As used in this part:
(1) "Commission" means the Commission on Housing Affordability created in Section 35A-8-2202.
(2) "Housing affordability" means the ability of a household to occupy a housing unit paying no more than 30% of the household's income for gross housing costs, including utilities.
(3) "Moderate income housing unit" means a housing unit where a household whose income is no more than 80% of the area median income is able to occupy the housing unit paying no more than 30% of the household's income for gross housing costs, including utilities.
(4) "Replacement unit" means a moderate income housing unit that:
(a) is comparable in quality to a permanently vacated or destroyed moderate income housing unit;
(b) meets state and local health and housing codes;
(c) is comparable to the permanently vacated or destroyed moderate income housing unit in number of bedrooms and square footage; and
(d) is located, to the extent practicable, in the same political subdivision as the permanently vacated or destroyed moderate income housing unit.