Transit-Oriented Housing
MIN has suppressed housing construction near the transit stations where the city most needs density — and now threatens to undermine the Mayor's Transit-Oriented Communities bill.
Transit-Adjacent Development Collapsed Inside MIN
Large projects inside MIN declined most severely in the transit-adjacent areas where the city most wants density. The closer to transit, the steeper the decline — the opposite of what transit-oriented policy is supposed to achieve.
| Distance to Transit | Inside MIN (change) | Outside MIN (change) |
|---|---|---|
| <0.25 mi | 35 → 17 (-46%) | — |
| 0.25–0.5 mi | 34 → 18 (-41%) | -50% |
| 0.5–1.0 mi | 44 → 9 (-77%) | -37% |
| >1.0 mi | 1 → 5 (+457%) | +100% |
The all-permits picture near transit tells the same story: inside MIN within a quarter mile of transit, permits fell 11.2% while outside MIN they grew 34.3% — a 45.5 percentage point swing.
Development near transit grew outside MIN and shrank inside it
This is exactly backwards from what any transit-oriented policy should produce. The areas closest to high-frequency transit — the places with the best infrastructure to support density — are the places MIN suppressed the most.
The Existing TOD Overlay Did Not Counteract MIN
Philadelphia’s existing Transit-Oriented Development overlay (§14-513) applies within 500 feet of 13 designated MFL stations. It provides height bonuses, increased FAR, up to 50% more dwelling units, and reduced parking. If transit-oriented incentives could overcome MIN’s affordability mandate, development within the TOD should have held up. It did not.
Only 171 of the study’s 11,431 permits (1.9%) fell within the actual 500-foot TOD overlay. The 2 post-MIN large projects are both at Berks Station — the same developer corridor that was active pre-MIN. No new developers entered any TOD zone after MIN took effect.
52nd, 56th, 60th, 63rd Street stations
Councilmember Gauthier’s four western MFL stations — 52nd, 56th, 60th, 63rd — Zero building permits — zero pre-MIN, zero post-MIN. The 500-foot TOD radius captures very little developable land in these areas, and MIN makes what little there is uneconomic. This directly informed the TOC bill’s expansion to a quarter-mile radius.
The Damage Is Concentrated in Transit-Oriented Zoning
The zoning categories most affected by MIN — CMX-3, CMX-4, CMX-5, IRMX, ICMX — are not randomly distributed across the city. They are deliberately mapped along commercial corridors and near transit stations, because those are the places the city’s zoning code directs density. MIN effectively downzoned these transit-oriented categories by making their bonus capacity inaccessible.
| Zone | Pre-MIN | Post-MIN | Change | Pre Units | Post Units | Unit Change |
|---|---|---|---|---|---|---|
| CMX-5 | 3 | 0 | −100% | 886 | 0 | −100% |
| CMX-2.5 | 19 | 3 | −82% | 853 | 68 | −91% |
| ICMX | 6 | 1 | −81% | 305 | 20 | −93% |
| CMX-3 | 8 | 2 | −72% | 539 | 70 | −86% |
| IRMX | 15 | 5 | −63% | 1,026 | 346 | −62% |
| CMX-4 | 10 | 4 | −55% | 1,303 | 1,059 | −10% |
| CMX-2 | 22 | 7 | −65% | 538 | 154 | −68% |
| RM-1 | 22 | 20 | +1% | 660 | 599 | +1% |
Base zoning does the heavy lifting, not overlays
Much of the debate around transit-oriented housing focuses on overlay districts — TOD, TOC, MIN. But the data shows that the base zoning map is what actually determines housing capacity. CMX-3, CMX-4, and CMX-5 are mapped near transit because the city wants density there. When MIN blocks the floor area bonuses in these categories, it effectively reverses the zoning map’s intent. The TOC overlay’s 30% FAR bonus adds capacity at the margins; MIN removes it at the foundation. The result is a net loss for transit-area housing production and the ridership growth that comes with it.
Looking Forward: MIN’s Threat to the TOC Bill
Mayor Parker’s Transit-Oriented Communities bill would expand the TOD overlay from 500 feet to a quarter mile around the same 13 MFL stations, granting a 50% density bonus for smaller-scale zones and a 30% FAR bonus for larger commercial zones. But the bill explicitly excludes the 30% FAR bonus for properties inside the MIN overlay (§14-513(5)(a)(.2)). Combined with the behavioral deterrent MIN creates, the overlay is estimated to cost 3,032 of the 14,527 housing units the bill would otherwise unlock — a 20.9% reduction.
