115 S BROAD ST
115 S BROAD ST is a 21-story building in Center City Philadelphia with 96% of its floor area within daylight reach of a facade. This screen estimates 180 homes and scores it 93 out of 100 for office-to-residential conversion suitability.
PA-2 & PA-3 · Screened 2026-09-15 · Strong candidate
This building does not pencil at default assumptions, even with a modeled RESIDE Act grant.
Every floor carries 392 sq ft of windowless core — area that must be gutted, re-plumbed and sprinklered but can never be rented as an apartment. Across 20 residential floors that is 7,838 sq ft of cost carrying no revenue.
| Suitability scoreStrong candidate | 93 / 100 |
|---|---|
| Storiesfrom 276 ft LiDAR height ÷ 12 ft floor-to-floor | 21 |
| Floor plateper floor, from the city footprint | 8,855 sq ft |
| Daylight efficiencyshare within 35 ft of a facade | 96% |
| Deepest interior pointviability threshold is 80 ft | 40 ft |
| Windowless coreper floor — renovated but never rentable | 392 sq ft |
| Estimated homesat 750 sq ft average | 180 |
| Conversion cost$360/sq ft all-in on 177,098 sq ft | $63.8M |
| Gap before grantshortfall against completed value | $28.3M |
| Modeled RESIDE grantat the statutory per-award cap | $10.0M |
| ZoningCenter City Philadelphia | CMX5 |
| Opportunity Zonenot in a 2018 designated tract | No |
These figures are a screen, not a feasibility study, and they come from public footprint and height data rather than from plans. See how this was computed and what it cannot tell you, or open this building in the interactive survey to change the assumptions behind it.