Zoning Report
Philadelphia, PA Zoning
Philadelphia regulates land use through Title 14 of The Philadelphia Code, with a citywide system of base zoning districts, overlay zoning districts, use regulations, development standards, and parking/loading rules. The code is administered primarily through the Department of Licenses and Inspections (L&I), with the Philadelphia City Planning Commission (PCPC) handling certain plan reviews and advisory functions, and the Zoning Board of Adjustment (ZBA) hearing appeals, special exceptions, and variances. The source material also indicates that overlays can modify the base district standards, which is especially important in areas affected by floodplain, steep slope, watershed, or neighborhood-specific controls.
Last researched May 2026
Zoning Districts in Philadelphia, PA
RSD, Residential Single-Family Detached Districts
Detached houses on individual lots.
Allowed uses: single-family detached dwellings
RSA, Residential Single-Family Attached Districts
Attached and semi-detached houses on individual lots.
Allowed uses: single-family attached dwellings, semi-detached houses
RTA, Residential Two-Family Attached Districts
Two-family, semi-detached houses on individual lots.
Allowed uses: two-family dwellings
RM, Residential Multi-Family Districts
Moderate- to high-density, multi-unit residential buildings.
Allowed uses: multifamily residential
RMX, Residential Mixed-Use Districts
Residential and mixed-use development, including master plan development.
Allowed uses: residential uses, mixed-use development
CMX-1, CMX-2, CMX-2.5 Neighborhood Commercial Mixed-Use Districts
Neighborhood-serving retail and service uses, including pedestrian-friendly retail commercial corridors.
Allowed uses: retail, service uses, mixed-use development
CMX-3 and CMX-4 Community Commercial Mixed-Use Districts
Community- and region-serving mixed-use development, including retail and service uses.
Allowed uses: retail, service uses, mixed-use development
CMX-5 Center City Commercial Mixed-Use District
Mixed-use development in the central core area of Center City.
Allowed uses: high-intensity mixed-use development, commercial uses, residential uses where allowed by code
IRMX, Industrial Residential Mixed-Use District
A mix of low-impact industrial, artisan industrial, residential, and neighborhood commercial uses.
Allowed uses: low-impact industrial, artisan industrial, residential, neighborhood commercial
ICMX, Industrial Commercial Mixed-Use District
Commercial and low-impact industrial uses.
Allowed uses: commercial uses, low-impact industrial uses
I-1, Light Industrial District
Low-impact uses including light industrial, fabrication, offices, and research and development.
Allowed uses: light industrial, fabrication, offices, research and development
I-2, Medium Industrial District
Light/moderate impact industrial uses including manufacturing, processing, and distribution.
Allowed uses: manufacturing, processing, distribution, industrial uses
I-3, Heavy Industrial District
Intensive, high-impact uses, including extractive industries and petroleum processing and storage.
Allowed uses: heavy industrial, extractive industries, petroleum processing and storage
SP-PO, Parks and Open Space District
Preserves and protects lands set aside for park and open space use.
Allowed uses: park use, open space use
SP-STA, Sports Stadium District
Large-scale specialized sporting facilities and associated large-capacity automobile parking areas.
Allowed uses: sporting facilities, associated parking
SP-INS, Institutional District
Institutional uses in accordance with an approved master plan.
Allowed uses: institutional uses
SP-AIR, Airport District
Airport uses and a complementary mix of uses, while minimizing impacts on surrounding areas.
Allowed uses: airport uses, complementary uses
Recent Zoning Changes
The provided research confirms that Philadelphia is operating under the 2026 current code and that the Philadelphia Zoning Code Base Districts Quick Guide was released on February 13, 2026. No specific adopted 2025-2026 zoning amendment text, rezoning ordinance, or pending bill details were included in the supplied source excerpts, so recent legislative changes should be verified directly with the City.
Setbacks, Lot Size & Height Limits in Philadelphia, PA
Philadelphia has dimensional standards in Chapter 14-700 and district-specific dimensional tables, including a commercial districts dimensional table. The provided research confirms that dimensional standards govern size, height, spacing, and related bulk controls, but the excerpts did not include enough numeric table entries to build a comprehensive citywide dimensional schedule.
| District | Standard | Requirement |
|---|---|---|
| Commercial Districts | dimensional standards | See (3) Commercial Districts Dimensional Table — The source confirms a dedicated commercial dimensional table exists, but specific setbacks, heights, or lot area values were not included in the supplied excerpt. |
| citywide | height, size, and spacing of buildings and structures | Regulated by the Philadelphia Zoning Code — ZBA page confirms these are core zoning controls. |
ADU, Rental & Special Use Rules in Philadelphia, PA
Accessory Dwelling Units
Philadelphia has a dedicated zoning code subsection for accessory dwelling units.
