Vizinhos em Lisboa Charts 109 Simultaneously Authorised Noise Licences for May 2026 — Santa Maria Maior, Arroios and Misericórdia Carry the Saturation Load From a 1,020-Licence Window and 26,539 Resident Complaints

Residents' association Vizinhos em Lisboa published a 60-page report on Monday 25 May framing May 2026 as a historic peak for noise saturation in the Portuguese capital, with 109 noisy events authorised to run simultaneously across the city. The figure stacks 21 popular street arraiais (the run-up to the Festas de Lisboa), the opening week of the Feira do Livro at Parque Eduardo VII, two outdoor markets in Avenidas Novas and several free-entry cultural festivals onto the same calendar window.

The methodology behind the headline number is unusually granular. The association cross-referenced 1,020 Temporary Occupation of Public Space (UCT) licences issued by the Câmara Municipal de Lisboa between 2021 and 2027 against 26,539 noise complaints logged through the Câmara's own Na Minha Rua app between 2017 and 2025. Three central parishes — Santa Maria Maior, Arroios and Misericórdia — absorb the bulk of the saturation, combining the highest licence counts with the highest density of resident complaints over the eight-year complaint series.

The report's structural finding is that the Câmara has no internal mechanism to control simultaneous noise load by freguesia. Each Special Noise Licence (LER) is evaluated on its own merits without reference to how many other LERs are already active inside the same parish on the same night, which the association argues makes preventive management of acoustic impact "structurally impossible." LER paperwork is also not published, which the report says deprives residents of the procedural standing required to challenge issuances in administrative courts ahead of an event.

Six concrete proposals are tabled for the autonomy council ahead of the September licensing review. The first requires mandatory consultation of the complaint history at any address inside the prior 12-month window, with recurrent prior complaints generating an unfavourable presumption against issuing a new licence. The second introduces weekly acoustic monitoring for any event running longer than 30 days, with results published openly. The third caps noise-licence duration at 45 days inside the city's historic acoustic-sensitivity zones. The fourth redirects new event capacity to the seven freguesias the report identifies as carrying low saturation. The fifth makes LER documentation publicly searchable. The sixth proposes a city-wide cap on simultaneous active LERs by parish.

The acoustic-impact argument is supported by an extended public-health citation block. The report links sustained exposure to nocturnal urban noise to chronic fatigue, cardiovascular disease, hypertension, and measurable drops in school and workplace performance — drawing on WHO European Region data and a 2025 Câmara measurement file that recorded levels 20 decibels above WHO recommendations across 70% of monitoring points, with Carris buses identified as one of the principal contributors.

The Câmara, asked by Público on Sunday, declined to comment in detail ahead of receiving the formal petition, but executive councillor for licensing pointed reporters to the broader 2026 acoustic-relief programme already in motion for the Humberto Delgado airport corridor — separate from the event-licensing axis the residents are challenging.

Vizinhos em Lisboa plans to deliver the report to the Assembleia Municipal in the first week of June and to file a parallel complaint at the Provedoria da Justiça. The next pressure point is whether the Festas de Lisboa licences for 12-30 June trigger renewed complaints under the existing rules. Sources: Observador, Público, RTP.