The bulk regulations of this Chapter apply to any building or other structure on any zoning lot or portion of a zoning lot located in any Manufacturing District. The bulk regulations of this Chapter shall also apply to any portion of a zoning lot in a Manufacturing District that is developed or enlarged with an open use. In addition, the bulk regulations of this Chapter or of specified Sections thereof also apply in other provisions of this Resolution where they are incorporated by cross reference.

Existing buildings or other structures which do not comply with one or more of the applicable bulk regulations are non-complying buildings or other structures and are subject to the regulations set forth in Article V, Chapter 4.

Special regulations applying to large-scale community facility developments are set forth in Article VII, Chapter 8.

Special regulations applying only in Special Purpose Districts are set forth in Article VIII, IX, X, XI, XII, XIII and XIV.

In Manhattan Community Districts 1, 2, 3, 4, 5 and 6, Brooklyn Community Districts 1, 2, 6 and 8, and Queens Community Districts 1 and 2, the conversion of non-residential floor area to residences in buildings erected prior to December 15, 1961, or January 1, 1977, as applicable, shall be subject to the provisions of Article I, Chapter 5 (Residential Conversion within Existing Buildings), unless such conversions meet the requirements for residential developments of Article II (Residence District Regulations).

In M1-1D, M1-2D, M1-3D, M1-4D and M1-5D Districts, the bulk regulations governing M1 Districts shall apply to community facility, commercial and manufacturing uses, and the regulations of Section 43-61 (Bulk Regulations for Residential Uses in M1-1D Through M1-5D Districts) shall apply to residential uses authorized pursuant to Section 42-321 (Residential uses in M1-1D through M1-5D Districts). M1-6D Districts shall be subject to the bulk regulations set forth in Section 43-62.

In the M1-1 District bounded by 95th Avenue, 148th Street, 97th Avenue and 147th Place in Community District 12 in the Borough of Queens, the bulk regulations of an M1 District shall apply to manufacturing, commercial and community facility uses, and the bulk regulations for an R5 District set forth in Article II, Chapter 3, shall apply to residential uses.

Special regulations applying in the waterfront area are set forth in Article VI, Chapter 2.

Special regulations applying in the flood zone are set forth in Article VI, Chapter 4.

M1 M2 M3

In all districts, as indicated, all developments, or enlargements of 20 percent or more in floor area, excluding developments or enlargements in Use Groups IV(B), IX(B) or X, shall provide street trees in accordance with Section 26-41 (Street Tree Planting). In addition, any building where 20 percent or more of the floor area is converted from a manufacturing use to a commercial or community facility use shall provide street trees in accordance with Section 26-41. The street frontage used to calculate the number of required trees may exclude the street frontage occupied by curb cuts serving:

From Use Group VI

Automotive repair and maintenance#

Automotive service stations#

Industrial drycleaning and laundry services

From Use Group IX

All uses listed under Use Group IX(A) and IX(C).

Notwithstanding any other provisions of this Resolution, outdoor table service areas, associated with eating and drinking establishments, meeting all requirements set forth in legislation by the City Council and any subsequent rulemaking by an authorized agency shall be permitted within any required sidewalk widening areas.

Words in italics are defined in Section 12-10 (DEFINITIONS) or, if applicable exclusively to this Section, in this Section.

M1 M2 M3

In all districts, as indicated, for any zoning lot, the maximum floor area ratio shall not exceed the floor area ratio set forth in the following table, except as otherwise provided in the following Sections:

Section 43-121        (Expansion of existing manufacturing buildings)

Section 43-122        (Maximum floor area ratio for community facilities)

Section 43-13        (Floor Area in Manufacturing Districts With an A Suffix)

Section 43-14        (Floor Area Bonus for Public Plazas and Arcades)

Section 43-15        (Existing Public Amenities for which Floor Area Bonuses Have Been Received)

Section 43-16        (Special Provisions for Zoning Lots Divided by District Boundaries)

Section 43-61        (Bulk Regulations for Residential Uses in M1-1D Through M1-5D Districts)

Section 43-62        (Bulk Regulations in M1-6D Districts)

Any given lot area shall be counted only once in determining the floor area ratio.

