aspern Seestadt Wien — Vienna's 11,500-Home Lakeside District Built Around a 40/40/20 Modal-Split Target

Aspern Seestadt is a new district on a former airfield in Vienna's 22nd district, developed by Wien 3420 aspern Development AG. Plans foresee about 11,500 homes, space for 20,000+ jobs and college places, and at least 25,000 residents in the 2030s. By early 2025 about 12,000 people lived there and about 5,000 worked there, across three finished quarters (Pionierquartier, Seeparkquartier, Am Seebogen), with Seecarré next.
Mobility is the district's experimental core: a target split of 40% walking/cycling, 40% public transport and 20% car trips, pursued through a motivation-led approach with restricted parking, garage fees that fund alternatives to car ownership and subsidised bike rental. The developer reports 242 cars per 1,000 residents and says its construction logistics avoided about 7.5 million truck-km (roughly 8,400 t CO2).
In 2024 Wien 3420 completed 'EVA', a two-year evaluation with Urban Innovation Vienna involving 100+ experts, which reported that 93% of residents were satisfied or very satisfied. A first comprehensive KPI report was scheduled for 2025. The aspern.mobil LAB, linked to TU Wien, published a 2026 study (17 resident interviews, six experts, two workshops plus mobility-survey data) on mobility needs of older residents. Academic resident-survey theses report high walking and cycling shares but long commutes, since few residents work in Seestadt.
Caveat: most headline figures are developer-reported; a measured, independently verified modal split was not found, so the evidence is treated as promising rather than conclusive.

Read the full analysis: https://www.aspern-seestadt.at/en/blog/post/from-evaluation-to-the-future-of-seestadt