[Zoning Order Art. 7, Div. IV, 4-2-2008]
Both the mixed use and mixed use addition development patterns in the Official Master Plan shall be implemented by the following design standards. They shall apply to the following zoning districts: "PR-2" Planned Mixed Residential District and "PM" Planned Mixed Use District.
[Zoning Order §7.080, 4-2-2008]
A. 
Residential Uses.
1. 
Encourage developments with mixtures of densities, lot sizes and housing types.
2. 
Foster neighborhood security with means for maintaining activity at all times of the day.
3. 
Encourage linking neighborhoods with safe, attractive pedestrian connections both along the street and on open space greenways.
4. 
Connect residences to each other and to neighborhood parks, schools, public facilities and shops with direct pedestrian pathways.
5. 
Encourage interconnectivity among neighborhoods to distribute traffic evenly and avoid excessive traffic on any one street and limit traffic cutting-through from one neighborhood to another or from one County-maintained road to another.
6. 
Minimize cut-through traffic within a neighborhood by providing a safe access configuration for internal and external traffic movement and design streets with appropriate speeds based upon the intended use, allowing for narrower widths and other traffic calming measures.
7. 
Encourage parks and community facilities.
B. 
Non-Residential Uses.
1. 
Provide a focal point for neighborhoods surrounding office and commercial development.
2. 
Allow a mixture of non-residential and residential uses to occur in a compact, pedestrian friendly manner.
3. 
Allow vehicular access to the varied activities that occur in the mixed use development pattern, but never at the expense of pedestrian safety.
4. 
Encourage buildings with diverse and interesting architectural styles that allow mixed use developments to attain a unique identity in the County.
5. 
Prescribe compact development patterns that preserve rural qualities of outlying areas.
[Zoning Order §7.090, 4-2-2008]
A. 
Residential uses implementing the mixed use and mixed use addition development patterns in the Official Master Plan shall meet the following design standards.
1. 
Street design.
a. 
Residential streets should be laid out so that any single block face does not exceed one thousand five hundred (1,500) feet in length. Streets may exceed these dimensions in the case of topographical constraints or natural features that are worthy of preservation. Mid-block pedestrian connections should be encouraged where they will provide safer, more efficient pedestrian access than conventional sidewalks along streets. These mid-block pedestrian crossings shall be installed with proper signage and/or signalization in order to alert vehicular traffic of the crossing. These dimensions shall provide a dedicated mid-block pedestrian connection through the block; each such block segment shall not exceed eight hundred (800) feet. Street layouts should provide right-of-way connections to the edge of the development to adjacent sites, so that street patterns can be extended to future development, where topography allows and future anticipated land uses would benefit.
b. 
Paved sidewalks shall be provided in mixed use developments where connectivity to commercial uses from residential uses is necessary based upon an evaluation of:
(1) 
Functional classification of the road.
(2) 
Rural versus urban character.
(3) 
Zoning category.
A continuous paved sidewalk shall be provided a minimum of four (4) feet in width.
2. 
Lot access, circulation and parking.
a. 
Vehicular access may be by a rear or side alley. Alley-facing garages shall be set back at least four (4) feet from the rear right-of-way or easement line. Where the property line extends to the centerline of the alley, the garage shall be set back ten (10) feet from the centerline.
b. 
Exterior off-street surface parking may be located behind the principal structure.
c. 
Driveways should be set back at least one (1) foot from the side lot line, except that shared driveways may be allowed through an easement designated on a plat.
3. 
Relationship to adjacent property.
a. 
The majority of residences are encouraged to be within one-half (½) mile of an existing or planned non-residential center of the mixed use development.
b. 
Lower-density residential patterns should be located on edges that transition to rural areas or to other mixed use developments.
c. 
Higher-density residential areas with eight (8) or more dwelling units per acre should be located within one thousand two hundred (1,200) feet of the non-residential center of the mixed use development, civic uses such as schools or common open space. Areas with less than eight (8) dwelling units per acre should be at least one thousand two hundred (1,200) feet from the non-residential center.
[Zoning Order §7.100, 4-2-2008]
A. 
Residential and non-residential uses implementing the mixed use and mixed use addition development patterns in the Official Master Plan shall meet the following design standards.
1. 
Street design.
a. 
Non-residential streets shall be laid out so that any single block face does not exceed six hundred (600) feet in length. Streets may exceed these dimensions in the case of topographical constraints or natural features that are worthy of preservation. These dimensions shall provide a dedicated mid-block pedestrian connection through the block.
b. 
Cul-de-sacs or dead-end streets should not be used for non-residential streets. However streets that terminate with cross streets (t-intersections) are encouraged when used in conjunction with the location of significant buildings or architectural elements at the termination of the street.
c. 
Sidewalks shall be required and should be located near the street edge. Tree wells or landscape wells are encouraged along the street edge every seventy-five (75) feet on center. Location of sidewalks should reflect tree locations.
d. 
On-street parking is encouraged to provide a buffer for pedestrians, calm traffic and reduce vehicle speeds and to reduce the need for dedicated off-street parking lots.
e. 
Street layouts should provide right-of-way connections to the edge of the development to adjacent sites, so that street patterns can be extended to future development, where topography allows and future anticipated land uses would benefit.
2. 
Lot access, circulation and parking.
a. 
Sidewalks adjoining the front of a building facade shall be a minimum of eight (8) feet wide. Sidewalks separated three (3) or more feet from building facades may be as narrow as five (5) feet wide. Sidewalks should be provided along street rights-of-way.
b. 
Vehicle access is encouraged through rear alleys. In cases where rear alleys are not feasible, vehicle access points should be limited to side streets.
c. 
Any off-street parking shall be behind the building or located to the side of the building. Any parking located to the side of the building shall be set back at least ten (10) feet from the right-of-way and screened. A fence or wall screening of a minimum of three (3) feet high shall be constructed between the parking lot and the sidewalk. Landscaping approximately three (3) feet high shall be provided along with the fence or wall screening. The design and character of the combined landscaping and fence, masonry wall or decorative wall screening should be compatible with the architectural design and character of adjacent buildings.
d. 
No more than thirty-five percent (35%) of any single block should be dedicated to off-street parking. However, blocks that are set up for centralized public parking to serve multiple non-residential uses in the mixed use center may occupy up to fifty percent (50%) of a block. Combined landscaping and fence, masonry wall or decorative wall screening should be provided for each street frontage of a parking area. Such screening should be compatible with the architectural design and character of surrounding buildings on the fronting street. The screening should be a minimum of three (3) feet high.
3. 
Relationship to adjacent property. Connections shall be maintained between residential and non-residential uses. Transitional areas between residential and non-residential uses should be designed to ensure that the uses are compatible and may include:
a. 
A perimeter masonry wall, landscaping or a combination of a masonry wall and landscaping, though any wall should be between three (3) to four (4) feet high and include gates for pedestrian access in appropriate places;
b. 
Vehicle or pedestrian alleys, access roads, overflow parking, storm drainage facilities or any other low intensity element of the site near transition areas, though any such element should be accompanied by landscaping elements, berms or screening walls that make the transitions to the less intense use appropriate;
c. 
Four-sided architecture (designing all sides of the building with similar architectural details, materials and colors to avoid the appearance of a back side of any building) where rear of structure is visible from a public view; and
d. 
In the case of abutting uses of different intensity, where connections and transitions are not possible or desirable, a buffer may be required. The buffer shall meet the requirements of Article XII designed to provide the maximum visual screen.