The Stadtbodenstiftung is a nonprofit citizen foundation based in Berlin that removes urban land from speculative markets to secure it for community-led, public-benefit uses. Inspired by the Community Land Trust model, it acquires land through purchases, donations, or inheritances and leases buildings via hereditary building rights (Erbbaurecht) to collective actors for affordable housing, commercial spaces, social centers, cultural projects, or community gardens.135
Its mission centers on countering property speculation by democratically managing land, protecting existing tenants from rent hikes and displacement, and enabling neighborhood-initiated developments on vacant lots or underused buildings.14 Key activities include land acquisition below market value—ideally at yield value from supportive owners—project development with local partners, and financing operations through modest ground leases that support ongoing purchases without inflating prices.4 The foundation mobilizes civil society resources, strengthens neighborhoods, and promotes solidarity-based urban development, with support from Berlin's Friedrichshain-Kreuzberg district office and state funding.1
Geographically focused on Berlin, it operates locally while engaging in European networks, such as hosting events for the European Community Land Trust Network in 2024.1310 Founded in spring 2021 by nearly 150 founding patrons who raised over €160,000 in initial capital, it emphasizes base democracy through community organizing and elected bodies.1 Key figures include Sabine Horlitz, who manages operations, and Albrecht Sprenger.5 This approach directly advances affordable housing by prioritizing low-cost, long-term leases and sustainable housing through community-controlled, non-profit land stewardship that preserves social and cultural uses.145