Laserfiche WebLink
for all residential development over the 2001 to 2012 period was 7.5 <br />dwellings per net acre. 7 <br />Table 7 shows that single-family detached housing (including secondary <br />dwelling units and manufactured homes) averaged a density of 5.4 <br />dwelling units per net acre. Multi -family structures had a density of 10.4 <br />dwelling units per net acre for two to four units, 20.5 units per net acre for <br />single-family attached, and structures with five or more units had a <br />density of 24.4 units per net acre. <br />Table 7. Average development density by structure type, dwelling units per net acre, <br />2001-2012, Eugene UGB <br />Source: LCOG GIS data and City of Eugene Planning Department <br />Note: City staff ground-truthed the density analysis results through review of aerial photos, review of RLID and GeoDart address <br />files and a review of relevant permit data. Staff found that some lots had residential development built prior to 2001, through phased <br />development of multi -family housing (structures with more than two units) in Medium and High Density Plan Designations. Phased <br />development often occurs over a number of years and may include developing multiple types of housing on the same tax lot. <br />Phased development over multiple years on one tax lot does not generally occur in Low Density Residential or with single-family <br />housing. Table 7 accounts for pre-existing development, in order to accurately determine the net density. Based on address and tax <br />lot data. <br />7 The density of 7.5 units per net acre accounts for all development on shown in Table 7. While the <br />density analysis focuses on development that occurred between 2001 and 2012, we would <br />underestimate density on these taxlots if we did not account for pre-existing dwelling units, such <br />as dwellings built in phased development prior to 2001. <br />Page 28 ECONorthwest Part 11 — Eugene Housing Needs Analysis <br />Dwelling Units on Lots with <br />Development Between 2001-2012 <br />Pre-existing <br />All DU Built <br />Structure type <br />DU <br />2001-2012 <br />Total DU <br />Net Acres <br />Du / Net Ac <br />Single -Family Detached <br />1,288 <br />5,058 <br />6,346 <br />1,168 <br />5.4 <br />Single -Family Attached <br />5 <br />684 <br />689 <br />34 <br />20.5 <br />Structure with 2 to 4 units <br />227 <br />576 <br />803 <br />77 <br />10.4 <br />Structure with 5+ units <br />831 <br />1,653 <br />2,484 <br />102 <br />24.4 <br />Total <br />2,351 <br />7,971 <br />10,322 <br />1,380 <br />7.5 <br />Source: LCOG GIS data and City of Eugene Planning Department <br />Note: City staff ground-truthed the density analysis results through review of aerial photos, review of RLID and GeoDart address <br />files and a review of relevant permit data. Staff found that some lots had residential development built prior to 2001, through phased <br />development of multi -family housing (structures with more than two units) in Medium and High Density Plan Designations. Phased <br />development often occurs over a number of years and may include developing multiple types of housing on the same tax lot. <br />Phased development over multiple years on one tax lot does not generally occur in Low Density Residential or with single-family <br />housing. Table 7 accounts for pre-existing development, in order to accurately determine the net density. Based on address and tax <br />lot data. <br />7 The density of 7.5 units per net acre accounts for all development on shown in Table 7. While the <br />density analysis focuses on development that occurred between 2001 and 2012, we would <br />underestimate density on these taxlots if we did not account for pre-existing dwelling units, such <br />as dwellings built in phased development prior to 2001. <br />Page 28 ECONorthwest Part 11 — Eugene Housing Needs Analysis <br />