drywall
  • Insulation
  • Doors and windows
  • Flooring
  • Ceilings
  • Millwork
  • HVAC
  • Plumbing
  • Electrical
  • Site-related modeled components
  • Other BIM-modeled construction elements

Model Review & Quantity Validation

A BIM model is only as useful for estimating as the information contained within it.

We review modeled elements and relevant model data to determine what can be reliably extracted and what may require additional interpretation or reference to project drawings and specifications.

Working With BIM Models

Depending on the project, available BIM information may include:

  • Revit models
  • Architectural BIM models
  • Structural BIM models
  • MEP models
  • Federated models
  • Model schedules
  • Model-based quantity information
  • Associated construction drawings
  • Specifications

BIM Quantity Takeoff for Contractors

Contractors can use BIM-derived quantities as an input for material purchasing, estimating, subcontractor coordination, bid preparation, and cost analysis.

For pricing, quantities can be combined with applicable material, labor, equipment, and subcontractor costs.

BIM Quantity Takeoff for California Projects

We provide BIM quantity takeoff services throughout California for general contractors, subcontractors, developers, architects, and construction professionals.

Related BIM Services

For Revit-specific estimating, see [Revit Estimating](/services/bim-estimating/revit-estimating/).

For 3D model-based estimating, see [3D BIM Cost Estimating](/services/bim-estimating/3d-bim-cost-estimating/).

For 5D cost integration, see [5D BIM Cost Estimating](/services/bim-estimating/5d-bim-cost-estimating/).

For BIM-based cost evaluation, see [BIM Cost Analysis](/services/bim-estimating/bim-cost-analysis/).

What Is Included in Your Estimate

  • Extracted quantity models
  • Model element validation reports
  • Trade-specific material lists
  • Floor-by-floor area and volume metrics
  • Editable Excel takeoff