§ 200-182. R-4A District bulk and area regulations.

The following shall be the standards for the R-4A District:

A. 

Tract development.

(1) 

Minimum tract area: five acres.

(2) 

Minimum tract frontage: 100 feet.

(3) 

Open space: Except as otherwise provided herein, not less than the lesser of 25% of the development area, excluding the area of single-family lots, or 20% of the gross development area shall be designed as and devoted to common open space for use primarily by the residents of the planned development. Individual lots or portions thereof shall not be construed as open space. Common open space shall conform to requirements for such open space as contained in § 200-190C of this article.

(4) 

Maximum permissible development density.

(a) 

The average gross density shall not exceed six dwelling units per acre.

(b) 

Net density of particular types of dwelling units shall be in accordance with the schedule below. In calculating permitted net densities as outlined herein, the area of land covered by such uses shall include internal streets, parking areas and all private yards, but not areas designated as common open space or development collector streets.

[1] 

The net density of single-family patio homes and zero lot line dwellings shall not exceed five dwelling units per acre.

[2] 

The net density of two-family and semidetached units shall not exceed eight dwelling units per acre.

[3] 

The net density of townhouses shall not exceed 10 dwelling units per acre.

[4] 

The net density of garden apartments shall not exceed 25 dwelling units per acre.

[5] 

Residential unit type distribution. There shall be a variety of housing unit types within a planned development such that at a minimum, two of the permitted housing types shall be provided. Of the housing types provided, no one type shall exceed 80% of the total market rate dwelling units within the development. This unit type distribution requirement shall not apply to units designated for low- and moderate-income housing.

[6] 

Maximum improvement coverage: 40%.

[7] 

Design. The standards and principles for design set forth in § 200-190A(2)(h)[2] of this article as well as those applicable provisions contained in Part 1, Site Plan Review, Part 2, Subdivision, and Part 3, Subdivision and Site Plan Procedures, of this chapter, shall be used in the design of residential uses permitted in this district.

B. 

Individual lots. Requirements for individual lots shall be as follows:

		Patio/Zero Lot Line	Townhouse	Two-Family Semidetached
Minimum lot area (square feet)		5,000	2,000	3,200
Minimum lot frontage (feet)		50	18	40
Minimum lot width (feet)		50	18	40
Minimum lot depth (feet)		50	--	--
Minimum yards (feet)
	Front	20	20	20
	Rear	10	10	10
	Side	0,10	10	10

NOTES:

Yards abutting arterial streets shall be increased by 30 feet; those abutting collector streets shall be Increased by 10 feet.

Ten feet if a patio dwelling unit; one side 10 feet if zero lot line dwelling.

At end units only.

C. 

Maximum building height. Three stories, but not to exceed 35 feet.

Added 2-25-1985 by Ord. No. 85-1