4.8.3 DESIGN STANDARDS FOR SINGLE-FAMILY DETACHED AND TWO-FAMILY DWELLINGS

A. Applicability. These standards shall be applied in addition to any other applicable standards in this Section 146-4.8 unless otherwise stated. When these standards conflict with any other standards in Section 146-4.8, the stricter shall apply.

1. In a subdivision plat of five to 10 lots, or a phase of development containing five to 10 detached single-family dwelling or two-family dwellings, distinct elevations shall be provided by incorporating at least four of the following:

a. Placement of windows and doors on the front façade of the elevation include at least a two-foot vertical or horizontal variation in size or location.

b. The use of different materials on the front façade elevation.

c. The width of the front façade elevation at its widest point must differ by more than two feet.

d. The locations and proportions of front porches must vary.

e. Variations in the front wall plane.

f. Use of roof dormers.

g. A variation of the building types.

h. Window shapes that are substantially different.

2. In a subdivision plat of 10 to 29 lots, at least two different home model varieties shall be constructed, each with a distinct floor plan and elevations.

3. In a subdivision plat of 30 to 49 lots, at least three different home model varieties shall be constructed, each with a distinct floor plan and elevations.

4. In a subdivision plat of 50 or more lots, at least four different home model varieties shall be constructed, each with a distinct floor plan and elevations.

5. No identical model home elevation shall be repeated directly across the street.

6. Approved paint schemes shall not be repeated more than once every four lots or directly across the street.

7. No model elevation shall be repeated more than once every four lots.

8. At least 30 percent of the model/elevation combinations must have variation in the roof line. Exceptions to accommodate rooftop solar applications will be permitted per Section 146-4.2.4.

C. Durability. All of the net façade area shall have durable siding materials. Manufactured siding shall have at least a 25-year written manufacturer's limited warranty. Sheathing or bracing shall not be used as an exterior wall covering. Durable siding materials include cement fiber, engineered composite wood, masonry, rust resistant architectural metals, stucco, any other material approved by the City as being of similar quality, appearance, and durability, and combination of these listed materials.

1. Except as required by Section 146-4.8.6.B (Applicability and Exceptions) a minimum average of 15 percent of the net façade area of each primary structure shall consist of masonry. The percentage of masonry coverage may vary among any residential design plans or the elevations of any residential design plans submitted; provided, that the minimum average coverage is met with each separate submission.

2. All residential design plans with side or rear elevations adjacent to streets, parks, golf courses, or open space shall distribute architectural features and materials so as to achieve side-specific design for each side that faces such street, park, golf course or open space. In addition, except for any residential design plan with a side elevation adjacent to a street, there shall be a four-foot change in the depth of the front elevation, achieved through a recessed or alternately loaded garage, covered porch, or other architectural feature.

E. Windows. Each elevation shall contain windows.

1. Weighted Point System. This Subsection is implemented through a weighted point system. Residential design plans subject to the requirements of this Section shall be compared against the features listed in this Subsection and shall be assigned points accordingly. All residential design plans shall meet a minimum score of 17 points from Section 146-4.8.3.F.2 (Architectural Features).

2. Architectural Features. Points for architectural features shall be calculated according to Table 4.8-2.

Table 4.8-2 Scoring System for Architectural Features
Feature	Points			Total
Feature	3	2	1	Total
Windows
One full height, two-story bay window (for a one-story residential design plan, one full height bay window)	X
One bay window		X
One or more roof window dormers		X
Two or more clerestory windows or windows with transoms above the main window		X
Window mullion patterns on 75% of windows			X
Front door with one or more sidelights, transom window or double door			X
Ribbon windows with two or more horizontal rows of windows containing at least three windows each			X
Decorative shutters on at least two street facing windows			X
At least two special, decorative window heads or window sills on street facing elevations			X
Four or more square feet of windows in the garage that are not on the door			X
Garage door(s) with windows			X
Roofs
Clay, or concrete tile, cement, or standing seam metal roof	X
16-inch roof overhang on all sides	X
Change in highest roof plane or ridgeline of at least one vertical foot	X
Decorative roofing elements (e.g., copper above a bay window)		X
Dimensional roof shingles with a 30-year warranty (previously no specified warranty length)			X
Architectural Details and Styles
Plan/elevation with 30% or greater masonry	X
Porte-cochere over driveway	X
Garage not visible on front elevation	X
Plan/elevation with 20-29% masonry		X
Functioning or simulated chimney		X
Change in siding style between home and roof gable ends		X
Ranch plan offered		X
Decorative material on at least one gable end facing a street (e.g., decorative vents, lentils, etc.)			X
Provide wide fascia at least four inches (nominal) - materials around doors, windows and porches			X
Porches, Stoops, and Enhancements
Covered porch of at least 50 square feet on the front elevation	X
Wraparound porch, at least six feet deep	X
Second story porch (at least 25 square feet)	X
Public view - landscape enhancements in yards that face streets, parks, golf courses, or open space	X
Porch of at least 50 square feet on the front elevation		X
Walk out back covered patio of at least 50 square feet		X
Porch or balcony railings		X
Eight-inch wide columns, as measured at the base of the column, on front or side porch			X
	TOTAL