- A specific ADU standard exists in the current code under Chapter 14-600
- The supplied research did not include the full text of the ADU requirements
Overlay Districts in Philadelphia, PA
Floodplain controls / Special Flood Hazard Area-related overlay controls
Properties in the floodplain are subject to additional zoning and permit scrutiny. Site work within a Special Flood Hazard Area may require special documents or a review meeting, and flood-related mapping tools are available through City Atlas and FEMA resources.
Steep Slope Protection Overlay
The City requires PCPC review for steep slope overlay cases and requires topographic and slope information as part of review.
Wissahickon Watershed controls / reviews
Development in the Wissahickon watershed is subject to additional environmental and plan review requirements.
Neighborhood Conservation Overlay / NCA and NCO review references
The PCPC homepage references review services for an NCO or NCA, indicating neighborhood-specific overlay or conservation review mechanisms.
Philadelphia, PA Zoning FAQ
Are ADUs allowed in Philadelphia, PA?
Philadelphia has a dedicated zoning code subsection for accessory dwelling units.
How tall can buildings be in Philadelphia, PA?
Height limits are set per district — citywide: Regulated by the Philadelphia Zoning Code.
What zoning districts are in Philadelphia, PA?
Philadelphia, PA includes districts such as RSD, Residential Single-Family Detached Districts, RSA, Residential Single-Family Attached Districts, RTA, Residential Two-Family Attached Districts, RM, Residential Multi-Family Districts, RMX, Residential Mixed-Use Districts, CMX-1, CMX-2, CMX-2.5 Neighborhood Commercial Mixed-Use Districts, CMX-3 and CMX-4 Community Commercial Mixed-Use Districts, CMX-5 Center City Commercial Mixed-Use District.
Are there flood zones or overlay districts in Philadelphia, PA?
Environmental constraints are a meaningful part of zoning and permitting in Philadelphia, especially for floodplain areas, the Wissahickon watershed, and steep slopes. The supplied sources point to both zoning overlay review and separate permitting consequences for earth disturbance in sensitive areas.
Have there been recent zoning changes in Philadelphia, PA?
The provided research confirms that Philadelphia is operating under the 2026 current code and that the Philadelphia Zoning Code Base Districts Quick Guide was released on February 13, 2026.
Common questions about Philadelphia, PA zoning
Zoning Guides
- How to Check Zoning Before You Buy→
- Zoning Due Diligence Checklist→
- ADU Zoning Laws Explained→
- Variance vs. Special Use Permit→
- Zoning Red Flags Investors Miss→
- What Is a Nonconforming Use?→
New to zoning research? Learn what a zoning report covers, how to check the zoning of any property, or run zoning due diligence before your next deal.
More Pennsylvania Zoning Reports
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Deal-fit, approval path & risk flags for Philadelphia, PA
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- TITLE 14. ZONING AND PLANNING — Primary source confirming current zoning code structure, chapters, and citywide zoning framework.
- Philadelphia Zoning Code Base Districts Quick Guide — Provided plain-English district descriptions, broad use patterns, process summaries, and warning that overlays may alter base standards.
- Philadelphia Zoning Code Quick Guide | Philadelphia City Planning Commission | City of Philadelphia — Confirmed release date and official status of the February 2026 Quick Guide.
- (3) Commercial Districts Dimensional Table. — Confirmed existence of current dimensional tables, though the provided excerpt did not include the numeric standards.
- (11) Accessory Dwelling Units. — Confirmed that the current code contains a dedicated ADU standard.
- (9) Nonconforming Parking or Site Improvements. — Confirmed the code includes a dedicated nonconforming subsection for parking or site improvements.
- Get a site plan review | Services | City of Philadelphia — Detailed the triggers and submission requirements for PCPC site plan review, including steep slopes, watershed, lot line changes, and parking lot landscaping.
- Get a Site Work and Site Utility Permit | Services | City of Philadelphia — Provided permit triggers for earth disturbance, floodplain work, historic approvals, and site work documentation.
- Zoning Board of Adjustment | Homepage | City of Philadelphia — Explained ZBA role, appeals, variances, special exceptions, and deadlines after L&I refusals or referrals.
- ZBA — Confirmed active ongoing ZBA hearing activity and public hearing calendar infrastructure.
- Philadelphia City Planning Commission | Homepage | City of Philadelphia — Described PCPC functions, zoning ordinance role, plan review services, and upcoming public meeting activity.
- Maps and tools | Programs and initiatives | City of Philadelphia — Provided official floodplain mapping tools and explained how to verify flood risk and floodplain location.
This summary is AI-generated from public municipal sources and is not legal, engineering, or land-use advice. Always verify zoning with Philadelphia, PA officials before making decisions.