Section 9-441.01 - Public purpose; declaration of housing development area by local governing bodyA. It is a valid public purpose of municipalities to assist in providing for the acquisition, construction or rehabilitation of housing and other facilities necessary or incidental to the housing and primarily for the use of those residing in the housing, in areas that are declared by the municipality to be housing development areas, and public monies may be spent for these purposes in these areas.B. Before exercising any of the powers conferred on municipalities by this article, the local governing body shall adopt a resolution finding that a shortage of housing exists in a certain area of the municipality, that the area is declared to be a housing development area and that assisting in the development of housing in the area is in the interests of the public health, safety, morals or welfare of the residents of the municipality. The resolution shall also establish the boundaries of the housing development area, provided that the local governing body may not approve a housing development plan if doing so would result in more than twenty per cent of the geographical area of the municipality being included in housing development areas.