Maximum duration, periodic review, consular rights
The maximum duration of immigration detention is governed by § 80 FPG: as a rule four months within a two-year period, extendable on additional conditions to up to 18 months (for example where the person concerned fails to cooperate, where the home state delays document issuance, or where travel documents must be procured). Each extension must be reasoned separately and is itself subject to appeal. A blanket extension "because proceedings are still pending" is unlawful, the BVwG has held in numerous decisions that the authority must document concrete efforts to terminate residence and the prospect of success.
Beyond the appeal, § 80 (6) FPG provides for a periodic review of immigration detention by the Federal Administrative Court: where detention lasts longer than four months, proportionality must be reviewed of the court’s own motion, and thereafter at intervals of eight weeks. This mechanism operates independently of any appeal, it is the second safety net. At each review, the authority must produce updated facts: state of the residence-ending procedure, efforts to obtain travel documents, cooperation by the person concerned.
From a defence perspective, case-file management is decisive: every submission to the authority, every confirmation of cooperation, every piece of evidence on stable living conditions enters the file. In proceedings before the BVwG, the file is the principal source of fact-finding. We build a parallel file alongside the authority file, and ensure that facts speaking for our client are not lost in an authority chronology weighted one-sidedly towards departure obligations. For follow-on detention, that is, renewed immigration detention after a short interruption, particular care is needed. The authority may not work around the maximum duration in § 80 FPG by artificially segmenting detention phases. A person held in detention several times without any meaningful change in actual circumstances has a strong proportionality argument.
Alongside this stands the right to consular notification under Art. 36 of the Vienna Convention on Consular Relations (VCCR): every detained foreign national has the right, upon request, to have the consulate of their home state informed without undue delay, and to unhindered consular access. Where this right is disregarded, a procedural defect arises; in particularly serious cases, state liability comes into play. In practice, consular support is an important stabiliser, especially for German nationals, and for clients from the Western Balkans, often the only bridge to family and translation. We routinely check whether Art. 36 VCCR has been complied with and incorporate any failure into the appeal.