70.11(4a)(c)2.a.a. At least 20 percent of the residential units are rented to persons who are very low-income persons or are vacant and are only available to such persons. 70.11(4a)(c)2.b.b. At least 40 percent of the residential units are rented to persons whose income does not exceed 120 percent of the very low-income limit or are vacant and only available to such persons. 70.11(4a)(d)(d) For purposes of this subsection, low-income persons and very low-income persons shall be determined in accordance with the income limits published by the federal department of housing and urban development for low-income and very low-income families under the National Housing Act of 1937. 70.11(4a)(e)(e) For purposes of this subsection, all properties included within the same federal department of housing and urban development contract or within the same federal department of agriculture, rural development, contract are considered to be one low-income housing project. 70.11(4a)(f)(f) Leasing property that is exempt from taxation under this subsection or sub. (4b) as low-income housing does not render it taxable, regardless of how the leasehold income is used. 70.11(4a)(g)1.1. Annually, no later than March 1, each person who owns a low-income housing project shall file with the assessor of the taxation district in which the project is located a statement that specifies which units were occupied on January 1 of that year by persons whose income satisfied the income limit requirements under par. (b), as certified by the property owner to the appropriate federal or state agency, and a copy of the federal department of housing and urban development contract or federal department of agriculture, rural development, contract, if applicable. 70.11(4a)(g)3.3. If the statement required under this paragraph is not received on or before March 1, the taxation district assessor shall send the property owner a notice, by certified mail to the owner’s last-known address of record, stating that failure to file a statement is subject to the penalties under subd. 5. 70.11(4a)(g)4.4. In addition to the statement under subd. 1., the taxation district assessor may require that a property owner submit other information to prove that the person’s property qualifies as low-income housing that is exempt from taxation under this subsection. 70.11(4a)(g)5.5. A person who fails to file a statement within 30 days after notification under subd. 3. shall forfeit $10 for each succeeding day on which the form is not received by the taxation district assessor, but not more than $500. 70.11(4b)(4b) Housing projects financed by Housing and Economic Development Authority. All property of a housing project that satisfies all of the following: 70.11(4b)(a)(a) It is owned by a corporation, organization, or association described in section 501 (c) (3) of the Internal Revenue Code that is exempt from taxation under section 501 (a) of the Internal Revenue Code. 70.11(4b)(c)(c) The Housing and Economic Development Authority holds a first-lien mortgage security interest on it. 70.11(4d)(4d) Benevolent retirement homes for the aged. Property that is owned by a nonprofit entity that is a benevolent association and used as a retirement home for the aged, but not exceeding 30 acres of land necessary for the location and convenience of buildings, while such property is not used for profit, if the fair market value of the individual dwelling unit, as determined by the assessor for the taxation district in which the property is located, is less than 130 percent of the average equalized value under s. 70.57 of improved parcels of residential property located in the county in which the retirement home for the aged is located in the previous year, as determined by the assessor of the taxation district in which the property is located based on the sum of the average per parcel equalized value of residential land and the average per parcel equalized value of residential improvements, as determined by the department of revenue. For purposes of determining the fair market value of an individual dwelling unit under this subsection, the value of any common area is excluded. The common area of a retirement home for the aged is exempt from general property taxes if 50 percent or more of the home’s individual dwelling units are exempt from general property taxes under this subsection. If less than 50 percent of the home’s individual dwelling units are exempt from general property taxes under this subsection, the common area of the retirement home for the aged is subject to general property taxes. Leasing a part of property used as a retirement home for the aged, as described in this subsection, does not render it taxable, regardless of how the leasehold income is used. 70.11(4g)(4g) Real property held for rehabilitation or future construction and later sale to low-income persons. Real property owned by a nonprofit organization if all of the following requirements are fulfilled: 70.11(4g)(a)(a) The nonprofit organization holds the property for the purpose of rehabilitating an existing structure or constructing a new structure on the property for sale to low-income persons for use as a personal residence. 70.11(4g)(b)(b) The nonprofit organization offers low-income persons loans to purchase the property for which no interest is charged. 70.11(4g)(c)(c) The nonprofit organization requires prospective purchasers to participate in the rehabilitation or construction of the property. 70.11(4g)(d)(d) The nonprofit organization acquired the property within 3 years before the assessment date. 70.11(4m)(a)(a) Real property owned and used and personal property used exclusively for the purposes of any hospital of 10 beds or more devoted primarily to the diagnosis, treatment or care of the sick, injured, or disabled, which hospital is owned and operated by a corporation, voluntary association, foundation or trust, except an organization that is organized under s. 185.981 or ch. 611, 613 or 614 and that offers a health maintenance organization as defined in s. 609.01 (2) or a limited service health organization as defined in s. 609.01 (3) or an organization that is issued a certificate of authority under ch. 618 and that offers a health maintenance organization or a limited service health organization, no part of the net earnings of which inures to the benefit of any shareholder, member, director or officer, and which hospital is not operated principally for the benefit of or principally as an adjunct of the private practice of a doctor or group of doctors. This exemption does not apply to property used for commercial purposes, as a health and fitness center or as a doctor’s office. The exemption for residential property shall be limited to dormitories of 12 or more units which house student nurses enrolled in a state accredited school of nursing affiliated with the hospital. 70.11(4m)(b)(b) Real property leased by and used exclusively for the purposes of any hospital that has 10 beds or more, is devoted primarily to the diagnosis, treatment or care of the sick, injured or disabled and is owned and operated by a corporation, voluntary association, foundation or trust, except an organization that is organized under s. 185.981 or ch. 611, 613 or 614 and that offers a health maintenance organization as defined in s. 609.01 (2) or a limited service health organization as defined in s. 609.01 (3) or an organization that is issued a certificate of authority under ch. 618 and that offers a health maintenance organization or a limited service health organization, no part of the net earnings of which inures to the benefit of any shareholder, member, director or officer and is not operated principally for the benefit of or principally as an adjunct to the private practice of a doctor or group of doctors. This exemption applies only to real property leased from a nonprofit organization or nonprofit hospital that is exempt from taxation under this chapter and that uses the income derived from the lease only for maintenance of the leased property or construction debt retirement of the leased property or both. This exemption does not apply to property used for commercial purposes, as a health and fitness center or as a doctor’s office. 70.11(4m)(c)(c) In this subsection, “health and fitness center” means an establishment the primary purpose of which is to provide recreational services or facilities that are purported to assist patrons in physical exercise, in weight control or in figure development, including but not limited to a health and fitness center, studio, salon or club. In this subsection, “health and fitness center” does not include a facility the primary purpose of which is to provide services or facilities that are primarily a part of a course of rehabilitation or therapy prescribed by a physician or physical therapist to treat a physical injury or dysfunction and that are aimed primarily at patients of the hospital or an affiliated entity and not at the general public and that is located within the physical confines of a hospital. 70.11(4n)(4n) Vacant parcel owned by a church or religious association. Any parcel of vacant land owned by a church or religious association that is no more than 0.8 acres and located in a 1st class city, that is less than a quarter mile from the shoreline of Lake Michigan, and that is adjacent or contiguous to a city incorporated in 1951 with a 2018 estimated population exceeding 9,000. 70.11(5)(5) Agricultural fairs. Property owned and used exclusively by any state or county agricultural society, or by any other domestic corporation formed to encourage agricultural and industrial fairs and exhibitions and necessary for fairgrounds or for exhibition and sale of agricultural and dairy property, not exceeding 80 acres. The use of such property for celebrations or as places of amusement shall not render it taxable. 70.11(6)(6) Fire companies. Property of any fire company used exclusively for its purposes.