Can a construction estimate be prepared directly from an IFC model?

Yes. An IFC model can provide quantities and object context, but a dependable construction estimate reconciles it against the issued drawings and schedules. Issued drawings govern material conflicts, and the estimate discloses assumptions, gaps and the source or method behind each BOQ line.

How EstiFlow uses IFC models alongside issued drawings, with accepted formats, conflict handling and source-level line provenance.

Last reviewed 20 August 2026

What can an IFC model contribute?

An IFC model can provide object identity, geometry, levels, spaces and quantities that help establish a measurable starting point. It is still one source in the document set, not an instruction to ignore the issued drawings.

Which source governs a conflict?

Issued drawings govern material conflicts. The estimate records the conflict, uses the governing source and discloses the resulting assumption or unresolved item so the builder can decide what to confirm.

What should I send with the model?

Send the IFC, the issued PDF drawing set and any relevant schedules, engineering, finishes, services, geotechnical and compliance documents. DWG, SketchUp and LandXML are also accepted as supplied.

Next step

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Send the documents you have. We will confirm the document set, surface assumptions and issue the estimate pack.

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