The registered association (Idealverein, § 21 BGB). Cheapest legal person to found; used as Hausverein inside the Mietshäuser Syndikat, as Projektverein that pools equity for a Dachgenossenschaft, or (rarely) as direct house owner of a small Wohnprojekt.

  • Founding: ≥ 7 members for registration (§ 56 BGB); written Satzung; Gründungsversammlung; Vorstand; entry in the Vereinsregister (Amtsgericht) with notarised signatures — no notarial deed, no minimum capital.
  • Cost / time: register fee plus notarised signature; typically weeks, not months. Open question (not a fact): exact GNotKG/JVKostG fees vary by Land and were not verified today.
  • Limit: an e.V. may not have an economic purpose as its main aim (§ 21/§ 22 BGB). Owning one house and letting to members is tolerated as Nebenzweck; letting at scale or to non-members pushes it towards a wirtschaftlicher Verein (needs state Verleihung) or a Rechtsformzwang challenge. Banks share this doubt.
  • Liability: only the Verein’s assets; members owe only their Beitrag.
  • Exit: Austritt by Kündigung, notice ≤ 2 years (§ 39 BGB); no equity refund unless the Satzung creates member loans — an e.V. cannot issue shares.
  • Tax: gemeinnützig option (AO §§ 52, 55) incl. wohngemeinnuetzigkeit from 2025; alternatively § 5 Abs. 1 Nr. 10 KStG exemption for Vermietungsvereine letting ≥ 90 % to members.
  • Banks: weak borrower alone (no equity instrument, volatile membership); works as Gesellschafter of a Haus-GmbH or as partner of a co-op.
  • Money: weakest form for Förderung — no shares, so no kfw-134; reaches rental and gemeinnützig lines only. Full list in Programme map below.

Detail

Syndikat pattern. The Haus-GmbH has exactly two shareholders: the Hausverein and the Mietshäuser Syndikat GmbH. The Verein decides everything (tenants, financing, rents); the Syndikat has one vote only on sale, conversion to Eigentumswohnungen or similar access to the asset, so both must agree — resale is practically blocked (syndikat.org, 2026: 215 Hausprojekte). Solidarbeitrag ≥ €0.10/m² Nutzfläche/month.

Hamburg pattern. The Agentur für Baugemeinschaften describes groups bringing their equity “in der Regel als GbR oder als e.V.” into a Projektträger-Genossenschaft (Kurzzusammenfassung Eigentumsformen, Feb 2023).

Gemeinnützigkeit trade-off. § 55 AO: no distribution to members, capital returned at nominal, Vermögensbindung on dissolution. Fine for a Hausverein; incompatible with members expecting any equity upside.

Programme map

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