The City's residential zoning districts are listed in Table 14-401-1, below. When this Zoning Code refers to "Residential" zoning districts, it is referring to all of these districts as of the effective date of this Zoning Code.

Philadelphia's Residential zoning districts are primarily intended to create, maintain, and promote a variety of housing opportunities for individual households and to maintain and promote the desired physical character of neighborhoods. While the district regulations primarily accommodate residential use types, some nonresidential uses are also allowed. The Residential district standards provide development flexibility, while at the same time helping to ensure that new development is compatible with the City's diverse neighborhoods. In addition, the regulations offer certainty for property owners, developers, and neighbors about the limits of what is allowed. In the event of a conflict between any provision of this § 14-401 (Residential Districts) and any other provision of this Zoning Code, the latter shall govern.

The RSD, Residential Single-Family Detached districts are primarily intended to accommodate detached houses on individual lots. It is intended that RSD zoning be applied in areas where the land use pattern is characterized predominately by detached houses on individual lots or where such a land use pattern is desired in the future. The Zoning Code includes three RSD districts that are differentiated primarily on the basis of minimum lot area requirements.

The RSA, Residential Single-Family Attached districts are primarily intended to accommodate attached and semi-detached houses on individual lots, but may be applied in areas characterized by a mix of housing types, including detached houses. The districts are also intended to provide a density transition between RSD districts and RM districts. The Zoning Code includes five RSA districts that are differentiated primarily on the basis of minimum lot area requirements.

The RTA, Residential Two-Family Attached districts are primarily intended to accommodate two-family, semi-detached houses on individual lots, but may be applied in areas with a mix of housing types, including detached and attached houses.

The RM, Residential Multi-Family districts are primarily intended to accommodate moderate- to high-density, multi-unit residential buildings in areas where such development already exists or where it is desired in the future. The Zoning Code includes four RM districts. These districts are differentiated primarily on the basis of allowed minimum lot area per unit and allowed building heights.

The RMX, Residential Mixed-Use districts are intended to accommodate residential and mixed- use development. The RMX-1 district is further intended to promote conservation of existing topography, trees, natural waterways, and other natural resources, as well as preservation of historically significant buildings, structures, and property.

Principal uses that are allowed in Residential districts are set forth in Table 14-602-1. Uses classified as accessory uses are not regulated by the use table. Accessory uses are permitted in conjunction with allowed principal uses, provided they comply with all applicable regulations of § 14-603 (Use-Specific Standards) and § 14-604 (Accessory Uses and Structures).

Dimensional standards that apply in Residential districts are set forth in § 14-701 (Dimensional Standards).

Subsequent to the effective date of this Zoning Code, no rezoning to an RMX-1 or RMX-2 district shall be effective until a master plan for such district has been approved in accordance with § 14-304(3)(e)(.1) (Master Plan Districts).

The City's Commercial and Commercial Mixed-Use zoning districts are listed in Table 14-402-1, below. When this Zoning Code refers to "Commercial" zoning districts, it is referring to all of these districts as of the effective date of this Zoning Code.

Philadelphia's commercial zoning districts are primarily intended to accommodate and promote neighborhood-, community- and region-serving commercial uses, as well as mixed-use development consisting of commercial and residential uses in the same building or on the same site. This type of mixed-use development is encouraged in many areas of the City because it reflects the City's traditional urban, pedestrian-oriented character. Encouraging residential development in Commercial zoning districts also provides increased housing choice and reduces motorized transportation demands. The Commercial districts are distinguished primarily on the basis of allowed uses and commercial floor area limits. In the event of a conflict between any provision of this § 14-402 (Commercial and Commercial Mixed-Use Districts) and any other provision of this Zoning Code, the latter shall govern.

The CMX-1, Neighborhood Commercial Mixed-Use district is primarily intended to accommodate low-impact, small-scale, neighborhood-serving retail and service uses in storefront buildings, as well as the types of residential uses allowed in surrounding zoning districts.

The CMX-2, Neighborhood Commercial Mixed-Use district is primarily intended to accommodate active commercial and mixed-use development, including neighborhood-serving retail and service uses. The range of allowed uses is broader than the CMX-1 district.

The CMX-2.5, Neighborhood Commercial Mixed-Use district is primarily intended to accommodate active commercial and mixed-use development, including pedestrian-friendly retail and service uses in commercial nodes and along commercial corridors. The range of allowed uses is slightly narrower than the CMX-2 district and the development standards are intended to promote a pedestrian-oriented environment.

The CMX-3, Community Commercial Mixed-Use district is primarily intended to accommodate active commercial and mixed-use development, including community- and region-serving retail and service uses. The range of allowed uses is broader than the CMX-1 and CMX-2 districts.

