1742 Market St

Where 1742 Market 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

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

The typical floor has 460 ft of exterior wall, and across 13 residential floors the building carries 5,983 ft of it in total, divided among the 131 homes this screen estimates.

Its plate is moderately compact at 0.56: 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 10.1 homes per floor, repeated on every residential floor, since this building's outline does not change as it rises.

Why 1742 Market St scores 92 out of 100

Daylight efficiency 100, Interior depth 100, Scale 87, Finance 60 — each out of 100, then weighted.

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

Built in 1983

Philadelphia records this building as going up in 1983, which puts it in the late-modern stock.

As a rule, typically the hardest to convert: the deepest plates of any era, large central cores, and floor-to-floor heights tight enough that running residential drainage under a ceiling can be the thing that ends a project. 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 123,188 sq ft of converted floor, or $44.3M in total — about $339K for each of the 131 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 131 homes is $25.8M.

What would have to be true

A $18.6M gap before any grant, $10.7M after the modeled one. The smallest single change that would close it: average unit size 25% down.

The shortfall before any grant is $18.6M. Closing it from the value side means each of the 131 homes finishing at $339K rather than the $197K the model assumes — 72% more. Closing it from the cost side means getting all-in cost down from $360 to $209 per square foot.

A modeled RESIDE grant of $7.9M moves that threshold to $279K a home. That is still above the $197K assumed, leaving $10.7M uncovered, which is why the grant does not unlock this one.

Nor do all four levers have to move. For 1742 Market St, one alone would close the gap at:

All four are sliders in the survey, where 1742 Market St re-scores against your own numbers.

How it compares in Center City Philadelphia

1742 Market St ranks 5th 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 93% of them at its deepest interior point. On size it is the 61st 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

5th of 63 zoned CMX5 — the comparison that shares its rules, rents and streets.

63 of the screened buildings are zoned CMX5. 1742 Market St ranks 5th of them against a median score of 67. 28 score 70 or more, their median deepest interior point is 57 ft from a facade against this building’s 27 ft, and together they would hold an estimated 30,185 homes. The group’s top scorer is 112 N Broad St, at 93.

Its nearest match in size: 1211 Chestnut St

The screened building closest to 1742 Market St in converted floor area is 1211 Chestnut St: 119,139 sq ft over 12 stories, against 123,188 sq ft over 14 here.

The two land within a few points of each other — 92 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 2,700 ft apart.

Would it qualify for a RESIDE Act grant?

The model awards 1742 Market St $7.9M, 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 1742 Market St

The 4 closest the screen also covers, from 180 ft away. They are the colored outlines on the plan at the top of this page.

• 1700 Market St
  32 stories · 58% daylit · 924 estimated homes · scores 31/100 (Marginal)
  about 180 ft away
• 22 S 17th St
  20 stories · 65% daylit · 437 estimated homes · scores 45/100 (Marginal)
  about 230 ft away
• 1818 Market St
  40 stories · 62% daylit · 852 estimated homes · scores 35/100 (Marginal)
  about 320 ft away
• 1801 Market St
  27 stories · 66% daylit · 527 estimated homes · scores 40/100 (Marginal)
  about 320 ft away