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13 <br />from the American Community Survey (ACS) Public Use Microdata Sample (PUMS) for Lane <br />County were used to establish the average household size by number of bedrooms. The Lane <br />Council of Governments then provided the average total finished square feet (SQ FT) by <br />number of bedrooms based on tax lot data from the Lane County Assessor’s Office (2017). <br />Finally, using the variable in common between these two sets (number of bedrooms) a <br />logarithmic regression was used to estimate SQ FT and number of people. <br />The detailed occupants per household estimated by the regression model were used to develop <br />averages occupancy within four SQ FT tiers, as shown in Table E-11. Based on the regression <br />analysis, the persons per household range from 1.25 for tier 1 (8000 SQ FT) to 3.37 for tier 4 <br />(over 3,000 SQ FT). <br />Table E-11 <br />Single-Family Dwelling Unit Occupancy <br />Category <br />Avg. People per <br />Dwelling Unit <br />4-Tier Structure1 <br />800 SQFT or less 1.25 <br />801-1500 SQFT 1.96 <br />1501-3000 SQFT 2.71 <br />>3,000 SQFT 3.37 <br />1Based on 2017 ACS Public Use Microdata Area 00400 PUMS for Lane County <br />and tax lot data from the Lane County Assessor’s Office (2017). <br />1.3.2.2 Multifamily Residential <br />As with single-family residential, U.S. Census data were used to estimate occupancy for <br />multifamily residential dwelling units based on dwelling size, but in the case of multifamily, <br />each tier is based on the number of bedrooms. Table E-12 provides the average people per <br />dwelling unit for each bedroom category. The bedroom data were calculated from the ACS <br />PUMS 2017 Lane County sample. <br />Table E-12 <br />Multifamily Dwelling Unit Occupancy <br />Category <br />Avg. People per <br />Dwelling Unit <br />All Multifamily Dwelling Sizes1 1.76 <br />Number of Bedrooms Category2 <br />0 Bedrooms 1.09 <br />1 Bedrooms 1.20 <br />2 Bedrooms 1.99 <br />3+ Bedrooms 2.51 <br />1 2017 American Community Survey Public Use Microdata Sample (ACS PUMS) for Lane <br />County, weighted average for all multifamily households <br />2 2017 ACS PUMS for Lane County; buildings with >2 apartments. <br />January 21, 2020, Public Hearing – Item 1Page 112