Special noise licence for works in Portugal

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To work outside the permitted hours you need a special noise licence (licença especial de ruído) from the municipality, requested at least 15 working days before the works start (Regulamento Geral do Ruído, art. 15.º).

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Law

Regulamento Geral do Ruído (approved by Decreto-Lei n.º 9/2007)

Article

15.º

Who issues it

The municipality (câmara municipal), in exceptional and duly justified cases (n.º 1)

Deadline

Apply at least 15 working days before the works start (n.º 2)

The request must give

The exact location, start and end dates, hours, the reasons for working then, and noise-reduction measures where they apply (n.º 2)

With the building permit

If requested before or with the works application, the noise licence is issued on the same date as the permit (n.º 3 and 4)

Limits

For a licence longer than one month: 60 dB(A) in the evening and 55 dB(A) at night at nearby homes and other sensitive receptors (n.º 5)

Official text

pgdlisboa.pt/leis/lei_mostra_articulado.php?nid=1210&tabe...

Sources

pgdlisboa.pt/leis/lei_mostra_articulado.php?nid=1210&tabe...

Checked

2026-11-05