Barcelona's Neighborhood Budget: Hybrid by Design
Barcelona put €30M to the most-voted neighborhood proposals in every district on its own open-source platform — with street-corner support points feeding in the neighbors who would never participate online.
Barcelona's 2020–2023 participatory budget dedicated €30 million to fund the most-voted neighborhood proposals in each of the city's districts, run on Decidim — the open-source platform the city itself birthed. Residents drafted geolocated proposals with budgets attached; 64,571 people participated digitally and 11,970 in person, through a pandemic.
The number worth studying is the second one. The process was hybrid *by design*: neighborhood meetings and street-level 'support points' — staffed tables where residents could learn, propose, and vote with help — fed in exactly the people a digital-only process filters out. The platform held the ledger; the folding tables held the democracy.
What it teaches: a city can run neighborhood-grained democracy on commons-licensed software it governs with its citizens — and the transferable practice isn't the platform config, it's the support point. Any block remixing a digital decision process should budget for its equivalent: a card table, a laptop, and a patient neighbor at the farmers market.
Details
- era: 2020–2023
- place: Barcelona, Catalonia
- illustrates: decidim, six-lessons-neighborhood-tech
- source note: Participation figures per Decidim's published case study.
- practice kind: story
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Build prompt
Build: A Front-Porch Digest for One Block
A starter build: fork Front Porch Forum's constitution, not its code — real names, one geography, one email a day, a rotating…
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Build prompt
Build: A Living Asset Map
A starter build bridging both new shelves: an asset-based community development map where the assets are neighbors' own declared gifts,…
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Build prompt
Build: A Third-Places Map for Your Neighborhood
A starter build: a local Ushahidi — neighbors collectively map the porches, stoops, cafés, courts, and corners where the neighborhood…
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Build prompt
Build: Adopt-a-Thing for Your Block
A starter build: the Adopt-a-Hydrant pattern, remixed — a map of small civic objects (tree wells, storm drains, benches, little libraries)…
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Build prompt
Build: Participatory Budgeting for a Very Small Budget
A starter build: run real participatory budgeting on a block association's actual money — propose, develop, vote, do — sized so the whole…
Contributed by Barcelona City Council & the Decidim community · Barcelona's districts · Decidim's own case study (2026)
Original source: https://decidim.org/blog/2026-04-07-case-study-participatory-budget-2020-2023-in-barcelona/
See something to fix or add? Suggest an edit on GitHub — the commons lives in git too, and its history is the changelog.
local-civic-techcivic-tech-storyparticipatory-budgetinghybriddecidim