Section 31-411
Dimensional standards
Lot
Density
- Maximum density
- 1 du/acredu/acreDwelling units per acre — the number of homes allowed on each acre of land.
- Minimum density
- 0.5 du/acredu/acreDwelling units per acre — the number of homes allowed on each acre of land.
- Lot area per dwelling unitLot area per dwelling unitLand required for each home — the same limit as du/acre, expressed per unit instead of per acre.
- 217,800 sq ftsq ftSquare feet. An acre is 43,560 sq ft; a typical suburban lot is 7,000–10,000. (5 acacre43,560 square feet — about the size of an American football field without the end zones.)
Height & bulk
Housing
- Two-family
- by_right
- Three-family
- by_right
- Four-plus family
- by_right
Uses
Extracted standards
48 individual requirements pulled out of this section’s prose, each with the sentence it came from.
Design
- Enclosure ratio required
The enclosure ratio for buildings, excluding buildings which face a park or square, shall conform to the following:
- Main entrance orientation
All buildings shall have their main entrance opening to a street, park or square (except outbuildings).
- Minimum percentage of dwelling unitsDwelling unitOne independent home: its own kitchen, bathroom and entrance. with front porches50 pct
Front porches shall be provided on not less than 50 percent of all dwelling units within the House land use allocation.
- PD design standards apply
The PD design standards found in Table 410-2 in Section 31-410 also apply to the TND option use pattern.
Landscaping & trees
- Maximum average street tree spacing30 ft
Street trees shall be planted along all streets at a maximum average spacing of 30 feet on center.
Other
- Exempt from transportation review requirements of Section 31-601
The transportation review requirements of Section 31-601 of this Ordinance shall not apply to any application for a site plan or subdivision plat.
- Adjacent parking lots must have alley connection
Adjacent parking lots shall have vehicular connections from an alley.
- All uses conducted within completely enclosed buildings
All uses shall be conducted within completely enclosed buildings, unless otherwise specified herein.
- Continuous network of alleys required
There shall be a continuous network of alleys to the rear of building lots within the TND except as may be provided herein.
- Arterial street bisection prohibitedProhibitedNot allowed in the district at all, short of rezoning or a variance.
A TND may be located adjacent to, but shall not be bisected by any street designated as an arterial street.
- Corner lots designated more intensive use
Land use for corner lots which front on streets of dissimilar use shall be designated the more intensive use category.
- Cul-de-sacs permitted
Cul-de-sacs are not permitted.
- Curb heightMaximum heightThe tallest a building may be, given in feet, in storeys, or both — whichever binds first. at intersections6 in
A curb, six inches in height, is required at all street intersections.
- Greenbelt conservancy maximum imperviousImpervious coverageThe share of a lot covered by anything water cannot soak through — roofs, drives, patios. surface ratio5 pct
Conservancy Lots with a minimum lot size of five acres and a maximum impervious surface ratio of 5%.
- Greenbelt conservancy lot minimum size5 acresacre43,560 square feet — about the size of an American football field without the end zones.
Conservancy Lots with a minimum lot size of five acres and a maximum impervious surface ratio of 5%.
- All lots must share frontageFrontageThe length of a lot line that touches a public street. line with street, park, or square
All lots shall share a frontage line with a street, park or square.
- Maximum town center area200,000 sqftsq ftSquare feet. An acre is 43,560 sq ft; a typical suburban lot is 7,000–10,000.
The town center shall have a minimum area of 500 square feet per square foot of gross site area (excluding greenbelt areas), and shall not exceed a maximum of 200,000 square feet.
- Maximum department store building area
Town centers may include, in addition to civic, shopfront, workshop and rowhouse uses, up to one grocery and/or one department store, each not exceeding the following in square feet of building area:
- Maximum grocery store building area
Town centers may include, in addition to civic, shopfront, workshop and rowhouse uses, up to one grocery and/or one department store, each not exceeding the following in square feet of building area:
- Maximum jobs to housing ratio1 ratio
Minimum 0.5:1.0 to 1.0:1.0.
- Maximum extension along collector street600 ft
The town center may extend up to 600 feet along a collector street from the centerline of the intersection.
- Maximum neighborhood area40 acresacre43,560 square feet — about the size of an American football field without the end zones.
The minimum areas for a Neighborhood shall be 10 acres and the maximum area shall be 40 acres.
- Maximum radius from other shopfront uses on mandatory square600 ft
The Town Center shopfront uses shall be located no further than a six-hundred-foot radius from other shopfront uses located on the mandatory square.