*   In Community District 1, in the Borough of Queens, in the M1-2 District bounded by a line 100 feet southwesterly of 37th Avenue, a line 100 feet southeasterly of 24th Street, a line 100 feet southwesterly of 39th Avenue, 24th Street, and a line 100 feet northeasterly of 40th Avenue, 23rd Street, 39th Avenue and 24th Street, the maximum floor area ratio shall be increased to 4.0 provided that such additional floor area is limited to referenced commercial and manufacturing uses

For zoning lots containing both community facility use and manufacturing or commercial use, the total floor area used for manufacturing or commercial use shall not exceed the amount permitted in the table in this Section or by the bonus provisions in Sections 43-13 or 43-14.

Notwithstanding any other provisions of this Resolution, the maximum floor area ratio in an M1-6 District shall not exceed 12.0.

M1-6 M1-7A M1-8A M1-9A

1. Public Plazas
   
   In the districts indicated, except for M1-6D Districts, for each square foot of public plaza provided on a zoning lot, in accordance with the provisions of Section 37-70, inclusive, the total floor area permitted on that zoning lot under the provisions of Section 43-12 (Maximum Floor Area Ratio) may be increased by six square feet.
2. Arcades
   
   In the districts indicated, except for M1-6D Districts, for each square foot of arcade provided on a zoning lot, the total floor area permitted on the zoning lot under the provisions of Section 43-12 may be increased by three square feet. However, the provisions of this Section shall not apply to zoning lots that are both within 100 feet of the western street line of Seventh Avenue and between West 28th and West 30th Streets in the Borough of Manhattan.

(a)        Elimination or reduction in size of non-bonused open area on a zoning lot containing a bonused amenity

In all districts, any existing open area for which a floor area bonus has not been utilized that occupies the same zoning lot as an existing publicly accessible open area or other public amenity, open or enclosed, for which a floor area bonus has been utilized, may be reduced in size or eliminated only upon certification of the Chairperson of the City Planning Commission that all bonused amenities comply with the standards under which such floor area bonus was granted.

(b)        Kiosks and open air cafes

Kiosks and open air cafes may be placed within an existing publicly accessible open area for which a floor area bonus has been received, by certification, pursuant to Section 37-73 (Kiosks and Open Air Cafes).

(c)        Nighttime closing of existing publicly accessible open areas

The Commission may, upon application, authorize the closing of an existing publicly accessible open area for which a floor area bonus has been received, during certain nighttime hours pursuant to Section 37-727 (Hours of access).

(d)        Elimination or reduction of existing public amenities

No existing arcade, publicly accessible open area or other public amenity, open or enclosed, for which a floor area bonus has been utilized, shall be eliminated or reduced in size except by special permit, pursuant to Section 74-761 (Elimination or reduction in size of bonused public amenities).

M1 M2 M3

In all districts, as indicated, whenever a zoning lot is divided by a boundary between districts with different maximum floor area ratios, the provisions set forth in Article VII, Chapter 7 shall apply.

M1-5B

In the district indicated, no building containing joint living-work quarters for artists shall be enlarged.

Mezzanines are allowed within individual quarters, in buildings with an existing floor area ratio of 12.0 or less, and only between floors, or between a floor and a roof, existing on January 22, 1998, that are to remain, provided that such mezzanines do not exceed 33 and 1/3 percent of the gross floor area of such individual quarters. Such mezzanines shall not be included as floor area for the purpose of calculating minimum required size of a joint living-work quarters for artists.

In the district indicated no building containing joint living-work quarters for artists shall be subdivided into quarters of less than 1,200 square feet except where no story contains more than one joint living-work quarters for artists unless modified pursuant to Section 43-171.

However, the minimum size requirement may be replaced by the requirements of Section 15-024 for joint living-work quarters for artists:

(a)        for which a determination of residential or joint living-work quarters for artists occupancy on September 1, 1980, has been made pursuant to paragraphs (a)(6) or (c) of Section 42-325 (Use regulations in M1-5B Districts), or Section 74-782 (Residential conversion in C6-1G, C6-2G, C6-2M, C6-4M, M1-5B, M1-5M and M1-6M Districts); or

(b)        that are registered Interim Multiple Dwellings or are found covered by the New York City Loft Board pursuant to Article 7C of the New York State Multiple Dwelling Law; or

(c)        that the Loft Board determines were occupied for residential use or as joint living-work quarters for artists on September 1, 1980.

Joint living-work quarters for artists existing on September 1, 1980, may not be divided subsequently into quarters of less than 1,200 square feet, unless required by the Loft Board for the legalization of Interim Multiple Dwelling Units in the implementation of Article 7C of the New York State Multiple Dwelling Law.