The CMX-4, Core Commercial Mixed-Use district is primarily intended to accommodate mixed-use development, including a broad range of nonresidential uses, in the core of high-density commercial and mixed-use areas.

The CMX-5, Center City Core Commercial Mixed-Use district is primarily intended to accommodate mixed-use development in the central core area of center City.

The primary purpose of the CA-1 and CA-2, Auto-Oriented Commercial districts is to accommodate a very broad range of uses, often in the physical form of shopping centers and other destination-oriented uses in which a large percentage of customers will arrive by automobile.

Principal uses are allowed in Commercial districts in accordance with Table 14-602-2. Uses classified as accessory uses are not regulated by the use table. Accessory uses are permitted in conjunction with allowed principal uses, provided they comply with all applicable regulations of § 14-603 (Use-Specific Standards) and § 14-604 (Accessory Uses and Structures).

Dimensional standards that apply in Commercial districts are set forth in § 14-701 (Dimensional Standards).

The City's Industrial and Industrial Mixed-Use zoning districts are listed in Table 14-403-1, below. When this Zoning Code refers to "Industrial" zoning districts, it is referring to all of these districts as of the effective date of this Zoning Code.

The IRMX, Industrial Residential Mixed-Use district is primarily intended to accommodate a mix of very low-impact industrial uses, including artists and artisan industrial, and residential and neighborhood-oriented commercial uses.

The ICMX, Industrial Commercial Mixed-Use district is primarily intended to accommodate commercial and low-impact industrial uses. The district may serve as a buffer between Industrial districts and Commercial and Residential Districts.

The I-1, Light Industrial district is primarily intended to accommodate low-impact employment- generating land uses, such as light industrial, assembly, fabrication, offices, research and development, small-scale wholesaling, local distribution, and similar activities that generate few adverse operational impacts (e.g., noise, traffic).

The I-2, Medium Industrial district is primarily intended to accommodate light industrial uses, moderate-impact uses, and employment activities such as manufacturing, distribution, processing, industrial parks, and other activities that may generate noise, odor, vibration, after hours activities, or traffic impacts well beyond the subject property lines.

The I-3, Heavy Industrial district is primarily intended to accommodate intensive, high-impact uses, including extractive industries, petroleum processing, storage, terminals, tanks, pipes, and other activities generating high levels of noise, odor, or vibration, and often requiring empty "slack" space within the site.

The I-P, Port Industrial district is primarily intended to accommodate marine-related industrial uses such as docks, wharves, piers, transit sheds, and related facilities used in connection with the transfer, storage-in-transit, and incidental processing of cargo from or to waterborne craft.

Principal uses are allowed in Industrial districts in accordance with Table 14-602-3. Uses classified as accessory uses are not regulated by the use table. Accessory uses are permitted in conjunction with allowed principal uses, provided they comply with all applicable regulations of § 14-603 (Use-Specific Standards) and § 14-604 (Accessory Uses and Structures).

Dimensional standards that apply in Industrial districts are set forth in § 14-701 (Dimensional Standards).

Multiple principal uses and buildings are allowed on a single lot in all Industrial districts.

The SP-INS, Institutional (Special Purpose) district is intended to encourage the development of institutional uses, commercially-related facilities to service the institutional complex and area, and certain other nonresidential uses in accordance with an approved master plan, subject to certain limitations on the type of use and certain requirements for total area, gross floor area, percentage of land coverage, setbacks, off-street parking, off-street loading spaces, and signs.

Uses are allowed in SP-INS districts in accordance with Table 14-602-4. Multiple principal uses and principal structures are allowed on a single lot in the SP-INS district.

An SP-INS district must contain at least five acres of contiguous land area.

The gross floor area of all buildings may not exceed four hundred percent (400%) of the total area of the SP-INS district, exclusive of streets.

Not more than seventy percent (70%) of the SP-INS district area, exclusive of streets, may be occupied by buildings.

No front, side, or rear yards are required in this district, provided that, if an SP-INS-zoned lot is adjacent to a lot in a Residential district, the minimum required front setback for a building or portion of a building located on the SP-INS lot shall be the minimum front setback required in the most restrictive adjacent Residential district.

Off-street loading must be provided, in accordance with the commercial district loading requirements of § 14-806 (Off-Street Loading), for the cumulative gross floor area of the buildings within the SP-INS district area established after March 1, 1978.

Fences are permitted in this district in accordance with the following limitations and conditions:

Applications within the SP-INS district may propose development that crosses over lot lines between individual abutting lots and without regard to individual lot setbacks, provided that (a) all of the lots on which the development is to occur are in common ownership, and (b) the proposed development is consistent with the approved master plan for the district.

