// CODE SNIPPET
23-142 Open Space and Floor Area Regulations in R1 and R2 Districts With a Letter Suffix and R3 Through R5 Districts
JUMP TO FULL CODE CHAPTER
R1 R2 R3 R4 R5
In R1 and R2 Districts with a letter suffix and R3 through R5 Districts, the maximum lot coverage, minimum open space and maximum floor area ratio shall be as set forth in the following table:
District | Maximum Lot Coverage (in percent) | Minimum Required Open Space (in percent) | Maximum Floor Area Ratio |
R1-2A | 30 | 70 | .50 |
R2A | 30 | 70 | .50 |
R2X | N/A — governed by yard requirements | .85 | |
R3-1 R3-2 | 35 | 65 | .50 |
R3A R3X | N/A — governed by yard requirements | .50 | |
R4 | 45 | 55 | .75 |
R4-1 R4A | N/A — governed by yard requirements | .75 | |
R4B | 55 | 45 | .90 |
R5 | 55 | 45 | 1.25 |
R5A | N/A — governed by yard requirements | 1.10 | |
R5B | 55 | 45 | 1.35 |
R5D | 60* | 40* | 2.00 |
* For corner lots, the maximum lot coverage shall be 80 percent and the minimum required open space shall be 20 percent
In addition, the following rules shall apply:
- In R2X, R3, R4, R4A and R4-1 Districts, except R3, R4A and R4-1 Districts within lower density growth management areas, the floor area ratio in the table in this Section may be increased by up to 20 percent provided that any such increase in floor area is located directly under a sloping roof which rises at least three and one half inches in vertical distance for each foot of horizontal distance and the structural headroom of such floor area is between five and eight feet.
- In R3, R4-1 and R4A Districts in lower density growth management areas, the floor area ratio in the table in this Section may be increased by up to 20 percent provided that any such increase in floor area is located in any portion of a building covered by a sloping roof that rises at least seven inches in vertical distance for each foot of horizontal distance.
- In R3, R4 and R5 Districts, the permitted floor area of a single- or two-family detached or semi-detached residence developed after June 30, 1989, may be increased by up to 300 square feet if at least one enclosed accessory off-street parking space is provided in a garage located, wholly or partly, in the side lot ribbon pursuant to Sections 23-12 (Permitted Obstructions in Open Space), paragraph (e), 23-441 (Location of garages in side yards of corner lots) or 23-442 (Location of garages in side yards of other zoning lots).
- In R1-2A Districts and in R3, R4-1 and R4A Districts within lower density growth management areas, the permitted floor area of a single- or two-family detached or semi-detached residence may be increased by up to 300 square feet for one parking space and up to 500 square feet for two parking spaces provided such spaces are in a garage located, wholly or partly, in the side lot ribbon pursuant to Sections 23-12, paragraph (e), 23-441 or 23-442, except that in R1-2A Districts, such parking spaces need not be located in the side lot ribbon.
- In R2A Districts, the permitted floor area may be increased by up to 300 square feet for a detached garage located in a rear yard, except where a parking space is provided within a building containing residences.
- In R3 Districts, except for zoning lots containing single-, two- or three-family residences, 50 percent of the required open space on a zoning lot, except such open space in a front yard, shall have a minimum dimension of 12 feet and shall not be used for driveways, private streets, open or enclosed accessory off-street parking spaces or open or enclosed accessory off-street loading berths.
- In R4 and R5 Districts, except for zoning lots containing single-, two- or three-family residences, 33 percent of the required open space on a zoning lot, except such open space in a front yard or, in R5D Districts, the open area between the street line and street wall of a building or its prolongation, shall have a minimum dimension of 12 feet and shall not be used for driveways, private streets, open or enclosed accessory off-street parking spaces, or open or enclosed accessory off-street loading berths.
Related Code Sections
D105.1 Fire Districts, General
stories or less in height
and 2,500 square feet (232 m2
) or less in area per story located within Zoning Districts R2 through R-5 may be constructed ...
NYC Building Code 2022 > D Fire Districts > D105 Exceptions to Restrictions in Fire District > D105.1 General
§27-295 Building Limitations, Mixed Districts
required for the fire districts if more than twenty-five per cent of the total floor area of the building is located therein ...
D105.1 Fire Districts, General
Existing one- and two-family dwellings of a type of construction not permitted in the fire district can be extended 25 percent of the floor area existing ...
NYC Building Code 2008 > D Fire Districts > D105 Exceptions to Restrictions in Fire District > D105.1 General
D105.1 Fire Districts, General
Existing one- and two-family dwellings of a type of construction not permitted in the fire district can be extended 25 percent of the floor area existing ...
NYC Building Code 2014 > D Fire Districts > D105 Exceptions to Restrictions in Fire District > D105.1 General
721.4.1.3 Fire-Resistance-Rated Construction, Multiwythe Walls With Airspace
of the assembly (hours).
R1, R2 and Rn
=
The fire endurance of the individual wythes (hours ...
NYC Building Code 2008 > 7 Fire-Resistance-Rated Construction > 721 Calculated Fire Resistance > 721.4 Clay Brick and Tile Masonry > 721.4.1 Masonry Walls > 721.4.1.3 Multiwythe Walls With Airspace