In the districts indicated, two or more buildings which are separated by individual load-bearing walls and contain joint living-work quarters for artists, each of which building conforms to the regulations set forth in Section 42-325 may be combined to produce a lot area covered by buildings in excess of 3,600 square feet.

Words in italics are defined in Section 12-10 or, if applicable exclusively to this Section, in this Section.

In all Manufacturing Districts, the level of a yard or of a rear yard equivalent shall not be higher than curb level. However, this Section shall not be construed to require that natural grade level be disturbed in order to comply with this requirement.

No building or other structure shall be erected above ground level in any required yard or rear yard equivalent except as otherwise provided in Section 43-23 (Permitted Obstructions in Required Yards or Rear Yard Equivalents).

In all Manufacturing Districts, the obstructions set forth in Section 23-441 (General permitted obstructions), as well as the following obstructions shall be permitted within a required yard or rear yard equivalent:

(a)        In any yard or rear yard equivalent:

(1)        Fences;

(2)        Parking spaces for automobiles or bicycles, off-street, open, accessory;

(3)       Energy infrastructure equipment and accessory mechanical equipment, provided that the height of all equipment shall not exceed a height of 23 feet above curb level;

(4)        Steps;

(5)        Walls, not exceeding eight feet in height and not roofed or part of a building.

(b)        In any rear yard or rear yard equivalent:

(1)        Any building or portion of a building used for any permitted use, except that any portion of a building containing rooms used for living or sleeping purposes (other than a room in a hospital used for the care and treatment of patients, or joint living-work quarters for artists) shall not be a permitted obstruction, and provided that the height of such building shall not exceed one story, excluding basement, nor in any event 23 feet above curb level. However, in M Districts with an A suffix, the height of such obstruction shall be modified so that such building shall not exceed two stories, excluding basements, nor in any event 30 feet above curb level. In addition, in all districts, decks, parapet walls, roof thickness, skylights, vegetated roofs, and weirs, shall be permitted upon such building, or portion thereof, pursuant to Section 43-42 (Permitted Obstructions);

(2)        Parking spaces for automobiles or bicycles, off-street, accessory, provided that the height of an accessory building used for such purposes and located in a required rear yard or rear yard equivalent shall not exceed 23 feet above curb level; or

(3)        Solar energy systems affixed to solar canopies and located over parking spaces associated with public parking lots, automobile rental establishments, or commercial or public utility vehicle parking facilities, as permitted, provided that the height shall not exceed 15 feet above the level of the adjoining grade.

However, no portion of a rear yard equivalent which is also a required front yard or required side yard may contain any obstructions not permitted in such front yard or side yard.

In all Manufacturing Districts, the width or depth of a yard or rear yard equivalent shall be measured perpendicular to lot lines.

M1 M2 M3

In all districts, as indicated, no side yards are required. However, if an open area extending along a side lot line is provided, it shall be at least eight feet wide.

M1 M2 M3

In all districts, as indicated, a rear yard with a depth of not less than 20 feet shall be provided at every rear lot line on any zoning lot except as otherwise provided in Sections 43-27 (Special Provisions for Shallow Interior Lots), 43-28 (Special Provisions for Through Lots) or 43-31 (Other Special Provisions for Rear Yards). Rear yards shall also be provided along portions of side lot lines as set forth in Section 43-261 (Beyond one hundred feet of a street line).

M1 M2 M3

1. For districts without an A suffix
   
   In all districts, other than districts with an A suffix, if an interior lot:
   1. was owned separately and individually from all other adjoining tracts of land, both on December 15, 1961, and on the date of application for a building permit; and
   2. is less than 70 feet deep;

the depth of a required rear yard for such interior lot may be reduced by one foot for each two feet by which the maximum depth of a zoning lot is less than 70 feet. No rear yard is required on any interior lot with a maximum depth of less than 50 feet.

1. For districts with an A suffix
   
   For districts with an A suffix, if an interior lot, or portion thereof, has a depth of less than 95 feet at any point, and such shallow condition was in existence on December 15, 1961, the depth of a required rear yard, or portion thereof, may be reduced by six inches for each foot by which the depth of such zoning lot is less than 95 feet. No rear yard is required on any such interior lot, or portion thereof, with a maximum depth of less than 50 feet.

