(C) The connectivity ratio for streets (§ 153.1068 of this chapter) does not apply to local streets within a conservation subdivision, except for that portion of the street network that includes the following lot configurations:
(1) Single-family detached and attached homes in traditional neighborhood; and
(2) Traditional neighborhood cluster street.
(A) Lot Form | (B) Definition
|
Attached eyebrow homes | An eyebrow street includes dwellings fronting a street that surrounds a close. The eyebrow street configuration may be used for duplexes or triplexes. The close shall include a landscaped island or a natural area that contains the same planting density as a Type N buffer (see §§ 153.1120 through 153.1130 of this chapter). |
Attached homes with automobile courtyards, park circle or private parking courts | This pattern is similar to the private courtyard scheme in that it provides a turnaround circle with a small park or open space area. The common area for the automobile-courtyard configuration contains parking. |
Attached homes with private parking courts | This configuration involves townhouse groups with up to 8 units in a row. |
Detached “Z” lot homes | Detached “Z” lot homes are aligned along the diagonal axis of the lot, either perpendicular to the street or at an angle. The minimum side setback requirements shall not apply. |
Detached eyebrow homes | As an alternative to the cul-de-sac scheme, this configuration groups homes around a common green area with 2 access points. |
Detached homes with commons | This approach to clustering emphasizes open space by orienting the front doors of houses to a formal common area. The common area may include a greenway, close, playground, green, park or parkway as set forth in § 153.1015 through 153.1023 of this chapter. Cottage homes are small homes built around common, private open space, typically on smaller tracts. Cottage homes must conform to the requirements of § 153.1372 of this chapter. |
Detached homes with shared courtyards | A courtyard is an open area adjacent to, or part of, a group of residential buildings. Courtyards function as gathering places and may incorporate a variety of non-permanent activities, such as vendors and display stands. See §§ 153.1015 through 153.1023 of this chapter for standards applicable to courtyards. |
Detached homes with shared driveways | This pattern permits the grouping of up to 4 homes on a shared driveway. The driveway is limited to 50 feet in length. |
Detached patio homes | A patio home or garden home is a single-family residential structure of 1 or 2 stories, which is constructed in such a manner that one, but not both, of the side exterior walls is constructed along 1 of the side property lines of each lot. The side setback shall be waived on 1 side of the property line. |
Detached wide-shallow lot homes | A wide-shallow lot has a frontage and lot width that exceeds its depth. The rear setback shall be waived for wide-shallow lot configurations. |
Single-family attached and multi-family stacked homes with park square | This configuration involves a combination of single-family dwellings, duplexes, row houses or multi-family dwellings facing a square, green or plaza. |
Single-family attached homes with mid-rise cluster | This configuration includes a mix of townhouses with not more than 1 apartment per block. The apartment frontage shall not exceed 200 feet. |
Single-family detached and attached homes in a traditional block | This option includes a mix of single-family detached dwellings and townhouses or row houses fronting local streets with a connectivity ratio (see § 153.1068 of this chapter) of at least 1.8. Access shall be from a rear alley. |
Single-family detached homes | This is a single-family dwelling that is not attached to any other dwelling by any means and is surrounded by open space or yards. |
Stacked and attached homes with parking courts | Angled stacked and attached homes are multi-family dwellings with at least 2 stories in height and aligned with a horizontal curve or “L” configuration. The dwellings shall contain porches facing a walkway, courtyard with parking or common open space. |
Stacked quadrangle homes | Quadrangles are multi-family dwellings with at least 2 stories arranged in a continuous, rectangular form with an inner courtyard. |
Traditional neighborhood cluster street | This option includes a mix of single-family detached dwellings and townhouses or row houses fronting local streets with a connectivity ratio (see § 153.1068 of this chapter) of at least 1.8. At least 50% of the blocks shall contain an eyebrow street with a close. The close shall include a landscaped island or a natural area that contains the same planting density as a Type N buffer (see §§ 153.1120 through 153.1130 of this chapter). |
NOTES TO TABLE: Adapted from Frederick D. Jarvis, Site Planning and Design for Great Neighborhoods (Washington, DC: Home Builder Press, National Association of Home Builders, 1993). | |
(D) The conservation subdivision shall include a pedestrian circulation system. All sidewalks shall connect to other sidewalks or with trail sidewalks, and trails shall connect to potential areas qualifying as conservation areas on the development parcel, adjoining undeveloped parcels or with existing parks and open space on adjoining developed parcels.
(E) Streets shall not cross wetlands or existing slopes exceeding 15%.
(Ord. 3020, passed 9-10-2013, § 2.2.6)