If two or more buildings are located in a single housing complex and the land or attached facilities located in the housing complex (including rights related to the land or facilities) is co-owned by the buildings' owners (or the unit owners, for buildings with exclusively-owned areas), all of those owners together (hereinafter referred to as the "owners of buildings in a housing complex") may organize an association to manage the land, attached facilities, and buildings with exclusively-owned areas that are located within the housing complex; and may hold meetings, establish bylaws, and assign a manager, pursuant to the provisions of this Act.

①The bylaws referred to in Article 30, paragraph (1) as applied mutatis mutandis pursuant to the preceding Article may establish that a building (inclusive of a portion of a building provided for in Article 1) constituting the attached facilities of a single housing complex is a common area in a housing complex. This being the case, a common area may not be asserted against a third party as a common area unless it is registered as such.

②A person who wholly owns two or more buildings that are located in a single housing complex may establish bylaws under the preceding paragraph by a notarial deed.

③The provisions of the main clause of Article 11, paragraph (1), Article 11, paragraph (3), and Articles 13 through 15 apply mutatis mutandis to the common areas in a housing complex. This being the case, the term "unit owner" in the main clause of Article 11, paragraph (1) is deemed to be replaced with "the owner of a building in the housing complex as prescribed in Article 65" and the term "exclusively-owned area" in Article 14, paragraph (1) and Article 15 is deemed to be replaced with "building or exclusively-owned area".

①In order to establish the bylaws referred to in Article 30, paragraph (1) as applied mutatis mutandis pursuant to Article 66 concerning the following things, for the land or attached facilities set forth in item (i), the consent of more than three-fourths of the co-owners who hold more than a three-fourths share in all of the land or all of the attached facilities is required, and for the building set forth in item (ii), the adoption of a resolution by at least a three-fourths majority of the unit owners present (excluding those who do not hold voting rights; the same applies hereinafter in this paragraph (excluding item (i))) and at least a three-fourths majority of their voting rights, at a meeting under the provisions of Article 34 for the whole building (limited to a resolution adopted at a meeting attended by a majority of the unit owners (or, if a higher proportion has been specified in the bylaws, that proportion or more) who hold a majority of the voting rights (or, if a higher proportion has been specified in the bylaws, that proportion or more)) is required:

②The provisions of Article 31, paragraph (2) apply mutatis mutandis to a meeting resolution referred to in the preceding paragraph for the matters concerning the private common areas of the building set forth in item (ii) of the preceding paragraph that do not affect the interests of all of the unit owners.