71 Stevenson St

Where 71 Stevenson St is

Its block in Downtown San Francisco, drawn from San Francisco's own building outlines and street centerlines.

The plan: window line, shape and floor rhythm

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

The typical floor has 681 ft of exterior wall, and across 22 residential floors the building carries 14,972 ft of it in total, divided among the 403 homes this screen estimates.

Its plate is moderately compact at 0.58: 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 18.3 homes per floor, repeated on every residential floor, since this building's outline does not change as it rises.

Why 71 Stevenson St scores 72 out of 100

Daylight efficiency 80, Interior depth 42, Scale 100, Finance 70 — each out of 100, then weighted.

Most of what it earns comes from daylight efficiency, and what holds it back most is interior depth, at 42 out of 100: deepest interior point 63 ft from a facade, scored from 80 ft down to 40 ft.

Built in 1986

San Francisco records this building as going up in 1986, 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 80% daylight figure above deserves.

What the conversion would cost

$405 per square foot all-in across 473,447 sq ft of converted floor, or $191.7M in total — about $476K for each of the 403 homes.

That cost is charged across every converted square foot, including the 95,120 sq ft of windowless core, which has to be gutted, seismically braced and sprinklered like the rest of the building and then earns nothing. Against it the model sets a completed value of $366K a home, which for 403 homes is $147.5M.

What would have to be true

A $44.2M gap before any grant, $34.2M after the modeled one. The smallest single change that would close it: average unit size 19% down.

The shortfall before any grant is $44.2M. Closing it from the value side means each of the 403 homes finishing at $476K rather than the $366K the model assumes — 30% more. Closing it from the cost side means getting all-in cost down from $405 to $312 per square foot.

A modeled RESIDE grant of $10.0M moves that threshold to $451K a home. That is still above the $366K assumed, leaving $34.2M uncovered, which is why the grant does not unlock this one.

Nor do all four levers have to move. For 71 Stevenson St, one alone would close the gap at:

All four are sliders in the survey, where 71 Stevenson St re-scores against your own numbers.

How it compares in Downtown San Francisco

71 Stevenson St ranks 141st of the 205 buildings screened here, against a median score of 87.

Its floor plate is better lit than 32% of them, and shallower than 21% of them at its deepest interior point. On size it is the 34th largest by estimated homes. The full survey of all 205 buildings ranks and maps every one of them, and the list by address links each to its own page.

Within Financial District/South Beach and the C-3-O(SD) zone

115th of 165 in Financial District/South Beach, 33rd of 66 zoned C-3-O(SD) — the comparison that shares its rules, rents and streets.

San Francisco places 165 of the screened buildings in Financial District/South Beach. 71 Stevenson St ranks 115th of them against a median score of 88. 121 score 70 or more, their median deepest interior point is 47 ft from a facade against this building’s 63 ft, and together they would hold an estimated 40,456 homes. The group’s top scorer is 870 Market St, at 100.

66 of the screened buildings are zoned C-3-O(SD). 71 Stevenson St ranks 33rd of them against a median score of 72. 37 score 70 or more, their median deepest interior point is 59 ft from a facade against this building’s 63 ft, and together they would hold an estimated 18,546 homes. The group’s top scorer is 140 New Montgomery St, at 100.

Its nearest match in size: 55 2nd St

The screened building closest to 71 Stevenson St in converted floor area is 55 2nd St: 495,268 sq ft over 24 stories, against 473,447 sq ft over 23 here.

The two land within a few points of each other — 72 here, 70 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 300 ft apart.

Would it qualify for a RESIDE Act grant?

The model awards 71 Stevenson St $10.0M, 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 71 Stevenson St

The 4 closest the screen also covers, from 160 ft away. They are the colored outlines on the plan at the top of this page.

• 49 Stevenson St
  15 stories · 95% daylit · 140 estimated homes · scores 99/100 (Strong candidate)
  about 160 ft away
• 40 Jessie St
  5 stories · 100% daylit · 27 estimated homes · scores 88/100 (Strong candidate)
  about 160 ft away
• 575 Market St
  40 stories · 91% daylit · 489 estimated homes · scores 97/100 (Strong candidate)
  about 210 ft away
• 555 Market St
  21 stories · 78% daylit · 364 estimated homes · scores 66/100 (Worth a feasibility study)
  about 210 ft away