M1 M2 M3

1. In all districts, other than districts with an A suffix, no rear yard regulations shall apply on any through lot which extends less than 110 feet in maximum lot depth from street to street. However, on any through lot 110 feet or more in maximum depth from street to street, one of the following rear yard equivalents shall be provided, except that in the case of a zoning lot occupying an entire block, no rear yard or rear yard equivalent shall be required:
   1. an open area with a minimum lot depth of 40 feet midway (or within five feet of being midway) between the two street lines upon which such through lot fronts;
   2. two open areas, each adjoining and extending along the full length of the street line, and each with a minimum depth of 20 feet measured from such street line; or
   3. an open area adjoining and extending along the full length of each side lot line, with a minimum width of 20 feet measured from each such side lot line.

Any such rear yard equivalent shall be unobstructed from its lowest level to the sky, except as provided in Section 43-23 (Permitted Obstructions in Required Yards or Rear Yard Equivalents).

1. For districts with an A suffix
   
   For districts with an A suffix, no rear yard equivalent shall be required on any through lot or through lot portion of a zoning lot.

M1 M2 M3

In all districts, as indicated, along such portion of a rear lot line which coincides with a boundary of a railroad right-of-way, no rear yard shall be required.

M1 M2 M3

In all districts, as indicated, along such portion of the boundary of a Manufacturing District which coincides with a side lot line of a zoning lot in an R1, R2, R3, R4 or R5 District, an open area not higher than curb level and at least 15 feet wide shall be provided within the Manufacturing District. Such an open area shall not be used for accessory off-street parking, accessory off-street loading, or for storage or processing of any kind.

M1 M2 M3

1. For districts without an A suffix
   
   In all districts, other than districts with an A suffix, along such portion of the rear lot line of a zoning lot in a Manufacturing District which coincides with a rear lot line of a zoning lot in an adjoining Residence District, an open area not higher than curb level and at least 30 feet in depth shall be provided within the Manufacturing District. Such an open area shall not be used for storage or processing of any kind.
2. For districts with an A suffix
   
   For districts with an A suffix, where the portion of a rear lot line of a zoning lot coincides with the rear lot line of an adjoining Residence District, an open area not higher than 30 feet above curb level and at least 20 feet in depth shall be provided.

M1 M2 M3

1. For districts without an A suffix
   
   In all districts, other than districts with an A suffix, along such portion of a side lot line of a zoning lot in a Manufacturing District which coincides with a rear lot line of a zoning lot in an adjoining Residence District, an open area not higher than curb level and at least 15 feet wide shall be provided within the Manufacturing District. Such open area shall not be used for accessory off-street loading or for storage or processing of any kind.
2. For districts with an A suffix
   
   For districts with an A suffix, where the portion of a side lot line of a zoning lot coincides with the rear lot line of an adjoining Residence District, an open area not higher than curb level and at least eight feet in depth shall be provided. 

M1-1 M1-2 M1-3 M1-4 M2 M3

In the districts indicated, if the boundary of an adjoining Residence District is located at the center line of a street less than 60 feet wide, a front yard not higher than curb level and at least 20 feet in depth shall be provided along any front lot line forming the boundary between a zoning lot located within the Manufacturing District and that portion of the street in which the district boundary is located.

M1 M2 M3

In all districts, as indicated, the rear yard requirements set forth in Section 43-26 (Minimum Required Rear Yards) shall be modified as set forth in this Section.

M1 M2 M3

In all districts, as indicated, whenever a zoning lot is divided by a boundary between districts with different yard regulations, the provisions set forth in Article VII, Chapter 7, shall apply.

M1 M2 M3

In all districts, as indicated, the regulations set forth in Section 43-313 (For zoning lots with multiple rear lot lines) may be modified in accordance with the provisions of Section 73-69 (Rear Yard Modifications).

Words in italics are defined in Section 12-10 (DEFINITIONS) or, if applicable exclusively to this Section, in this Section.

In all Manufacturing Districts, the obstructions set forth in Section 23-621 (General permitted obstructions), as well as the following obstructions shall be permitted to penetrate a maximum height limit or a sky exposure plane set forth in Sections 43-43 (Maximum Height of Front Wall and Required Front Setbacks), 43-44 (Alternate Front Setbacks), 43-46 (Height and Setback Provisions for Districts With an A Suffix) or 43-49 (Limited Height Districts).

