Beyond what is provided for in this Act, the bylaws may provide for matters among the unit owners that concern the management or use of a building or its grounds or attached facilities.
建物又はその敷地若しくは附属施設の管理又は使用に関する区分所有者相互間の事項は、この法律に定めるもののほか、規約で定めることができる。
Matters concerning a private common area that do not affect the interests of all of the unit owners may be provided for in the bylaws of the unit owners who are to have common use of that area, unless these are provided for in the bylaws of all the unit owners.
The bylaws prescribed in the preceding two paragraphs must be established in a manner that ensures equity in the interests among unit owners by comprehensively taking into consideration the shapes, areas, positional relationships, purpose of use, and status of use, as well as the price paid by each unit owner and any other circumstances concerning the exclusively-owned areas, common areas, or grounds or attached facilities of the building (including rights related to the grounds or attached facilities).
In the cases referred to in paragraph (1) and paragraph (2), the bylaws may not prejudice the rights of persons other than unit owners.
The bylaws must be prepared in writing or by means of electronic or magnetic records (meaning a record that is created in an electronic format, a magnetic format, or any other format that cannot be perceived by the human senses, and that is specified by Ministry of Justice Order as being used in computerized information processing; the same applies hereinafter).
規約は、書面又は電磁的記録（電子的方式、磁気的方式その他人の知覚によつては認識することができない方式で作られる記録であつて、電子計算機による情報処理の用に供されるものとして法務省令で定めるものをいう。以下同じ。）により、これを作成しなければならない。