Windows near 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.

Replacing window frames in the protection zone of a listed building is exempt if the new ones improve energy efficiency, keep the same geometry and look the same from outside. For a listed building itself it is not exempt.

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Answer

Exempt in the protection zone if the conditions are met

Conditions

Better energy efficiency, same geometry and proportions, outside finish identical to the original

Listed building

Not exempt for the listed building itself or listed groups and sites (art 6-A(2))

Before you start

Tell the council at least 5 days before work begins, even for exempt work (art 80-A).

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 6-A(1)(j) 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