Impact by Station
| Station | CD | MIN Coverage | Yield (no MIN) | MIN Loss | Net Yield | % Lost |
|---|---|---|---|---|---|---|
| 46th Street | D3 | 100% | 2,105 | −1,430 | 675 | 68% |
| Frankford TC | D7 | 85.9% | 1,335 | −918 | 417 | 69% |
| 52nd Street | D3 | 97.3% | 780 | −323 | 457 | 41% |
| Huntingdon | D7 | 65.6% | 1,186 | −220 | 966 | 19% |
| Somerset | D7 | 40.6% | 679 | −93 | 586 | 14% |
| 56th Street | D3 | 15.9% | 420 | −26 | 394 | 6% |
| Berks | D7 | 6.4% | 1,606 | −22 | 1,584 | 1% |
| 60th Street | D3 | 0.2% | 1,261 | — | 1,261 | — |
| 63rd Street | D3 | — | 1,314 | — | 1,314 | — |
| Spring Garden | D1 | — | 2,571 | — | 2,571 | — |
| Erie-Torresdale | D7 | — | 151 | — | 151 | — |
| Allegheny | D7 | — | 1,119 | — | 1,119 | — |
Yields are for near-term opportunity sites (soft sites) using the BPN zoning rules engine with Eriksen & Orlando (2022) construction cost thresholds. MIN impact uses a hybrid methodology: FAR bonus blocked by law for CMX-3/4/5/RMX-3 + DiD-adjusted 0.44 behavioral deterrent for density zones with 10+ unit capacity.
How MIN Undermines TOC: Two Mechanisms
The TOC bill’s 30% FAR bonus for CMX-3, CMX-4, CMX-5, and RMX-3 parcels is explicitly excluded inside the MIN overlay per §14-513(5)(a)(.2). This is a hard legal block written into the bill text — these bonus units simply do not exist on paper for MIN parcels.
For density-bonus zones (RM-1, CMX-1, CMX-2, CMX-2.5), the 50% TOC density bonus is legally available inside MIN. But our difference-in-differences analysis shows that 54% of new construction projects with 10+ unit capacity inside MIN do not proceed — the unfunded affordability mandate deters construction even where the bonus is technically accessible.
Impact by Council District
| District | Yield (no MIN) | FAR Blocked | Behavioral | Total MIN Loss | Net Yield |
|---|---|---|---|---|---|
| D3 (Gauthier) | 5,880 | −808 | −971 | −1,779 | 4,101 |
| D7 (Lozada) | 6,076 | −556 | −697 | −1,253 | 4,823 |
| D1 (Squilla) | 2,571 | — | — | — | 2,571 |
District 3 (Gauthier) — 30% of yield lost
46th Street (100% MIN coverage) and 52nd Street (97%) are the hardest hit. These stations have heavy CMX-2 and CMX-2.5 concentrations with larger lot sizes that cross the 10-unit threshold. 46th Street alone loses 1,430 of its 2,105 potential units — a 68% reduction at what should be D3’s strongest TOC station.
District 7 (Lozada) — 21% of yield lost
Frankford TC (86% MIN coverage) bears the brunt, losing 918 of 1,335 potential units. Somerset (41% coverage) and Huntingdon (66%) are also affected but to a lesser degree. Most D7 parcels are small RM-1 lots that stay under 10 units and are not legally subject to MIN.
Full TOC Analysis Available
Build Philly Now’s TOC advocacy site includes the complete housing yield analysis, council district breakdowns, soft site classification methodology, and the six-corridor expansion scenario. See the impact analysis for the full TOC bill housing yield breakdown.
The Pattern Is Clear
MIN has already suppressed near-transit development by 45.5 percentage points. The existing 500-foot TOD overlay could not overcome it. Now the same overlay threatens to reduce the TOC bill’s housing yield by 20.9% — nearly 3,032 units that Philadelphia needs to meet its 30,000-home goal.
The choice facing Council is whether to let an unfunded affordability mandate — one that has produced 18 affordable units in three years — continue to undermine the city’s most significant transit-oriented housing initiative.