The following additional regulations are applicable to SP-INS-zoned lots located adjacent to an RSD-1 zoning district and with street frontage on Germantown Avenue between Northwestern Avenue and Bells Mills Road. When the regulations of this § 14-404(10) (Regulations Applicable to Germantown Avenue) conflict with any other subsection of § 14-404 (SP-INS, Institutional (Special Purpose) District) or § 14-510 (Wissahickon Watershed Overlay District), the requirements of this § 14-404(10) (Regulations Applicable to Germantown Avenue) shall control.

The SP-ENT, Entertainment (Special Purpose) district is intended to encourage the orderly development of major entertainment facilities and certain other uses in accordance with an approved master plan. The master plan must be approved, and may be amended as necessary, and is subject to restrictions on the type of use and certain other development controls.

Boundaries should be so designated to afford a reasonable line of division between the district and adjacent uses consistent to carry out the purposes and scope of this Zoning Code. The master plan should also provide for reasonable, compatible spatial relationships between buildings that are situated on the periphery of the district and abutting non-SP-ENT district areas.

The total gross floor area of all the buildings may not exceed four hundred percent (400%) of the SP- ENT district. Underground parking will not be included in this calculation. Properties located in an SP-ENT district that is located adjacent to an SP-STA Sports Stadium (Special Purpose) District, will be permitted an additional gross floor area of two hundred percent (200%) of the SP-ENT district.

For sites that consist of four acres or more, at least thirty percent (30%) of the site must be open area, except that properties in the SP-ENT district that are approved with a green roof of at least three acres will only be required an open area equal to fifteen percent (15%) of the site. For sites of less than four acres, at least ten percent (10%) must be open area. At least fifty percent (50%) of this required open area must be constructed of a permeable surface except where a green roof of at least three acres has been approved, where only forty percent (40%) of the required open area must be constructed of a permeable surface. The total open area calculation may not include open-air parking lots. For purposes of this subsection (c), "green roof" shall mean a treatment to a rooftop that supports living vegetation; includes a synthetic, high quality waterproof membrane, drainage layer, root barrier, soil layer, and vegetation layer; is maintained for the life of the building; and has been approved by the Water Department for adequate stormwater mitigation.

Up to thirty percent (30%) of the required open area may be located above the ground level, provided that the open area above ground level is accessible by building occupants.

Front, side, and rear yards will be required in this district as follows and as may be required as part of the approval of an SP-ENT master plan:

Surface parking areas, and any access to parking, aisles, loading, or other servicing will not be permitted within 25 ft. of any residential district.

The height of any building shall not exceed 300 ft. or 30 stories.

Plans for all off-street parking areas must comply with the provisions of this section and with any prerequisite approvals of this Zoning Code. Within any SP-ENT district, off-street parking spaces must be provided for the following uses as listed below:

One parking space for every two units.

Parking provided in this district must be adequately served by high-capacity roads or driveways approved by the Streets Department as being adequate to safely serve the ingress and egress of patrons and guests using the facility, further provided:

Where parking spaces are in an open-air area, the area must:

Where an off-street parking lot containing more than 25 spaces or a portion of an off-street parking lot that contains over 25 spaces is located between a building and a public street, a pedestrian walkway at least five ft. in width must be provided in accordance with the following requirements:

Where an off-street parking lot, parking garage, driveway, or aisle is located between a building and a residential district, or is located so that there is not a building or portion of a building between the parking lot, parking garage, driveway, or aisle and a residential district, a planted buffer at least six ft. wide and six ft. high must be installed and maintained between the parking lot, parking garage, driveway, or aisle and the residential district in accordance with the following requirements:

Along all public streets, whether or not a setback is required, a landscaped area must be installed along the outer edge of the parking lot in accordance with the following requirements:

Within all off-street parking lots additional area must be provided for the installation and maintenance of landscaped areas. The total landscaped area must be at least ten percent (10%) of the area of the parking lot, including all spaces, aisles, and driveways, but excluding all walkways and screening required by this Zoning Code.

All required landscaped areas must meet the following requirements:

All parking lots must include lighting in accordance with the following requirements:

The master plan must include a plan that addresses the long-term maintenance of all facilities and improvements required by the SP-ENT district regulations.

The significant physical scale and extraordinary activity level of the uses permitted in this district create major impacts on the areas in which they are located. To ensure that these facilities are constructed in the most appropriate manner, design, scale, and density, the following requirements are imposed.

A lighting plan prepared by a qualified lighting engineer or designer must be submitted. No use will be approved unless it provides appropriate lighting levels throughout the site to support pedestrian safety.

Each application for a zoning permit must include public art meeting the requirements of this section, which is intended to allow for the broadest definition of public art and encourage imaginative interpretation of media.

Public art may include, but need not be limited to the following, separately or in combination:

Public art must be located within the building, upon the building, or within public spaces on the site. Public art may be provided within the public sidewalk, if authorization, by ordinance, is obtained.

