22@Barcelone — Du Poblenou industriel au quartier d'innovation, coûts compris

22@Barcelona is a 2000 rezoning of roughly 200 hectares of the formerly industrial Poblenou district, approved with momentum from the 1992 Olympics. Under the new '22@' planning designation, landowners could redevelop for knowledge-intensive uses in exchange for surrendering about 30% of their land or floor space for public and social uses such as parks, housing and amenities.

Uptake grew over time, reaching about 80% of eligible owners by 2015. By the mid-2020s the district hosted more than 8,000-9,000 companies generating over 11% of Barcelona's total business turnover and employing an estimated 90,000-140,000 workers depending on the year and boundary used; of roughly 4,500 companies that had relocated in by 2010, about 47% were new start-ups and 31% were technology or knowledge-based firms. The district also hosts the Mobile World Capital coordination function for roughly 900 ICT companies.

Two decades of independent academic study — including a 47-indicator assessment framework published in the Journal of Evolutionary Studies in Business, and research on 'productive gentrification' around the Can Ricart industrial complex — document real costs alongside the growth: displacement of long-standing manufacturing and craft businesses, and a roughly 86% rise in Poblenou housing prices between 1997 and 2002, outpacing the citywide average. Evidoria records 22@ as a well-evidenced case precisely because both the growth and these documented costs are independently measured, and any city replicating the model should plan to mitigate displacement and housing-cost inflation.