How to build a penthouse dossier that survives the next listing update
A source-and-change-history method for separating the building, the physical unit and the offer currently attached to it.
· Building Intelligence · 6 min read
Use three connected records
The building describes a shared place and management context. The physical unit describes a particular residence within it. The offer describes a sale or rental position at a point in time. Keeping these records separate prevents a changed asking price from creating a new property and allows two different offers to be compared without mixing their features.
- Building: management, facilities, shared rules and location.
- Unit: layout, area definition, floor, orientation and physical attributes.
- Offer: asking amount, currency, availability, included items and source freshness.
Give every material field a provenance state
A source, timestamp and reviewer should accompany important claims. Conflicts need to remain visible until resolved. If a document is private, publish only an approved projection of its contents. If photography has not been licensed, record that limitation instead of filling the gap with an image of another unit or a generated interior presented as real.
Separate the price evidence — Apply the same discipline to asking, completed and index figures.
Make updates part of the product
A dossier becomes more valuable when a buyer can see what changed and when. Availability, asking price, included furnishings, documents and management answers can all change independently. Save change events, alert interested buyers with permission and keep withdrawn records out of the live result set without erasing their research history.
Turn the dossier into action — Use the evidence checklist to assign and resolve open questions.