Overview
Worth knowing
- Rowhouse city — RSA-5 most common district, attached housing dominant. [confirmed]
- RSA-5 lot subdivision to 800 sf if 75% adjacent lots ≤1,000 sf. [confirmed §14-701 Note 2]
- Third-story setback rule in RSA-5 — 8 ft step-back if neighbors have only 2 stories. [confirmed]
+ 7 more in Quirks & notes
Districts
res_sf 10com 8res_mf 4mu 4ind 4spec 1
| Code | Name | Category | Min lot | Height | Coverage | FAR | Du/ac | Parking | Setbacks F/S/R |
|---|---|---|---|---|---|---|---|---|---|
| RSA-1 | Residential Single-Family 1 | res_sf | — | — | — | — | — | — | — / — / — |
| RSA-2 | Residential Single-Family 2 | res_sf | — | — | — | — | — | — | — / — / — |
| RSA-3 | Residential Single-Family 3 | res_sf | — | — | — | — | — | — | — / — / — |
| RSA-4 | Residential Single-Family 4 | res_sf | — | — | — | — | — | — | — / — / — |
| RSA-5 | Residential Single-Family 5 | res_sf | 800 sf | — | — | — | — | — | — / — / — |
| RSA-6 | Residential Single-Family 6 | res_sf | — | 35 ft | — | — | — | — | — / — / — |
| RT-1 | Residential Two-Family 1 | res_sf | — | — | — | — | — | — | — / — / — |
| RT-2 | Residential Two-Family 2 | res_sf | — | — | — | — | — | — | — / — / — |
| RTA-1 | Residential Two-Family Attached 1 | res_sf | 2,250 sf | — | — | — | — | — | — / — / — |
| RTA-2 | Residential Two-Family Attached 2 | res_sf | 1,080 sf | — | — | — | — | — | — / — / — |
| RM-1 | Residential Multi-Family 1 | res_mf | — | — | — | — | — | — | — / — / — |
| RM-2 | Residential Multi-Family 2 | res_mf | — | — | — | — | — | — | — / — / — |
| RM-3 | Residential Multi-Family 3 | res_mf | — | — | — | — | — | — | — / — / — |
| RM-4 | Residential Multi-Family 4 | res_mf | — | — | — | — | — | — | — / — / — |
| RMX-1 | Residential Mixed-Use 1 | mu | — | — | — | — | — | — | — / — / — |
| RMX-2 | Residential Mixed-Use 2 | mu | — | — | — | — | — | — | — / — / — |
| RMX-3 | Residential Mixed-Use 3 | mu | — | — | — | — | — | — | — / — / — |
| CMX-1 | Commercial Mixed-Use 1 | com | — | — | — | — | — | — | — / — / — |
| CMX-2 | Commercial Mixed-Use 2 | com | — | — | — | — | — | — | — / — / — |
| CMX-2.5 | Commercial Mixed-Use 2.5 | com | — | — | — | — | — | — | — / — / — |
| CMX-3 | Commercial Mixed-Use 3 | com | — | — | — | — | — | — | — / — / — |
| CMX-4 | Commercial Mixed-Use 4 | com | — | — | — | — | — | 0 | — / — / — |
| CMX-5 | Commercial Mixed-Use 5 | com | — | — | — | — | — | 0 | — / — / — |
| CA-1 | Commercial Auto-Oriented 1 | com | — | — | — | — | — | — | — / — / — |
| CA-2 | Commercial Auto-Oriented 2 | com | — | — | — | — | — | — | — / — / — |
| IRMX | Industrial-Residential Mixed-Use | mu | — | — | — | — | — | — | — / — / — |
| ICMX | Industrial Commercial Mixed-Use | ind | — | — | — | — | — | — | — / — / — |
| I-1 | Industrial 1 | ind | — | — | — | — | — | — | — / — / — |
| I-2 | Industrial 2 | ind | — | — | — | — | — | — | — / — / — |
| I-3 | Industrial 3 | ind | — | — | — | — | — | — | — / — / — |
| SP-CIV | Special Purpose — Civic | spec | — | -1 ft | 0.8 | 4 | — | — | — / 0 / 9 |
Confidence: confirmed partial under review not found
Overlays
H
Historic District Overlay
HPDesignated historic districts and individual landmarks
| review | Historical Commission review required |
|---|---|
| scope | Exterior changes, new construction, additions, demolition |
CC-SC
Cobbs Creek Special Controls
CORCobbs Creek corridor area
RB-SC
Roosevelt Boulevard Special Controls
CORRoosevelt Boulevard corridor area
Adopted building codes
Most jurisdictions opt in
Click a code label to open its state-by-state adoption atlas.
Quirks & notes
- Rowhouse city — RSA-5 most common district, attached housing dominant. [confirmed]
- RSA-5 lot subdivision to 800 sf if 75% adjacent lots ≤1,000 sf. [confirmed §14-701 Note 2]
- Third-story setback rule in RSA-5 — 8 ft step-back if neighbors have only 2 stories. [confirmed]
- RTA-2 district (June 2025) with 1,080 sf minimum lot. [confirmed]
- 3/4-height setback rule for higher-density districts. [confirmed §14-701 Note 7]
- CMX-4/CMX-5 parking elimination for MF (June 2025). [confirmed Bill 250524]
- SP-CIV no height limit. [confirmed]
- Pennsylvania: no state preemption as of late 2025. [confirmed]
- Rowhouse lot frontage must be at least 2/3 of minimum lot width. [confirmed]
- Tree replacement: all healthy trees ≥2.5 in DBH removed must be replaced. [confirmed §14-705]
Formulas
Definitions
- height
- Grade to highest point of structure. Title 14.
- lot_coverage
- Building footprint / lot area. Principal + accessory.
- far
- Gross floor area / lot area.
- du_ac
- impervious_cover
- setback_front
- Front property line to nearest building face.
- setback_side
- Side property line to nearest building face.
- setback_rear
- Rear property line to nearest building face.
- parking
- Spaces per dwelling unit unless noted.
- three_quarter_height_setback
- Side/rear setback = 3/4 building height in higher-density districts. §14-701 Note 7
Capacity calculations
- max_footprint_sf
lot_area_sf * lot_coverage- max_gfa_sf
lot_area_sf * far- buildable_width_ft
lot_width_ft - setback_side_ft * 2- buildable_depth_ft
lot_depth_ft - setback_front_ft - setback_rear_ft- buildable_envelope_sf
buildable_width_ft * buildable_depth_ft- max_stories_approx
max_height_ft / 10- max_gfa_from_envelope
min(buildable_envelope_sf * max_stories_approx, max_gfa_sf)- parking_required
units * parking
Massing explorer
Interactive 3D comparison across every district. Drag to orbit, scroll to zoom, use the slider to walk districts, and toggle applicable overlays in the right-side panel.
Sort by
Max height
— ft
——
Floor area ratio
—
——
Lot coverage
—%
——
Setbacks (F / S / R)
— ft
——
Parking
— /unit
——
Max density
— du/ac
——
Min lot size
— sf
——
Copy zoning profile
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| District | Category | Height | FAR | Coverage | Setbacks | Parking | Density | Min lot | Overlays |
|---|
Research status
Data quality
40%completeness62 confirmed30 partial10 inferred
Documented gaps
- Most district dimensional KPIs not extracted from §14-701 Table 14-701-1
- CMX series setback/height values not extracted
- RM series density calculations not extracted
- Full overlay list from Ch. 14-500 not retrieved
Known issues
schema:v1-legacypriority:lowdata:gaps-present
Other cities in this state
Nearest-alphabetical profiles. Click through to compare zoning patterns side-by-side.