If a person who convenes a meeting held by co-owners of the grounds, etc. (hereinafter referred to as a "meeting of co-owners of the grounds, etc.") cannot ascertain the whereabouts of a co-owner of the grounds, etc. (excluding one who has notified the place where they are to receive notices pursuant to the provisions of Article 35, paragraph (3) as applied mutatis mutandis pursuant to the preceding Article), the notice under Article 35, paragraph (1) as applied mutatis mutandis pursuant to the preceding Article may be given by posting it somewhere conspicuous within the grounds of the building pertaining to the destroyed building with exclusively-owned areas.
In the case referred to in the preceding paragraph, the notice is deemed to have arrived at the time when it was posted pursuant to the provisions of that paragraph; provided, however, that if the person who convenes the meeting of co-owners of the grounds, etc. was negligent in not knowing the whereabouts of that co-owner of the grounds, etc., the notice does not have the effect of arrival.