(b) A private, nonprofit, charitable corporation, incorporated in this state, which has been certified as a nonprofit corporation pursuant to the provisions of Section 501(c)(3) of the federal Internal Revenue Code, as amended, which has as its principal purpose the construction of housing or other public facilities and which notifies the Auditor of an intention to bid and subsequently submits a bid that is not more than five percent lower than the highest bid submitted by any person or organization which is not a private, nonprofit, charitable corporation as defined in this subsection, shall be sold the property offered for sale at public auction by the Auditor pursuant to the provisions of this section at the public auction as opposed to the highest bidder. The nonprofit corporation referred to in this subsection does not include a business organized for profit, a labor union, a partisan political organization, or an organization engaged in religious activities, and it does not include any other group which does not have as its principal purpose the construction of housing or public facilities.