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AI for BIM & IFC models

Automated Quantity Takeoff from IFC Models

The Nomic agent runs quantity takeoffs straight from the model data. No export to a spreadsheet, no separate QTO tool, no manual counting. Assign it a takeoff task and get counts, areas, volumes, and lengths immediately from the IFC quantities.

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Nomic agent interface showing BIM model tasks: quantity takeoffs, coordination checks, and property validation running over an IFC building model
Takeoffs from the source, not a copy
01 / Model-based quantities

Takeoffs from the source, not a copy

Traditional QTO workflows export schedules or count elements manually from drawings. Nomic takes quantities directly from the IFC model's property sets, the same data the authoring tool computed, so totals are consistent with the model, not a downstream approximation.

  • Pull quantities from IfcQuantitySets (area, volume, length, weight)
  • Group by category, building storey, predefined type, or material
  • Works with quantities in metric or imperial: the model's own units
Get the breakdown you need
02 / Flexible tasks

Get the breakdown you need

Instead of building pivot tables from a schedule export, give the Nomic agent the takeoff task directly. Get a concrete volume breakdown by level, a full element count sorted by category, or the total glazing area on a specific facade, each answer generated in seconds from a precise query over the model.

  • "Give me a takeoff of concrete volume by level"
  • "Count every element grouped by category, sorted high to low"
  • "Total glazing area on the south facade"
Feed estimates faster, with defensible numbers
03 / Estimating outputs

Feed estimates faster, with defensible numbers

Quantity data from the IFC model flows directly into estimating. Export results to Excel for your cost model, or ask follow-up questions to refine the breakdown: by material, type, or scope boundary. Every number traces back to the model.

  • Export QTO tables to Excel or CSV for cost modeling
  • Filter quantities by scope boundary or phasing
  • Cross-reference model quantities against spec requirements in the same project space
Outcomes

What teams get from this workflow

Takeoffs in minutes, not days

A quantity takeoff that used to take a day of schedule exports and spreadsheet work now takes minutes against the model directly.

Consistent with the model

Quantities come from the IFC quantity sets, the same data the BIM tool computed, not a manual count that drifts as the model changes.

No separate QTO software

Run takeoffs in the same Nomic space where the team reviews specs, drawings, and project documents.

FAQ
Questions about this AI for BIM & IFC models workflow

Answers to common questions about this workflow.

What quantities can the agent extract from an IFC file?

The agent can extract any quantity stored in IfcElementQuantity property sets: net and gross area, volume, length, width, height, weight, and count. What is available depends on what the authoring software exported into the IFC.

Can I get quantities broken down by building level or zone?

Yes. The agent can group any quantity by building storey, space, category, type, or material. For example: concrete volume per level, wall area by fire rating, or window count by facade orientation.

What if some elements are missing quantities?

The agent will report what is available and can flag elements where a quantity is missing. You can ask "Which walls are missing a net area quantity?" to identify gaps in the model data.

Is this a replacement for dedicated estimating software?

Nomic is best for model-based quantity extraction and early estimating during design. For detailed cost estimation and production pricing, you would still use your estimating software. Nomic gives you the quantities to feed into it.

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“Nomic allowed our check to be more technical and focused on the engineering.”
Jacob EmmonsWater, Arcadis United States
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IFC Quantity Takeoff: Automated BIM QTO & Bill of Quantities | Nomic