112 N Broad St

Where 112 N Broad St is

Its block in Center City Philadelphia, drawn from Philadelphia's own building outlines and street centerlines.

The plan: window line, shape and floor rhythm

40 ft of exterior wall for each home the screen estimates — enough for two- and three-bedroom homes across the plan.

The typical floor has 474 ft of exterior wall, and across 12 residential floors the building carries 5,693 ft of it in total, divided among the 144 homes this screen estimates.

Its plate is moderately compact at 0.63: a squarish plan, with enough perimeter for a conventional double-loaded corridor. How window line and plate shape are measured.

At the model’s 750 sq ft average, the plan works out at about 12.0 homes per floor, repeated on every residential floor, since this building's outline does not change as it rises.

Why 112 N Broad St scores 93 out of 100

Daylight efficiency 100, Interior depth 100, Scale 96, Finance 59 — each out of 100, then weighted.

Most of what it earns comes from daylight efficiency, and what holds it back most is finance, at 59 out of 100: remaining gap is 24% of conversion cost, scored from 60% down to 0%.

Built in 1896

Philadelphia records this building as going up in 1896, which puts it in the pre-1920 stock.

As a rule, the era that converts most readily: load-bearing masonry, small floor plates laid out before deep-plan offices were possible, operable windows and generous floor-to-floor heights. The usual obstacles are not daylight but hazardous materials, lifts and bringing structure up to current code. That is the era’s general tendency rather than a finding about this building — the model reads an outline and a height, and can see nothing inside — but it is the first thing an architect would want to know, and it colours how much confidence the 100% daylight figure above deserves.

What the conversion would cost

$360 per square foot all-in across 135,931 sq ft of converted floor, or $48.9M in total — about $340K for each of the 144 homes.

That cost is charged across every converted square foot, including the circulation and service area that earns nothing directly. Against it the model sets a completed value of $197K a home, which for 144 homes is $28.3M.

What would have to be true

A $20.6M gap before any grant, $12.0M after the modeled one. The smallest single change that would close it: average unit size 27% down.

The shortfall before any grant is $20.6M. Closing it from the value side means each of the 144 homes finishing at $340K rather than the $197K the model assumes — 73% more. Closing it from the cost side means getting all-in cost down from $360 to $208 per square foot.

A modeled RESIDE grant of $8.6M moves that threshold to $280K a home. That is still above the $197K assumed, leaving $12.0M uncovered, which is why the grant does not unlock this one.

Nor do all four levers have to move. For 112 N Broad St, one alone would close the gap at:

All four are sliders in the survey, where 112 N Broad St re-scores against your own numbers.

How it compares in Center City Philadelphia

112 N Broad St ranks 1st of the 100 buildings screened here, against a median score of 67.

Its floor plate is better lit than 100% of them, and shallower than 88% of them at its deepest interior point. On size it is the 58th largest by estimated homes. The full survey of all 100 buildings ranks and maps every one of them, and the list by address links each to its own page.

Within the CMX5 zone

1st of 63 zoned CMX5 — the comparison that shares its rules, rents and streets.

63 of the screened buildings are zoned CMX5. 112 N Broad St ranks 1st of them against a median score of 67, the top score in the group. 28 score 70 or more, their median deepest interior point is 57 ft from a facade against this building’s 34 ft, and together they would hold an estimated 30,185 homes.

Its nearest match in size: 1601 Walnut St

The screened building closest to 112 N Broad St in converted floor area is 1601 Walnut St: 138,332 sq ft over 15 stories, against 135,931 sq ft over 13 here.

The two land within a few points of each other — 93 here, 92 there — so at this size the screen reads them as much the same prospect. On the money they sit in the same place: each falls short even with the modeled grant. The two stand about 2,100 ft apart.

Would it qualify for a RESIDE Act grant?

The model awards 112 N Broad St $8.6M, on the assumption it qualifies. Whether it does, no published dataset can say.

That figure assumes the building meets the Act’s vacant-and-abandoned test, which turns on code-enforcement and receivership records no city publishes.

It does not sit in a 2018 designated Opportunity Zone, so it would not draw that Section 201 priority.

Other buildings screened near 112 N Broad St

The 4 closest the screen also covers, from 830 ft away. They are the colored outlines on the plan at the top of this page.

• 1500 John F Kennedy Blvd
  20 stories · 79% daylit · 431 estimated homes · scores 69/100 (Worth a feasibility study)
  about 830 ft away
• 211 N 13th St
  9 stories · 92% daylit · 78 estimated homes · scores 81/100 (Strong candidate)
  about 1,070 ft away
• 1601 John F Kennedy Blvd
  28 stories · 68% daylit · 912 estimated homes · scores 55/100 (Worth a feasibility study)
  about 1,110 ft away
• 1600 John F Kennedy Blvd
  20 stories · 75% daylit · 414 estimated homes · scores 61/100 (Worth a feasibility study)
  about 1,150 ft away