---
name: ifc-asset-register
description: Extract an asset register for handover and facility management (COBie-style Facility, Floor, Space, Type, Component and System sheets) from an IFC model, and list every field still missing for handover - manufacturer, model, serial number, installation date, warranty, space. Use when the user mentions handover, as-built data, COBie, O&M manuals, "entrega a mantenimiento", "inventario de activos", facility management or digital twin onboarding.
---

# IFC asset register (handover)

## Inputs
- The as-built (or latest) IFC model. Read-only.
- Optional: the owner's handover requirements (AIR/EIR, COBie requirement, CAFM import template) and the asset classes they care about.

## Procedure
1. `pip install ifcopenshell` (tested with 0.9.0).
2. Run `python scripts/asset_register.py model.ifc --out-dir register` (use `--classes IfcPump,IfcFan,...` to match the owner's list; the default covers doors, windows, sanitary, appliances, lighting, HVAC and fire equipment).
3. Report counts (floors, spaces, types, components, systems) and the missing-data percentage from `missing_data.csv`.
4. Group the gaps by who can fill them:
   - Designer/modeller: spaces without names, components not located in a space, elements without type.
   - Contractor/installer: manufacturer, model, serial number, installation date (they come from submittals, delivery notes and commissioning sheets, not from the model).
   - Owner: naming conventions, asset classification codes.
5. Propose the fill-in route: a spreadsheet per trade with the GlobalId column locked, then re-import into the authoring tool or write to the IFC with a reviewed script on a copy.
6. If the owner needs real COBie 2.4 (or a specific CAFM template), say this output is COBie-style and map columns to their template before delivery.

## Output
- Table of sheets and row counts, gaps by responsible party, and the register folder.

## Never
- Never fill manufacturer, serial numbers or dates with plausible values; empty means "to be collected".
- Never claim COBie compliance; this is a structured extract to check and complete.