(A) To pay any increase in cost required to lease or rent for a period of four years, a decent, safe, and sanitary comparable replacement dwelling of standards adequate to accommodate such person in an area similar with regard to economic rents to the area of displacement, but not generally less desirable in regard to public utilities and public and commercial facilities, and reasonably accessible to the displaced person's place of employment, but not to exceed four thousand dollars. The cost of a comparable replacement dwelling shall be determined by analysis of existing available standard dwellings which are functionally equivalent and substantially the same as the dwelling from which the person is displaced, provided it is standard, in accordance with a method approved by the bureau of relocation, unless otherwise provided by federal law;