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The resulting linear equation (shown in Figure 2) shows the relationship between household size and <br />dwelling unit size for single-family unit. The graphed relationship shows that there is a strong <br />correlation between household size and unit size, and that the larger the unit the more people it is likely <br />to contain. As can be seen in Table 4, a single-family detached unit with less than 1,000 squa <br />an average of 2.78 persons, while a unit with 4,000 square feet averages 3.68 residents. <br />Table 4 <br />SINGLE-FAMILY HOUSEHOLD SIZE BY SQUARE FEET <br />Approximate Average <br />midpoint Household <br />(sq. ft.) Size <br />Dwelling Size Category <br />Less than 1,000 sq. ft.500 2.78 <br />1,000 - 1,999 sq. ft.1,500 3.01 <br />2,000 - 2,999 sq. ft.2,500 3.23 <br />3,000 - 3,999 sq. ft.3,500 3.45 <br />4,000 sq. ft. or more4,500 3.68 <br />Source: Average household size is derived by substituting the midpoint <br />solving for y in the equation described in the preceding text. <br />If the calculated fees are based on dwelling unit size , it is recommended that the fees be based on square <br />footage rather than number of bedrooms. This cost per square foot approa ch will not only avoid any <br />type of confusion that might arise when trying to establish how many rooms a new unit might have, it <br />also avoids sharp jumps in the fee that will occur at thresholds <br />H C \I N A ÐG A M January 5, 2006, Page 5 <br />AWAI I OUNTY NFRASTRUCTURE EEDS SSESSMENT ROWTH NALYSIS EMORANDUM <br /> <br />