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How to calculate quorum at a condominium meeting (under Portuguese law)

21 July 2026·2 min read

Calling a condominium owners' meeting is the easy part. The hard part is knowing, on the day, whether the meeting can actually pass resolutions. This is where most resident administrators hesitate — and where most procedural mistakes happen.

What quorum actually means

Quorum isn't counted by number of people, but by permillage — the share each owner holds of the whole building (all shares always add up to 1000‰). A meeting with 3 owners present can have quorum while another with 10 doesn't, depending on the weight of each unit.

First call

Under Portuguese condominium law, a meeting is validly held at first call when owners present (or represented by proxy) hold at least:

  • Half of the building's total value (500‰), for resolutions requiring a simple majority;
  • Qualified majorities (two-thirds or unanimity) require that share to be actually present, depending on the matter being decided — for example, works that change the building's architectural line.

Second call

If quorum isn't reached at the scheduled time, the law allows the meeting to reconvene at a second call, typically 30 minutes later, with any number of owners present — provided that second time was stated in the original notice. Resolutions requiring qualified majorities remain subject to those majorities even at second call.

Most common mistakes

  1. Not stating the second-call time in the notice, forcing the whole process to be redone.
  2. Confusing "majority of those present" with "majority of the building's total value".
  3. Not checking proxies before opening the session.

The ActiasGest virtual assistant calculates quorum automatically in real time during the meeting, based on each unit's registered permillage — avoiding these mistakes and later disputes about the validity of resolutions.

If you manage a building (or several), it's worth reviewing before every meeting: who is registered, each unit's permillage, and which majority the agenda requires for each item.