Garden boundary wall: do you need a permit in Portugal?

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

A garden boundary wall up to 1.8 m high that does not face a public road is exempt as a minor work. A wall facing the street is outside that exemption, so it needs a licence unless art 4 lets you use prior communication.

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Answer

Exempt up to 1.8 m if it does not face the public road

Height

Fence walls (muros de vedação) up to 1.8 m

Position

Must not face the public road

Wall facing the street

Not covered by the exemption; the general rule is a licence (art 4(2)(c))

Before you start

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

Heritage exception

Minor-works exemptions do not apply to listed buildings, buildings in the protection zone of a listed building (window frames excepted), or buildings inside 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 6-A(1)(b) and 4(2)(c), 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