N.Y. County Law § 278

§ 278. Definitions. For purposes of this article the following\ndefinitions shall apply:\n 1. the term "board of supervisors" shall be deemed to mean "county\nlegislature" in those counties having county legislatures;\n 2. the term "typical property" shall mean a benefited property having\nan assessed value that approximates the assessed value of the mode of\nthe benefited properties situated in the district or extension that will\nbe required to finance the cost of the proposed improvements;\n 3. the term "typical one or two family home" shall mean a benefited\nproperty improved by a one or two family dwelling and having an assessed\nvalue that approximates the assessed value of the mode of the benefited\nproperties improved by one or two family dwellings situated in the\ndistrict or extension that will be required to finance the cost of the\nproposed improvement;\n 4. the terms "cost of the district or extension to the typical\nproperty" and "cost of the district or extension to the typical one or\ntwo family home" shall mean the amount that it is estimated that the\nowner of such a typical property or home within the district or\nextension will be required to pay for debt service, operation and\nmaintenance and other charges, such as user charges, related to the\nimprovements in the first year following formation of the district or\nextension or, if greater, in the first year in which both principal and\ninterest on any indebtedness and operation and maintenance costs will be\npaid;\n 5. the term "mode" shall mean, in connection with assessed value of\nproperty, the most frequently occurring assessed value as shown on the\nlatest completed final assessment roll.\n