Altering a listed building: do you need a permit in Portugal?

Independent site: we are not a public authority, and this is not legal or tax advice.

Altering, extending, rebuilding or demolishing a listed building, or one being listed, needs a licence. The minor-works exemptions do not apply to it.

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Answer

Licence

Prior communication

Only after a favourable prior information (informação prévia) that covers all the required elements (art 4(4)(l))

Minor works

Excluded for listed buildings of national, public or municipal interest and for listed groups or sites (art 6-A(2))

Council rules

Your council can add detail in its own building regulation where the law lets it, so ask before you start.

Legal basis

RJUE art 4(2)(d), 4(4)(l) and 6-A(2), RJUE (Decreto-Lei 555/99) as republished in the Annex of Decreto-Lei 108/2026

Sources

data.dre.pt/eli/dec-lei/108/2026/05/29/p/dre/pt/pdf

Checked

2026-11-05