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property_id is the join key shared with every other domain — see the Data Model Overview for the complete cross-domain diagram and the join-key reference table. The diagram below repeats the Property-internal joins (solid) plus every edge that touches a Property table from elsewhere (dashed).

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properties

GET /v1/property/properties — property master data: address, usage type, and coordinates.
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string
required
Unique property identifier.
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string[]
Entrance / street labels for the property, up to five. Empty entries are omitted.
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object
The management mandate period for this property.
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string
Property number of the accounting unit this property books under. A verified, self-referencing foreign key back onto property_id — resolve it against another row on this same endpoint.
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string
Property name.
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string
Postal code.
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string
City, cleaned.
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string
Country. Currently always empty across all properties.
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integer
Year the property was built.
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number
Geographic longitude.
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number
Geographic latitude.
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string
Federal state.
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string
Usage type of the property.
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string
Property category: rental property, general-ledger entity, client, or management entity.
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string
Tax-model code. No documented label mapping exists for this code.
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string
Link to the associated document in the DMS.

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property_structure

GET /v1/property/property_structure — every structural component of a property, flattened into one row per component: the property itself, a building, a building part / entrance, a floor, or a unit / rental area.
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string
required
Unique property identifier.
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string
Cost-centre business code for this row. Matches accounts.account_number, not accounts.account_id — see the Overview for the full join-key reference.
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integer
Identifies a unit. Only populated for rows that represent a unit / rental area.
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object[]
The component’s position in the property’s structural hierarchy, as an ordered list of {name, type} levels. Empty levels are omitted.
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object
What kind of structural component this row is.
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object
Mandate period for this component.
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object
Validity period of the unit.
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object
Combined active window across the underlying source periods.
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boolean
Whether this row comes from a genuine “Beteiligungskreis” (shared-ownership group), independent of client.
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boolean
Whether this row belongs to the property’s core building structure (building, building part, or floor) rather than a unit.
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string
Level of the core building structure: building, building part, or floor. null when is_core_structure is false.
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string
Property name.
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string
Cost-centre name.
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string
Unit number.
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string
Address of this component.
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string
Entrance label.
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string
Building-part label.
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string
Floor label.
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string
Unit name.
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string
Location description.
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string
Usage type of the unit.
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boolean
Whether this unit is excluded from marketing.
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number
Target rent per square metre.
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number
Market rent per square metre.
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string
Heating type.
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string
Vacancy-reason code.
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string
Requires the personal grant. Free-text comment on the vacancy reason.
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date
Start of the vacancy.
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string
URL of a photo of the unit.
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number
Unit size in square metres.
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number
Total target rent.
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number
Total market rent.
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string
Link to the associated document in the DMS.

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property_creditor_services

GET /v1/property/property_creditor_services — which creditors (service providers) are assigned to a property, by trade.
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string
required
Unique property identifier.
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string
required
Identifies the creditor. See Stakeholder.creditors.
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object
Whether this creditor holds this trade exclusively for the property.
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string
The trade this assignment covers.

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technical_objects

GET /v1/property/technical_objects — technical installations and equipment, with location, maintenance, and inspection details.
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string
required
Unique property identifier.
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string
Creditor responsible for the object, if any.
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integer
Unit the object is located in, if assigned at that level.
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integer
required
Unique identifier for the technical object.
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string
Business number of the technical object.
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string
Name of the technical object.
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string
Type / category of the object.
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string
Requires the personal grant. Employee responsible for the object.
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date
Installation / manufacture date.
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date
Date of the last inspection.
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date
Date of the last maintenance.
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string
Requires the personal grant. Free-text comment.
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boolean
Whether this object is a meter.
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boolean
Whether this object is subject to maintenance.
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string
Maintenance-type code.
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string
Creditor responsible for maintenance.
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string
Requires the personal grant. Name of the maintenance creditor.
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boolean
Whether this object is subject to inspection.
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string
Inspection-type code.
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boolean
Whether this object is decommissioned.
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string
Service contract covering this object, if any. See Contracts.service_contracts.
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string
Foreign key into property_structure. Only set for rows without a floor_area_id — where floor_area_id is set, that’s already the join path to the unit and this field stays empty.
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object
Warranty period, if recorded.