; (B) for which the cost of flood insurance premiums, surcharges, and fees in a year would result in excess costs for the household for that year; and (C) that— (i) renews an existing flood insurance policy under the national flood insurance program for building coverage for a property that is in an area having special flood hazards; or (ii) purchases a flood insurance policy under the national flood insurance program for building coverage for an existing structure that was owned and occupied by the household before the date on which the building was determined to be located in an area having special flood hazards due to a revision of, or an update to, a floodplain area or flood risk zone that is identified, delineated, or established by the Administrator; (3) the term excess costs means— (A) for a household that has a total household income that is greater than 80 percent of the area median income for the area in which the household is located, the amount by which— (i) the sum of— (I) the total amount of premiums, surcharges, and fees paid by a household in a year with respect to a flood insurance policy provided under this title; and (II) the housing expenses incurred by the household in that year; exceeds (ii) 40 percent of the total household income for the household in that year; and (B) for a household that has a total household income that is not greater than 80 percent of the area median income for the area in which the household is located, the amount by which the flood insurance premiums, surcharges, and fees for a flood insurance policy provided under this title in a year for the household exceeds 1 percent of the coverage limit of that flood insurance policy under section 1306(b); and (4) the term housing expenses means, with respect to a household, the total amount that the household spends in a year on— (A) mortgage payments; (B) property taxes