# Vlietland nature area development dispute > Live situation record from CLSTR: https://clstr.news/situations/vlietland-nature-area-development-dispute > Updated: 2026-08-27T15:10:01.000Z. Sources: 4. Developments: 2. Political parties and organizations have issued an open letter to PRO Leidschendam-Voorburg, demanding the party honor its commitment to keep the Vlietland nature area open and green. Signatories, including representatives from Partij voor de Dieren, SP, D66, CDA, Volt, and ChristenUnie, argue that the party must uphold the ‘Wij kiezen voor een Open en Groen Vlietland’ manifest, which was presented as a public promise to protect the area from development. The dispute involves long-standing plans to build a villa park containing 222 holiday homes in the recreational area between the Vliet and the A4. Opponents, including resident groups and nature organizations, claim the development would destroy protected species' habitats and diminish local green space. While coalition negotiations in Leidschendam-Voorburg have finished, specific agreements regarding the Vlietland area have not been released to the public. ## Timeline ### 2026-08-27: PvdA faction at Vallei en Veluwe Water Board to become PRO The PvdA faction at the Vallei en Veluwe Water Board is rebranding as PRO and will join a progressive coalition with Water Natuurlijk, D66, and Volt for the 2027 elections. 3 sources. https://clstr.news/cluster/pvda-faction-at-vallei-en-veluwe-water-board-to-become-pro ### 2026-08-24: Vlietland nature area: Parties urge PRO Leidschendam-Voorburg to honor green commitment Political parties and environmental groups are urging PRO Leidschendam-Voorburg to honor its promise to protect the Vlietland nature area from proposed holiday villa developments. 2 sources. https://clstr.news/cluster/vlietland-nature-area-parties-urge-pro-leidschendam-voorburg-to-honor-green-commitment --- Cite as: Vlietland nature area development dispute. CLSTR, https://clstr.news/situations/vlietland-nature-area-development-dispute