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Chapter 4 Generally Applicable Development Standards Part 5 Alternative Development Incentives Page 2 of 2

4.5.4 Review Procedure

Any proposal for a major subdivision meeting the criteria established in this section shall be granted a reduction in minimum lot size and setback requirements as established in the applicable form district; maximum gross density shall not exceed the limits established in Table 4.5.2. The review procedure shall be in accordance with Chapter 7 (Subdivision Regulations).

4.5.5 Maximum Gross Density

Proposed subdivisions shall receive points based on the criteria set forth in Table 4.5.1. Points shall be totaled to calculate the maximum gross density as set forth in Table 4.5.2. Sites that qualify for less than 3 points are not entitled to any alternative development incentive. Gross density shall be interpolated for sites that qualify for 3.5 through 14.5 points.

4.5.6 Compatibility with Adjacent Residential Development

Reduced size lots authorized by this section shall be designed and located so that impacts on adjacent previously approved residential development are minimized. To achieve this purpose, proposed subdivisions with reduced size lots shall meet each of the following design standards applicable to a given site.

  1. Proposed subdivisions with reduced size lots that are directly across a public right-of-way or private access easement from a recorded subdivision or single family residential structures having an average front or street side yard with a variation in depth of not more than 10 feet shall meet the following standard: Building limit lines shall be recorded for those parcels across the street/access easement from existing development that equal the average dimensions of established front and street side yards of the existing development.
  2. Perimeter parcels of the proposed development that are adjacent to property zoned for residential use shall comply with one of the following:
    1. The perimeter parcels shall be developed with detached single family homes meeting the minimum lot size and dimensional requirements of the underlying zoning/form district; or
    2. The applicant submits a written consent on an approved form supplied by Planning and Design Services signed by each adjacent property owner agreeing to an alternative standard, said form shall be signed after the neighborhood meeting required by Section 7.2.10 is held; or
    3. The adjacent property is developed with an intensity greater than or equal to the perimeter parcels; or
    4. A buffer area shall be provided on the perimeter parcel consisting of one of the following:
      1. A 75 foot wide open space lot; or
      2. A 40 foot wide open space lot planted with 2 staggered rows of trees, a mixture of 2/3 canopy trees and 1/3 evergreen trees, with trees in each row placed no more than 20 feet apart, or other planting plan using the same quantity and type of trees and approved by DPDS staff; or
      3. A 50 foot wide area containing an existing woodland or tree stand, designated as a Woodland Protection Area.

        In conjunction with b. and c. above, a minimum 20 foot building limit setback shall be provided on the adjacent buildable residential lots.

4.5.7 Wastewater Treatment Requirement

Any lots approved pursuant to this section that are less than five acres shall be developed only if served by a wastewater treatment facility approved by the Health Department or other agency having approval authority.

4.5.8 Housing Types/Minimum Lot Size and Dimensional Requirements

Housing types and minimum yards for dwellings constructed are defined in the applicable form district regulation (see Section 5.2.2 D (Traditional Neighborhood) or Section 5.3.1 D (Neighborhood)).

4.5.9 Required Outdoor Recreation Open Space

Developments containing detached and semi-detached units on lots less than 6000 sq. ft. in the R-4 District or lots less than 4000 sq. ft. in the R-5 District shall provide Outdoor Recreation Open Space within the development. The amount of Outdoor Recreation Open Space required by this section shall be calculated as follows:

R-4: 1500 sq. ft. for each lot less than 6000 sq. ft.
R-5: 1000 sq. ft. for each lot less than 4000 sq. ft.

TABLE 4.5.1—COMMUNITY BENEFITS

Chapter 1 BENEFIT POINTS PO
Open Space: Neighborhood Form*
Minimum of 20% of land set aside for common or public open space, or 1.5
Minimum of 30% of land set aside for common or public open space, or 2.5
Minimum of 40% of land set aside for common or public open space, or 3
Minimum of 50% of land set aside for common or public open space, or 3.5
Open Space— Traditional Neighborhood Form*
Minimum of 5% of land set aside for common or public open space, or 1
Minimum of 10% of land set aside for common or public open space, or 1.5
Minimum of 20% of land set aside for common or public open space 2.5
Diversity Housing Level 1 and 2
At least 10% but less than 15% of units are Level 1 or 2, or 3
At least 15% but less than 20% of units are Level 1 or 2, or 4.5
20% to 50% of units are Level 1 or 2, or 5.5
Over 50% of units are Level 1 or 2 3.5
Additional credit if at least 50% of these diversity units restricted
to the Level 1 diversity housing price range [1]		 **
Additional credit if 30% to 50% of Level 1 or 2 units are developed
as detached single family units, or		 2
Additional credit if over 50% of Level 1 or 2 units are developed
as detached single family units		 3
Chapter 2 Diversity Housing Level 3 and 4
Chapter 3 At least 10% but less than 20% of units are Level 3 or 4 units, or 2
20% to 50% of units are Level 3 or 4 units, or 2.5
Over 50% of units are Level 3 or 4 units 2
Additional credit if at least 50% of these diversity units are restricted to
the Level 3 diversity housing price range 		1
Qualified Neighborhoods
Development is in a Qualified Neighborhood A and at Level 3 housing
price or higher		 3.5
Development is in Qualified Neighborhood B and qualifies for points for
providing Level 1 or 2 housing, or		 2
Development is in Qualified Neighborhood B and qualifies for points for
providing Level 3 or 4 housing		 1
Protection of Cultural Resources
Chapter 4 Preservation of Historic Resource 2
Preservation of significant additional property surrounding a Cultural
Resource that enhances its cultural value, as determined by the Historic
Landmarks and Preservation District Commission		 2
Efficient Land Use
Near major transit corridor 2.5
Brownfield site 6

*Land dedicated for future roadway accommodation, in combination with open space land or solely for right-of-way, qualifies for incentive points as listed here for open space.
** 50% of above listed, Diversity Housing Points as additional credit.

For purposes of illustration, the Jefferson County income limits and housing price limits for 2004 are as follow:

  1 Bedroom 2 Bedrooms 3 Bedrooms 4 Bedrooms
Low-moderate Income (80% of Median) $37,250 $41.99 $46,550 $50,300
Level 1 House Price $93,130 $104,750 $116,380 $125,750
Level 2 House Price $102,440 $115,230 $128,010 $138,330
Level 3 House Price $111,750 $125,700 $139,650 $150,900
Level 4 House Price $121,060 $136,180 $151,290 $163,480
Note: Low-moderate income levels for the Louisville MSA are updated annually. This information is available from the US Department of Housing and Urban Development website. Refer to Section 8 income limits as posted at http://www.huduser.org/datasets/il.html

Table 4.5.2 Maximum Permitted Gross Density*

Zoning District 3 pt 4 pts 5 pts 6 pts 7 pts 8 pts 9 pts 10 pts 11 pts 12 pts 13 pts 14 pts 15 pts
R-4 3.3 3.4 3.5 3.6 3.7 3.8 3.9 4 4.1 4.2 4.4* 4.6 4.84
R-5 4.4 4.6 4.8 5 5.2 5.4 5.6 5.8 6 6.2 6.5* 6.8 7.26

* Portions of proposed developments located more than one mile from a major transit corridor or an existing major or minor arterial classification roadway shall not be eligible for maximum gross densities to exceed 4.0 dwelling units per acre in the R-4 zoning district and 5.8 dwelling units per acre in the R-5 zoning district utilizing the Alternative Development Incentives. The maximum permitted density in developments located partially within and partially outside the one mile distance is set forth in Section 4.5.2.