- Maximum percentage of shopfront use lots transferable to Town Center50 pct
A maximum of 50 percent of the shopfront use lots may be transferred to the Town Center.
- Maximum TND area700 acresacre43,560 square feet — about the size of an American football field without the end zones.
The minimum area of a TND shall be 40 acres, and the maximum area shall be 700 acres.
- Maximum number of town centers1 count
There shall be no more than one Town Center in a TND.
- Minimum percentage of town center plaza with architectural/water features10 pct
At least ten percent (10%) of the town center plaza shall be developed with permanent architectural and/or water features as a focal point for the town center.
- Minimum town center area per gross site area500 sqftsq ftSquare feet. An acre is 43,560 sq ft; a typical suburban lot is 7,000–10,000.
The town center shall have a minimum area of 500 square feet per square foot of gross site area (excluding greenbelt areas), and shall not exceed a maximum of 200,000 square feet.
- Minimum common open spaceOpen spaceLand a development must leave unbuilt, sometimes required to be usable or planted.
Not less than the percentage of the site as set forth in the Parks and Open Space Standards, Table 607-1, shall be reserved as common open space.
- Minimum jobs to housing ratio0.5 ratio
Minimum 0.5:1.0 to 1.0:1.0.
- Minimum neighborhood area10 acresacre43,560 square feet — about the size of an American football field without the end zones.
The minimum areas for a Neighborhood shall be 10 acres and the maximum area shall be 40 acres.
- Minimum residential percentage of gross leasable area fronting plaza35 pct
A minimum of 35 percent of the gross leasable building area of the lots fronting the plaza shall be for residential use.
- Minimum TND area40 acresacre43,560 square feet — about the size of an American football field without the end zones.
The minimum area of a TND shall be 40 acres, and the maximum area shall be 700 acres.
- Parcels over 100 acresacre43,560 square feet — about the size of an American football field without the end zones. must be multiple neighborhoods100 acresacre43,560 square feet — about the size of an American football field without the end zones.
Parcels exceeding 100 acres shall be developed as multiple neighborhoods, each individually subject to the minimum and maximum requirements of this Subsection.
- Similar land uses must face across streets
Similar land use categories shall face across streets.
- Required street types
The following street types are required: Local streets (Urban), Boulevards, and Main streets.
- Streetwall required on frontageFrontageThe length of a lot line that touches a public street. line
Streetwalls shall be built on the frontage line.
- Village Green or Square maximum land area120,000 sqftsq ftSquare feet. An acre is 43,560 sq ft; a typical suburban lot is 7,000–10,000.
The Village Green or Square shall have a Minimum Land Area of 30,000 square feet and a Maximum Land Area of 120,000 square feet.
- Village Green or Square maximum distance from center of development300 ft
The Village Green or Square shall be located within 300 feet of the center of the proposed development.
- Village Green or Square maximum length to width ratio6 ratio
The Village Green or Squares shall have a length to width ratio not exceeding six to one (6:1).
- Village Green or Square minimum adjoining streets3 count
The Village Green or Square shall adjoin streets on at least three sides.
- Village Green or Square minimum land area30,000 sqftsq ftSquare feet. An acre is 43,560 sq ft; a typical suburban lot is 7,000–10,000.
The Village Green or Square shall have a Minimum Land Area of 30,000 square feet and a Maximum Land Area of 120,000 square feet.
- Minimum percentage of Hamlet lots within five-minute walk90 pct
Not less than 90 percent of the Hamlet lots shall be located within a five minute walk (1,320 feet) from the perimeter of the Village Green or Square.
- Village Green or Square minimum width (RC, RU)30 ft
Zoning districts RC, RU: 30 feet.
- Village Green or Square minimum width (RL, RLM, RM)50 ft
Zoning districts RL, RLM, RM: 50 feet.
- Village Green or Square minimum width (RR, RE)100 ft
Zoning districts RR, RE: 100 feet.
Parking
- Parking lot location
Parking lots shall be located at the rear or at the side of buildings.
- Parking lot prohibitedProhibitedNot allowed in the district at all, short of rezoning or a variance. locations
Parking lots and parking garages shall not: (1) abut street intersections or civic use lots; (2) be adjacent to squares or parks; or (3) occupy lots which terminate a street vista.
From the ordinance
A TND may be established by rezoning to a TND district pursuant to Section 31-304, or by approval of a Conditional Use Permit or a site plan for a TND where permitted as a conditional use in Section 31-406 of this Ordinance.