440 Sutter St

440 Sutter St is a 26-story building in Downtown San Francisco with 74% of its floor area within daylight reach of a facade. This screen estimates 466 homes and scores it 62 out of 100 for office-to-residential conversion suitability.

CA-11 · Screened 2026-10-12 · Worth a feasibility study

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Also addressed as 450 Sutter St, 460 Sutter St and 464 Sutter St: San Francisco’s address records place all 4 on this one footprint.

Where 440 Sutter St is

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

350 Post St: scores 95 out of 100519 Powell St: scores 91 out of 100312 Sutter St: scores 89 out of 1009162SUTTER STSTOCKTON TUNLBUSH STPOWELL STCAMPTON PLBURRITT STANSON PLSTOCKTON STN100 ftDowntown San Francisco
Suitability score
0–29
30–49
50–69
70–100
  • Already housing
  • Not screened
  • 440 Sutter St
440 Sutter St and the 1,000 ft of Downtown San Francisco around it. The streets are drawn at the width of the right-of-way they run down, sidewalks included, and named, and every building on these blocks is drawn. What is left open and stippled is neither: a surface lot, a plaza or a vacant parcel. The screened buildings are colored by the ramp above, the same one the district map uses, carry their score, and each is a link to its own page. Each casts a shadow as long as its measured height lets it, so towers stand out from the low buildings around them; the unscreened buildings have no measured height and cast none. 440 Sutter St is outlined in its own score color at the outline it covers at ground level. Its windowless core is hatched. The inset places it among every building the screen covers.
68 ftAA50 ftDaylit 74%Core 6,194 sq ft
Floor plan: 74% of each floor sits within daylight reach of a facade. The shading is daylight, darkest at the windows and gone 35 ft in. The hatched area is windowless core: 6,194 sq ft per floor that must be renovated but can never be rented as an apartment. The dimension marks the deepest interior point, 68 ft from the nearest window. A–A is where the section beside it is cut.
Windowless core26 floors50 ft
Section A–A: cut across the depth of the plate, through the middle of the core. Daylight reaches 35 ft in from every facade, fading as it goes, and the hatched stripe left between the lit edges is floor that gets converted and can never be rented: 6,194 sq ft on the floor the screen scores, and 154,861 sq ft over 25 residential floors. The shaded ground floor is converted like the rest and counted as no homes.

This building does not pencil at default assumptions, even with a modeled RESIDE Act grant.

Every floor carries 6,194 sq ft of windowless core — area that must be gutted, seismically braced and sprinklered but can never be rented as an apartment. Across 25 residential floors that is 154,861 sq ft of cost carrying no revenue.

Modeled conversion metrics for 440 Sutter St, 2026-10-12.

Suitability scoreWorth a feasibility study62 / 100
Storiesfrom 290 ft LiDAR (2010) height ÷ 12 ft floor-to-floor26
Floor plateper floor, from the city footprint23,682 sq ft
Daylight efficiencyshare within 35 ft of a facade74%
Deepest interior pointviability threshold is 80 ft68 ft
Windowless coreper floor — renovated but never rentable6,194 sq ft
Estimated homesat 750 sq ft average466
Conversion cost$405/sq ft all-in on 592,060 sq ft$239.8M
Gap before grantshortfall against completed value$69.2M
Modeled RESIDE grantat the statutory per-award cap$10.0M
BuiltSan Francisco's own record of the construction year1929
ZoningFinancial District/South BeachC-3-R
Opportunity Zonenot in a 2018 designated tractNo

The plan: window line, shape and floor rhythm

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

The typical floor has 650 ft of exterior wall, and across 25 residential floors the building carries 16,256 ft of it in total, divided among the 466 homes this screen estimates.

Its plate is moderately compact at 0.70: 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 18.6 homes per floor, repeated on every residential floor, since this building's outline does not change as it rises.

Why 440 Sutter St scores 62 out of 100

Daylight efficiency 68, Interior depth 29, Scale 100, Finance 59 — each out of 100, then weighted.

Score components for 440 Sutter St. Points are the subscore times its weight.