1. Elevator or stair bulkheads (including shafts; and vestibules not larger than 60 square feet in area providing access to a roof), roof water tanks, energy infrastructure equipment, and accessory mechanical equipment (including enclosures), other than solar or wind energy systems (whether accessory or as part of energy infrastructure equipment), provided that:
   1. such obstructions shall be located not less than 10 feet from the street wall of a building, except that such obstructions need not be set back more than 25 feet from a narrow street line or more than 20 feet from a wide street line. However, such restrictions on location shall not apply to elevator or stair bulkheads (including shafts or vestibules), provided the aggregate width of street walls of such bulkheads within 10 feet of a street wall, facing each street frontage, does not exceed 30 percent of the street wall width of the building facing such frontage;
   2. the aggregate area of such obstructions, including any required screening, does not exceed 50 percent of the lot coverage of the building;
   3. the height of obstructions within an aggregate area equivalent to at least 20 percent of the lot coverage of the building shall not exceed 15 feet above the maximum permitted height; and
   4. the height of obstructions within the remaining lot coverage, not to exceed 30 percent of the building shall not exceed:
      1. where the maximum permitted height of a building is 120 feet or lower, a height of 35 feet above the maximum permitted height;
      2. where the maximum permitted height of a building is greater than 120 feet, a height of 55 feet above the maximum permitted height; and
   5. all equipment shall be subject to the applicable provisions of Section  37-20 (SPECIAL SCREENING AND ENCLOSURE PROVISIONS);
2. House of worship towers, ornamental, having no floor area in portion of tower penetrating such height limit or sky exposure plane;
3. Qualifying rooftop greenhouses, up to 25 feet in height, provided that such obstruction shall be located not less than six feet from the street wall of the building;
4. Spires or belfries;
5. Wind energy systems, accessory or as part of energy infrastructure equipment, on portions of buildings with a height of 100 feet or greater, provided:
   1. the highest point of the wind turbine assembly does not exceed 55 feet;
   2. no portion of the wind turbine assembly is closer than 10 feet to any lot line; and
   3. in districts where residences or joint living-work quarters for artists are permitted as-of-right, by special permit or by authorization, or within 100 feet of such districts, the diameter of the swept area of the rotor does not exceed 15 feet.

M1 M2 M3

In all districts, other than districts with an A suffix, if the front wall or any other portion of a building or other structure is located at the street line or within the initial setback distance as set forth in the table in this Section, the height of such front wall or other portion of a building or other structure, except as otherwise set forth in this Section, shall not exceed the maximum height above curb level set forth in the table. Above such maximum height and beyond the initial setback distance, the building or other structure shall not penetrate the sky exposure plane set forth in the table.

The regulations of this Section shall apply, except as otherwise provided in Sections 43-42 (Permitted Obstructions), 43-44 (Alternate Front Setbacks) or 43-45 (Tower Regulations). In M1-1 Districts, for community facility buildings, the maximum height of a front wall shall be 35 feet or three stories, whichever is less, and the height above the street line shall be 35 feet, and in M1-4 Districts, for community facility buildings, the maximum height of a front wall shall be 60 feet or six stories, whichever is less.

For zoning lots in M1-6 Districts that are both within 100 feet of the western street line of Seventh Avenue and between West 28th and West 30th Streets in the Borough of Manhattan, the following street wall regulations shall apply to street frontages not occupied by a public plaza. The street wall of a building shall be located on the street line and extend along the entire street frontage of the zoning lot up to a minimum height of 125 feet or the height of the building, whichever is less, and a maximum height of 150 feet. Above a height of 150 feet, no portion of a building may penetrate a sky exposure plane except for towers, pursuant to Section 43-45. The sky exposure plane shall begin at a height of 150 feet above the street line and rise over the zoning lot at a slope of 5.6 feet of vertical distance for each foot of horizontal distance on a wide street, and at a slope of 2.7 feet of vertical distance for each foot of horizontal distance on a narrow street. The provisions of Section 43-44 shall not apply. On the ground floor, recesses shall be permitted where required to provide access to the building, provided such recesses do not exceed three feet in depth as measured from the street line. Above the level of the second story, up to 30 percent of the aggregate width of street walls may be recessed beyond the street line. However, no recesses shall be permitted within 20 feet of an adjacent building and within 30 feet of the intersection of two street lines.

