A cross-jurisdiction catalogue of the public-cooperative mechanisms that let public authorities put land (the hardest cost) into the hands of cooperatives, from the review International Policies to Promote Cooperative Housing (Baiges/Lacol, Ferreri/ IGOP-UAB, Vidal/CIDOB; La Dinamo Fundació). Land access, not capital, is often the real gate — this is the land-side complement to the capital-side gap in moba-catalytic-capital. Interventions cluster across three moments (production, access, long-term affordability); the land mechanisms are:

a) Sale of public land — below market, on merit

  • Concept-based competitive tenders (Germany: Konzeptverfahren / Konzeptvergabe in Hamburg, Berlin): land awarded on the best concept, not the highest bid, often at a reduced price for affordable housing.
  • Systematised public-asset sale to cooperatives also seen outside the EU (Uruguay’s Portfolio of Properties).

b) Lease of public land — keep land public

  • Leasehold (typically ~99 years) instead of sale, keeping land in public ownership (Germany, e.g. Hamburg, leasing municipally for the first time). The same surface-rights logic underpins Sostre Cívic’s Catalan model.
  • Netherlands: unlimited-lease erfpacht with fixed or periodically reset ground rent.

f) Pre-emption & first-refusal rights — a route to acquire

  • Denmark (since 1976): tenants get pre-emption over their building if they form a cooperative, requiring at least 60% of tenants in favour.
  • Germany: pre-emption used by tenants to acquire and form the Mietshäuser Syndikat (syndikat-haus-gmbh); municipalities hold pre-emption in Soziale Erhaltungssatzung (“social composition protection”) areas, offering land to limited-profit developers cheaper.

Note: a policy survey, not a live programme. Use it to recognise which mechanism a given jurisdiction offers; verify the specific local rule before advising a group.