Definition : Share (common portion)

Share in the right of ownership that each co-owner holds in the common portions. This right of ownership is determined in accordance with the relative value of each fraction. The share is generally expressed as a percentage or thousandth, in the constituting act of the co-ownership.

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Any co-owner may have the relative value of their fraction, as well as the allocation of common expenses, revised according to certain conditions and formalities. To do so, it is necessary to proceed with an appeal to revise the relative value of the fractions. Furthermore, a co-owner may wish to modify the relative value of their fraction. Therefore, they will have to request the prior consent of the Board of directors or the general meeting of co-owners, depending on what is required. This revision or modification of the relative value has an impact on the proportionate share of the right of ownership (which the co-owners hold in the common portions), the number of votes they can cast at the meeting of co-owners and the allocation of common expenses. On this question, Article 1064 of the Civil Code of Québec stipulates that: “Each co-owner contributes to the common expenses in proportion to the relative value of his fraction.”
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If you are shopping for an apartment, ask yourself if it is located in a divided or undivided co-ownership. Although these two concepts are similar, as they ultimately aim to share the same building by several people called co-owners, the legal and financial implications are not the same. These two types of co-ownership thus have very different terms of ownership, ownership and liability between the co-owners of a building. A look at the main distinctions between divided co-ownership and undivided co-ownership.  
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The COVID-19 health crisis and its procession of government restrictions to limit gatherings have often made it impossible to regroup. The legislator was forced to organize the rescue of legal persons, banned from assemblies, to preserve, at least for a time, their functioning. The syndicates of co-owners have thus adopted alternatives to face-to-face meetings of co-owners. Social distancing obliges, COVID-19 has given rise to a phenomenon in co-ownership: virtual meetings of co-owners, also called remote meetings. In order to perpetuate this way of doing things, the law now authorizes syndicates of co-owners to hold meetings by technological means.
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Administrative, maintenance, replacement, improvement or alteration expenses of the common portions are divided among the co-owners. General common expenses are to be distinguished from particular common expenses, which are allocated under different rules. In the first case, it is the relative value of each fraction that is used to establish the co-owners contribution. As for special common expenses arising from common portions for restricted use, the co-owners using them are alone responsible of the expenses resulting therefrom.  
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Question: In the declaration of co-ownership, there is a table determining the relative value of the apartment I plan to buy. And I am told that the allocation of common expenses is particularly in relation to this same "relative value". I wonder what exactly it is and whether it can be changed at the time of purchase?
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