What this means

Germany is a local-rule-heavy implementation case with a visible national SDEP area-data publication.

Berlin requires a registration number for temporary holiday-apartment rental of a self-used main or secondary residence, and broader Zweckentfremdung rules protect housing from conversion into holiday accommodation.

Implementation status

Berlin service guidance covers applying for temporary holiday-apartment rental and issuance of a registration number.

Other cities and municipalities, including Hamburg, Munich, Freiburg, Konstanz, Stuttgart, and Mannheim, operate local housing-use restrictions or registration/permit models.

Technical interface

The Federal Network Agency publishes an official SDEP available-areas download. Its 13 August 2026 workbook lists ten regulated areas and maps them to NRW, Hamburg, and Berlin competent authorities.

Area identifiers are not uniform: NRW uses readable IDs while Hamburg and Berlin use UUIDs. Integrations should treat area IDs as opaque and retain an area-to-competent-authority mapping.

No Germany-specific national SDEP OpenAPI documentation, source code, sandbox, registration-number validation API, or public platform onboarding process is currently available.