MAXIMUM HEIGHT OF FRONT WALL AND REQUIRED FRONT SETBACKS

SKY EXPOSURE PLANE
(23 - 641, 24 - 522, 33 - 432, 43 - 43)

M1 M2 M3

In all districts, other than districts with an A suffix, if an open area is provided along the full length of the front lot line with the minimum depth set forth in the following table, the provisions of Section 43-43 (Maximum Height of Front Wall and Required Front Setbacks) shall not apply. The minimum depth of such open area shall be measured perpendicular to the front lot line. However, in such instances, except as otherwise provided in this Section or in Sections 43-42 (Permitted Obstructions) or 43-45 (Tower Regulations), no building or other structure shall penetrate the alternate sky exposure plane set forth in the table in this Section. The sky exposure plane shall be measured from a point above the street line.

In an M1-6 District, if the open area provided under the terms of this Section is a public plaza, such open area may be counted toward the bonus provided for a public plaza, pursuant to Section 43-14 (Floor Area Bonus for Public Plazas and Arcades).

In M1-1 Districts, for community facility buildings the height above the street line shall be 35 feet.

ALTERNATE REQUIRED FRONT SETBACKS

ALTERNATE SKY EXPOSURE PLANE
(23 - 64, 24 - 53, 33 - 442, 43 - 44)

M1-3 M1-4 M1-5 M1-6

In the districts indicated, other than districts with an A suffix, any building or buildings, or portion thereof, which in the aggregate occupy not more than 40 percent of the lot area of a zoning lot or, for zoning lots of less than 20,000 square feet, the percent set forth in Section 43-451 (Towers on small lots), may penetrate an established sky exposure plane. (Such building or portion thereof is hereinafter referred to as a tower.) At any given level, such tower may occupy any portion of the zoning lot not located less than 15 feet from the street line of a narrow street, or less than 10 feet from the street line of a wide street, provided that the aggregate area so occupied within 50 feet of a narrow street shall not exceed 1,875 square feet and the aggregate area so occupied within 40 feet of a wide street shall not exceed 1,600 square feet.

If all of the buildings on a zoning lot containing such tower do not occupy at any level more than the maximum percent of the lot area set forth in this Section or Section 43-451 for towers, the tower may occupy any portion of the zoning lot located 20 feet or more from the street line of a narrow street or 15 feet or more from the street line of a wide street, provided that the aggregate area so occupied within 50 feet of a narrow street shall not exceed 2,250 square feet and the aggregate area so occupied within 40 feet of a wide street shall not exceed 2,000 square feet.

For M Districts with an A suffix, a building or other structure shall not exceed the maximum base heights or maximum building height set forth in paragraph (a) of this Section. A setback is required for all portions or buildings or other structures that exceed the maximum base height specified in paragraph (a) and shall be provided in accordance with paragraph (b). In districts without a maximum height limit, the tower provisions set forth in paragraph (c) shall apply.

1. Maximum base heights and maximum building heights
   
   The table below sets forth the maximum base heights and maximum building or other structure heights.
   
   MAXIMUM BASE HEIGHT AND MAXIMUM BUILDING HEIGHT
    

   District	Maximum Base Height (in feet)	Maximum Height of Buildings or other Structures (in feet)
   M1-1A  M2-1A  M3-1A	45	65
   M1-2A  M2-2A  M3-2A	65	95
   M1-3A  M2-3A	95	125
   M1-4A  M2-4A	125	155
   M1-5A	155	205
   M1-6A	155	245
   M1-7A	155	325
   M1-8A  M1-9A	155	N/A

   
   In addition, for zoning lots with a lot area greater than or equal to 20,000 square feet, a building may exceed the maximum building heights established in such table by 25 percent.
2. Any portion of a building above the maximum base height shall provide a setback with a depth of at least 10 feet from any street wall fronting on a wide street and a depth of at least 15 feet from any street wall fronting on a narrow street. However, such setback requirement may be modified as follows:
   1. the depth of such required setback may be reduced by one foot for every foot that the street wall is located beyond the street line, but in no event shall a setback of less than seven feet in depth be provided, except as otherwise set forth in this Section. To allow street wall articulation, where a street wall is divided into different segments and located at varying depths from the street line, such permitted setback reduction may be applied to each street wall portion separately;
   2. the depth of such required setbacks may include the depth of recesses in the street wall of the building base, provided that the aggregate width of any such recessed portion of a street wall with a setback less than seven feet, does not exceed 30 percent of the aggregate width of street wall# at any level;
   3. these setback provisions are optional for any building that either is located beyond 50 feet of a street line or oriented so that lines drawn perpendicular to it, in plan, would intersect a street line at an angle of 65 degrees or less. In the case of an irregular street line, the line connecting the most extreme points of intersection shall be deemed to be the street line#; and
   4. dormers may penetrate a required setback area, provided that the aggregate width of all dormers at the maximum base height does not exceed 40 percent of the width of the street wall of the highest story entirely below the maximum base height#. Such dormers need not decrease in width as the height above the maximum base height increases.
3. Towers
   
