Agenda Item 4 - UGB Rulemaking <br />December 3-4, 2015 - LCDC Meeting <br />Page 24 of 56 <br />Section (1) requires cities to use the data available in the American Community Surveys (ACS) <br />prepared by the United States Census to determine their existing mix of different housing types. <br />The ACS classifies residential dwellings in each city by dwelling type, and is the best <br />generalized data that is readily available, in lieu of an individualized inventory conducted by <br />each city. <br />Section (2) correlates the different dwelling types in the ACS with low density, medium density, <br />and high density residential development. For cities with a UGB population less than 2,500, the <br />proposed rule requires only two categories (lower density and higher density) to keep it simple, <br />and because ORS 197.303, which defines various "needed housing" types, does not apply to <br />cities with a population less than 2,500. The department recommends that "mobile homes," <br />identified as a separate building type in the ACS, should be classified as low density dwellings, <br />because (1) many of these homes are placed on individual lots and are thus indistinguishable <br />from other detached single-family dwellings, and (2) the units in manufactured home parks are <br />not distinguished from other mobile homes by the ACS, and also manufactured home parks vary <br />in density between low and medium density ranges. <br />Section (3) requires cities to project a mix of housing types needed for new residential <br />development using Table 1, which is attached to the draft rule. This table allows cities to <br />determine a range of housing-type mixes based upon the city's existing housing mix (determined <br />from the ACS data per sections 1 and 2). The table includes ranges of numbers that allow cities <br />to make some policy choices regarding an appropriate housing mix. <br />The table is constructed using the following principles: <br />• Cities are divided into four categories based on population and density. <br />Cities with UGB populations under 25,000 and with medium or high density housing <br />percentages less than the median percentage for cities in the same population category <br />must project a significant increase in medium or high density housing percentages going <br />forward of at least three percent. <br />• Cities with UGB populations under 25,000 and with medium or high density housing <br />percentages greater than the median percentage for cities in the same population <br />category, but less than the top 25 percent of such cities, would be required to project at <br />least an increase of one percent above their current medium or high density housing <br />percentage going forward. <br />Cities with UGB populations of 25,000 or greater and with medium or high density <br />housing percentages less than the highest percentages among such cities (for medium <br />density housing, Springfield, for high density housing, Eugene and Corvallis), would be <br />required to project at least a one percent increase above their current medium or high <br />density housing percentage going forward. <br />