The Gesellschaft bürgerlichen Rechts is the default vehicle of a Baugemeinschaft (Bauherrengemeinschaft, Baugruppe) from first meeting to completion. Hamburg’s Agentur für Baugemeinschaften describes the sequence: Planungs-GbR → Bau-GbR → dissolution on completion → WEG (owner-occupiers) or transfer to an eG (rental co-op).

  • Founding: Gesellschaftsvertrag, no form, no capital, no register — but from 2024 land can only be booked to a GbR that is entered in the Gesellschaftsregister as eGbR (§ 47 Abs. 2 GBO; see mopeg-egbr).
  • Cost / time: a lawyer-drafted Planungs-/Bau-GbR-Vertrag plus notarised eGbR filing; days to weeks. The expensive part is the land deed (§ 311b BGB).
  • Liability: every partner is personally and jointly liable for all GbR debts (§ 721 BGB) — including the whole construction loan — and for five years after leaving. This is why the GbR is a phase, not a home.
  • Decisions: unanimity by default (§ 715 BGB); the Vertrag should set majorities, cost keys, exit and replacement rules.
  • Exit: Kündigung/Ausschluss (§ 723 BGB); the leaver gets an Abfindung at share value (§ 728 BGB) — the group must find a replacement or refinance.
  • Bauträger vs Bauherrengemeinschaft: with a Bauträger the buyer acquires finished Wohnungseigentum and pays Grunderwerbsteuer on land and building; as Bauherren the group buys bare land and contracts architects itself — tax only on land if the contracts are genuinely independent (see grunderwerbsteuer-baugemeinschaft).
  • Money: the GbR is rarely the applicant — each household borrows in its own name (kfw-124, kfw-300). Group-level lines are rare; see Programme map.

Detail

Interim financing is the pain point: banks price the Bau-GbR on the weakest partner, so groups usually sign individual loan tranches secured on their future unit (Teilungserklärung recorded early, § 8 WEG) rather than one group loan. Where a municipality sells via konzeptvergabe, the Planungs-GbR is often the only entity that exists at bid time; check that the Konzeptvergabe terms allow later transfer to WEG/eG without triggering repurchase clauses or a second Grunderwerbsteuer.

Programme map

Which money this form actually reaches. Terms live in the linked programme notes.