If a developer does not prepare and provide a SIUD, the corporation must make sure that a SIUD has been adopted for each class of residential units. If there are 2 or more classes of residential units on the parcel, the corporation must identify the standard insurable unit description that applies to each unit. A corporation can adopt or amend a SIUD through: a special resolution ordinary resolution (if the corporation has not passed a special resolution) or board resolution (if the corporation has not passed a special or ordinary resolution) There are certain disclosure requirements when a corporation adopts or amends the SIUD. For example: SIUD adopted by board resolution: the description must be presented as an agenda item at the next AGM for ratification/amendment by ordinary resolution. SIUD adopted by special resolution or ordinary resolution or amended by ordinary resolution: the corporation must file at land titles office a notice containing the most current standard insurable unit description (applicable to all classes of residential units). The notice to land titles must be submitted for filing in a form acceptable to the Registrar, and must contain: The type of resolution under which the standard insurable unit definition was adopted/amended Certification that the resolution was duly passed The seal of the corporation and Any other information required by the Registrar