§ 91.06 DENSITY FORMULA.

   (A)   The Table of Estimated Ultimate Population, as amended by the State School Consulting Service, is generally indicative of current and short range projected trends in family size for new construction and shall be used in calculating the amount of required dedication of acres of land or the cash contributions in lieu thereof, unless a written objection is filed by the subdivider or developer.

   (B)   In the event a subdivider or developer files a written objection to the Table of Estimated Ultimate Population, he or she shall submit his or her own demographic study showing the estimated additional population to be generated from the subdivision or development.

      (1)   In that event, final determination of the density formula to be used in the calculations shall be made by the Zoning, Subdivision and Planning Committee of the County Board based upon the demographic information submitted by the subdivider or developer and from other sources which may be submitted to the Committee by park districts or others.

      (2)   It is recognized that population density, age distribution and local conditions change over the years, and the specific formula for the dedication of land, or the payment of fees in lieu thereof is subject to periodic review and amendment if necessary.

Table II: Table of Estimated Ultimate Population per Dwelling Unit Children per Unit
Type of Unit	Pre-School 0-4 Years	Elementary Grades K-5 5-10 Years	Junior High Grades 6-8 11-13 Years	Total Grades K-8 5-13 Years	High School Grades 9-12 14-17 Years	Adults 18 Years +	Total Per Dwelling Unit
Detached Single-Family
2 Bedroom	0.113	0.136	0.048	0.184	0.020	1.700	2.017
3 Bedroom	0.292	0.369	0.173	0.542	0.184	1.881	2.889
4 Bedroom	0.418	0.530	0.298	0.828	0.360	2.158	3.764
5 Bedroom	0.283	0.345	0.248	0.593	0.300	2.594	3.770
Attached Single-Family
1 Bedroom	0.000	0.000	0.000	0.000	0.000	1.193	1.193
2 Bedroom	0.064	0.088	0.048	0.136	0.038	1.752	1.990
3 Bedroom	0.212	0.234	0.058	0.292	0.059	1.829	2.392
4 Bedroom	0.323	0.322	0.154	0.476	0.173	2.173	3.145
Apartments
Efficiency	0.000	0.000	0.000	0.000	0.000	1.294	1.294
1 Bedroom	0.000	0.002	0.001	0.003	0.001	1.754	1.758
2 Bedroom	0.047	0.086	0.042	0.128	0.046	1.693	1.914
3 Bedroom	0.052	0.234	0.123	0.357	0.118	2.526	3.053
Note:
There are only three significant categories provided in this chart. Because of the similarity of yields of all types of attached single-family dwelling units, only one category is provided. The same is true with apartments; thus, only one category. Because of the relatively short history of some newer types of detached and attached single-family units, individual evaluations may be necessary.

 

(1980 Code, § 91.06) (Res. 79-60, adopted 4-25-1979)