   For buildings in M1-8A and M1-9A Districts, no maximum height limit shall apply. However, any portion of a building above a height of 350 feet shall have a maximum lot coverage of 50 percent of the lot area of the zoning lot.
    

1. For zoning lots adjoining public parks
   
   M1 M2 M3
   
   In all districts, as indicated, a public park with an area of between one and 15 acres shall be considered a wide street for the purpose of applying the height and setback regulations as set forth in Section 43-43 (Maximum Height of Front Wall and Required Front Setbacks) to any building or other structure on a zoning lot adjoining such public park. However, the provisions of this Section shall not apply to a public park more than 75 percent of which is paved.
2. For zoning lots containing certain community facility uses
   
   M1
   
   In the district indicated, for certain community facility uses in specified situations, the Board of Standards and Appeals may modify the regulations set forth in Sections 43-41 to 43-45, inclusive, relating to Height and Setback Regulations, in accordance with the provisions of Section 73-64 (Modifications for Community Facility Uses).
    

M1 M2 M3

In all districts, as indicated, whenever a zoning lot is divided by a boundary between districts with different height and setback regulations, or whenever a zoning lot is divided by a boundary between a district to which the provisions of Section 43-45 (Tower Regulations) apply and a district to which such provisions do not apply, the provisions set forth in Article VII, Chapter 7 shall apply.

M1 M2 M3

In all districts, as indicated, wherever such districts are located within a Limited Height District, the maximum height of a building or other structure, or portion thereof, shall be as shown in the following table:

M1

In the district indicated, the regulations set forth in the following Sections shall apply to all buildings containing community facility uses:

Section 24-61        (General Provisions and Applicability)

Section 24-62        (Minimum Dimensions of Courts)

Section 24-63        (Outer Court Regulations)

Section 24-64        (Inner Court Regulations)

Section 24-65        (Minimum Distance Between Required Windows and Walls or Lot Lines)

Section 24-66        (Modifications of Court Regulations or Distance Requirements)

Section 24-68        (Permitted Obstructions in Courts).

The following regulations shall apply to any development or enlargement authorized pursuant to Section 42-321 (Residential uses in M1-1D through M1-5D Districts):

(a)        The total amount of residential floor area permitted on any zoning lot shall not exceed a floor area ratio of 1.65.

On zoning lots containing both residential use and community facility, manufacturing or commercial use, the maximum floor area shall be the maximum floor area permitted for either the commercial or manufacturing use as set forth in Sections 43-12 (Maximum Floor Area Ratio) through 43-14 (Floor Area Bonus for Arcades), or the community facility use as set forth in Section 43-122 (Maximum floor area ratio for community facilities), or the residential use as set forth in this Section, whichever permits the greatest amount of floor area.

On zoning lots containing both residential use and manufacturing or commercial use, the total floor area used for manufacturing or commercial use shall not exceed the amount permitted by Sections 43-12 through 43-14.

(b)        The maximum number of dwelling units shall equal the total residential floor area provided on the zoning lot divided by 675. Fractions equal to or greater than three quarters resulting from this calculation shall be considered to be one dwelling unit.

(c)        The maximum building height above curb level shall be 32 feet.

(d)        No such development or enlargement shall be permitted within 30 feet of the rear lot line.

(e)        The maximum distance from the street line to the street wall of such development shall be ten feet, unless modified by the City Planning Commission pursuant to Section 44-28 (Parking Regulations for Residential Uses in M1-1D Through M1-5D Districts).

(f)        No side yards shall be required. However, if any open area extending along a side lot line is provided at any level it shall have a width of not less than eight feet. However, enlargements of single-family or two-family residences existing as of June 20, 1988, shall be exempt from this requirement, provided such enlarged building does not exceed a height of two stories.