The proposed public art must be approved by the Art Commission and must include a long-term maintenance plan for the public art. The Art Commission may, upon request, assist in the selection of an artist or artists for the project or the selection of an arts coordinator for the project.

Public art as required in this section must be provided at an individual or combined minimum cost in accordance with the following:

Public Art will not be required under this section for interior alterations in existing structures if the alterations apply directly to retail establishments or eating and drinking establishments not accessory to a licensed gaming facility.

The purpose of the SP-STA, Sports Stadium (Special Purpose) district is to accommodate large scale specialized sporting facilities, associated large capacity automobile parking areas, and related uses and facilities, while promoting high quality design of those facilities and mitigating any related adverse impacts on surrounding areas of the City.

All buildings, structures, and parking facilities within the district must comply with the following setback requirements:

No building on the lot, except as provided below, may exceed 38 ft. in height. This height restriction shall not apply to the following:

Off-street parking spaces must be provided in accordance with the following schedule and requirements within the SP-STA district, on any lot abutting the district, or on a lot on the opposite side of any street bounding the district:

The district or any lot in the district must be adequately served by high capacity roads or driveways approved by the Streets Department as being adequate to safely serve the ingress and egress of patrons and guests using the facility, further provided:

All stadium and grandstand lighting must be oriented to prevent glare on surrounding residential areas.

Where the district or a lot within the district abuts a residential district, a landscaped buffer must be provided along the entire length of the common lot line, the plan for which must be approved by the Commission.

The SP-PO Parks and Open Space (Special Purpose) district is intended to help preserve and protect lands set aside for park and open space use. Such areas and facilities provide many benefits to City residents and visitors. They provide cultural and recreation opportunities; preserve natural and scenic areas; protect sensitive natural resource areas; and offer refuge from the built, urban environment. The SP-PO district is intended to be applied to public parks and open space lands under the jurisdiction of City, state or federal government agencies. The district may be applied to privately owned lands only with the private property owner's consent.

Lots in the SP-PO district will be designated on the zoning maps as SP-PO-A (Active Parks and Open Space) or SP-PO-P (Passive Parks and Open Space).

If any portion of the actual site of a building, structure, activity area, or other improvement is within 200 ft. of any portion of a parcel within a zoning district other than SP-PO-A or SP-PO-P, the size, location, and design of that building, structure, activity area, or other improvement must comply with the dimensional regulations of the most restrictive adjacent zoning district within 200 ft. that is not separated by a waterway, except fences surrounding athletic fields may be up to 15 ft. in height.

If no portion of the actual site of a building, structure, activity area, or other improvement is within 200 ft. of any portion of a parcel within a zoning district other than SP-PO-A or SP-PO-P, there are no dimensional regulations, except that the maximum height shall be 38 ft. and fences surrounding athletic fields may be up to 15 ft. in height.

All lighting must prevent glare onto surrounding Residentially-zoned properties.

The SP-AIR, Airport (Special Purpose) district regulations are intended to recognize the unique character of airports and the impact they have on the surrounding community. To best serve the public health and welfare, the SP-AIR district supports the development of airport uses and a customary and complementary mix of uses, while minimizing adverse impacts on surrounding areas.

Boundaries shall be so designated to afford a reasonable line of division between the district and adjacent uses consistent to carry out the purposes of this Zoning Code.

The gross floor area of all buildings shall not exceed five hundred percent (500%) of the total area of the lot.

Not more than seventy percent (70%) of the lot area may be occupied by buildings.

No front setback is required.

No side setbacks are required. When side yards are provided, they must have the following minimum widths:

No rear setback is required.

There are no height restrictions in the SP-AIR district, except as height may be limited by the other provisions of this Zoning Code, including § 14-511 (Airport Hazard Control Overlay District).

The SP-CIV, Civic, Educational, and Medical (Special Purpose) district regulations are intended to recognize the unique character that schools, hospitals, community centers, and other civic and public-serving institutions have and the unique role that they play in the welfare of the city. SP-CIV district supports the development and preservation of public-serving institutions and a customary and complementary mix of uses, while minimizing adverse impacts on surrounding areas.

The gross floor area of all buildings shall not exceed four hundred percent (400%) of the total area of the lot.

Not more than eighty percent (80%) of the lot area may be occupied by buildings.

No side setbacks are required. When side yards are provided, they must be a minimum of 8 ft. wide.

The required rear setback is the greater of 9 ft. or ten percent (10%) of lot depth.

Fences shall be permitted in the SP-CIV district, provided that any fences must be in accordance with the regulations of § 14-706 (Fencing and Walls), as though they were located within a Commercial District, except that fences surrounding water treatment facilities, athletics fields, athletics courts, or other active recreational uses may be up to 15 ft. in height.