Table 27-20-1
| ||
---|---|---|
Maximum Non-Single-Family Units
| ||
District
|
Percentage of Non-Single-Family Units
| |
R-1*
|
20%*
| |
R-2/R-2-A
|
30%
| |
R-3
|
50%
|
*A minimum site area of 15 acres shall be required in the R-1
District before non-single-family units can be included.
|
Table 27-20-2
| ||
---|---|---|
Density Factors
| ||
District
|
Density Factor
| |
R-1
|
1.1
| |
R-2/R-2-A
|
1.25
| |
R-3
|
1.5
|
Table 27-20-3
| ||
---|---|---|
Setbacks from Off-Site Features
| ||
Feature
|
Setback
(feet)
| |
External road rights-of-way
|
100
| |
All other site area boundaries
|
50
| |
Cropland or pasture land
|
100
| |
Active recreation areas
|
150
| |
Buildings or barnyards housing livestock
|
300
|
Table 27-20-4
| ||||
---|---|---|---|---|
Constrained Land Calculation
| ||||
Resource
|
Number of Acres
|
Protection Factor
|
Constrained Land (Acres)
| |
1.
|
Land within the rights-of-way for existing utility lines
|
x 1.0
|
=
| |
2.
|
Existing protected open space (such as easements)
|
x 1.0
|
=
| |
3.
|
Wetlands, lakes, ponds and other water bodies
|
x 1.0
|
=
| |
4.
|
Floodway of streams and other watercourses
|
x 1.0
|
=
| |
5.
|
100-year floodplains
|
x 0.5
|
=
| |
6.
|
Steep slopes 15% - 24.99%*
|
x 0.5**
|
=
| |
7.
|
Steep slopes 25% - 40%*
|
x 0.75**
|
=
| |
8.
|
Steep slopes > 40%*
|
x 0.95**
|
=
| |
Constrained land = Sum of 1 through 8
|
NOTES:
| |
---|---|
*
|
Excluding areas of contiguous slopes less than 100 square feet.
|
**
|
These percentages consistent with the steep slope controls of § 27-2111.
|
***
|
If a portion of the site area contains more than one feature
subject to a density factor, that acreage shall be subject to the
most-restrictive density factor.
|
Table 27-20-5
| |||
---|---|---|---|
Adjusted Tract Area Calculation
| |||
Gross Tract Area
|
Constrained Land
|
Adjusted Tract Area (ATA)
| |
—
|
=
|
Table 27-20-6
| |||
---|---|---|---|
Greenway Land Calculation for Very Constrained Site Areas
| |||
Constrained Land (> 65% of Gross
Tract Area)
|
5% x ATA
|
Minimum Greenway Land
| |
+
|
=
|
Table 27-20-7
| |||
---|---|---|---|
Greenway Land Calculation for Less-Constrained Site Areas
| |||
Constrained Land (< 65% of Gross Tract Area)
|
40% x ATA
|
Minimum Greenway Land (but not > 70% Gross Tract Area)*
| |
+
|
=
|
NOTES:
| ||
---|---|---|
*
|
But greenway land shall not exceed a maximum of 70% of the gross
tract area.
|
Table 27-20-8
| ||
---|---|---|
Calculate Maximum Number of Dwelling Units
| ||
1.
|
Take gross tract area
| |
2.
|
Subtract constrained land; if in acres, convert to square feet
| |
3.
|
Multiply result by 0.90 to account for land that must be set
aside for roads and other infrastructure
| |
4.
|
Divide by minimum lot size for conventional single-family dwellings
(R-1 = 20,000; R-2/R-2-A = 16,000, R-3 = 12,000)
| |
5.
|
Multiply result by the corresponding density factor (R-1 = 1.1;
R-2/R-2-A = 1.25; R-3 = 1.5)
| |
6.
|
Round result to next-lowest number
| |
7.
|
Maximum number of dwelling units =
|
Table 27-20-9
[Amended by Ord. No. 716, 11/23/2020]
| ||
---|---|---|
Determine if Maximum
| ||
1.
|
Take gross tract area
| |
2.
|
Subtract minimum greenway land (calculated under Subsection
2008.2A above)
| |
3.
|
Equals buildable area
| |
4.
|
Divide by maximum = dwelling units (calculated under Subsection
2008.2B above)
| |
5.
|
Compare result to minimum lot size for CSD single-family (R-1
= 12,000; R-2/R-2-A = 10,000; R-3 = 8,500)
| |
6.
|
If buildable area cannot accommodate all single-family, determine
if incorporating allowable % of multifamily would work:
|
District
|
Max % Multifamily
|
Minimum Lot Size
(square feet)
| |
---|---|---|---|
R-1
|
20%
|
2-family — 8,000/du
| |
R-2 / R-2-A
|
30%
|
2-family — 6,000/du
| |
R-3
|
50%
|
2-family, triplex, fourplex — 5,000/du
Townhouse — 5,000/du
Garden apartment — 4,000/du
|