Warning · Data quality
How to fix Space missing floor area
in IFC files
Add area quantities to IfcSpace — export BaseQuantities so each space carries NetFloorArea/GrossFloorArea.
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No account · No upload · Runs in your browser · 38 validation checks
What it means
The Space missing floor area check
IfcSpace has no NetFloorArea quantity — required for energy analysis and QS workflows
The fix
How to fix Space missing floor area in your authoring tool
Concrete, tool-specific steps. The check itself is schema-agnostic and works for IFC2x3, IFC4, IFC4x1 and IFC4x3.
| Authoring tool | How to fix |
|---|---|
| Revit | Rooms export as IfcSpace but quantities are missing. Enable “Export base quantities” (Pset/QTO) in the IFC export options and make sure Rooms are properly bounded/placed so areas compute. |
| ArchiCAD | Use Zones for spaces and enable Base Quantities in the IFC Translator so IfcSpace exports NetFloorArea/GrossFloorArea. |
| Tekla | Spaces are limited in Tekla; if required, define them and enable quantity export, or generate them in the architectural model. |
| Allplan | Create Rooms (spaces) and enable IFC quantity export so IfcSpace carries area quantities. |
How it works
Find and fix it in the browser
The whole flow runs client-side — your IFC file never leaves your machine.
01
Open your IFC file
Open IFC Viewer Online and drag & drop your IFC file. It is parsed locally in your browser via WebAssembly — nothing is uploaded.
02
Run the Health Score validation
Run validation. The "Space missing floor area" check (RULE_SPACE_AREA_MISSING) flags every affected element and pinpoints it in the model tree.
03
Fix in Revit
Rooms export as IfcSpace but quantities are missing. Enable “Export base quantities” (Pset/QTO) in the IFC export options and make sure Rooms are…
04
Fix in ArchiCAD
Use Zones for spaces and enable Base Quantities in the IFC Translator so IfcSpace exports NetFloorArea/GrossFloorArea.
05
Fix in Tekla
Spaces are limited in Tekla; if required, define them and enable quantity export, or generate them in the architectural model.
06
Fix in Allplan
Create Rooms (spaces) and enable IFC quantity export so IfcSpace carries area quantities.
07
Re-validate
Re-export from your authoring tool and re-run validation to confirm the issue is resolved and your Health Score improved.
Related checks
Other Data quality checks →
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