ComponentSubscoreWeightPoints
Daylight efficiency74% of the floor area within 35 ft of a facade, scored from 40% up to 90%6845%30.5
Interior depthdeepest interior point 68 ft from a facade, scored from 80 ft down to 40 ft2925%7.3
Scale466 estimated homes, scored from 0 up to 15010015%15.0
Financeremaining gap is 25% of conversion cost, scored from 60% down to 0%5915%8.8

Most of what it earns comes from daylight efficiency, and what holds it back most is interior depth, at 29 out of 100: deepest interior point 68 ft from a facade, scored from 80 ft down to 40 ft.

Built in 1929

San Francisco records this building as going up in 1929, which puts it in the interwar stock.

As a rule, steel or concrete frames with punched windows and plates still narrow enough for daylight to reach the middle, often with high ceilings. Among the most convertible stock there is, and the reason so many early conversions were of buildings this age. 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 74% daylight figure above deserves.

What the conversion would cost

$405 per square foot all-in across 592,060 sq ft of converted floor, or $239.8M in total — about $515K for each of the 466 homes.

All-in cost per square foot for 440 Sutter St: base cost plus the code work a change of use triggers.

Base conversion cost$260/sq ft
Seismic retrofit (change of use)$45/sq ft
Plumbing risers to every unit$40/sq ft
Operable windows and glazing$30/sq ft
Additional egress stair$18/sq ft
Fire sprinklers (NFPA 13R)$12/sq ft
All-in$405/sq ft

That cost is charged across every converted square foot, including the 154,861 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 466 homes is $170.6M.

What would have to be true

A $69.2M gap before any grant, $59.2M after the modeled one. The smallest single change that would close it: average unit size 26% down.

The shortfall before any grant is $69.2M. Closing it from the value side means each of the 466 homes finishing at $515K rather than the $366K the model assumes — 41% more. Closing it from the cost side means getting all-in cost down from $405 to $288 per square foot.

A modeled RESIDE grant of $10.0M moves that threshold to $493K a home. That is still above the $366K assumed, leaving $59.2M uncovered, which is why the grant does not unlock this one.

Nor do all four levers have to move. For 440 Sutter St, one alone would close the gap at:

Single-assumption flip points for 440 Sutter St, each holding the other three at their defaults.

Average unit sizethe binding constraint — the least this building would need26% downto 557 sq ft
Completed value per home35% upto $493K
Conversion cost per square foot38% downto $160/sq ft

All four are sliders in the survey, where 440 Sutter St re-scores against your own numbers.

How it compares in Downtown San Francisco

440 Sutter St ranks 173rd of the 205 buildings screened here, against a median score of 87.

Its floor plate is better lit than 18% of them, and shallower than 13% of them at its deepest interior point. On size it is the 24th 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-R zone

142nd of 165 in Financial District/South Beach, 22nd of 25 zoned C-3-R — the comparison that shares its rules, rents and streets.

San Francisco places 165 of the screened buildings in Financial District/South Beach. 440 Sutter St ranks 142nd 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 68 ft, and together they would hold an estimated 40,456 homes. The group’s top scorer is 870 Market St, at 100.

25 of the screened buildings are zoned C-3-R. 440 Sutter St ranks 22nd of them against a median score of 90. 21 score 70 or more, their median deepest interior point is 32 ft from a facade against this building’s 68 ft, and together they would hold an estimated 2,773 homes. The group’s top scorer is 870 Market St, at 100.

Its nearest match in size: 100 1st St

The screened building closest to 440 Sutter St in converted floor area is 100 1st St: 570,885 sq ft over 27 stories, against 592,060 sq ft over 26 here.

The two land within a few points of each other — 62 here, 60 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 3,000 ft apart.

Would it qualify for a RESIDE Act grant?

The model awards 440 Sutter 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 440 Sutter St

The 4 closest the screen also covers, from 310 ft away. They are the colored outlines on the plan at the top of this page.

  • 519 Powell St
    9 stories · 100% daylit · 64 estimated homes · scores 91/100 (Strong candidate)
    about 310 ft away
  • 350 Post St
    11 stories · 100% daylit · 95 estimated homes · scores 95/100 (Strong candidate)
    about 370 ft away
  • 312 Sutter St
    6 stories · 100% daylit · 36 estimated homes · scores 89/100 (Strong candidate)
    about 570 ft away
  • 245 Post St
    6 stories · 100% daylit · 35 estimated homes · scores 89/100 (Strong candidate)
    about 700 ft away

A screen, not a feasibility study, from outlines and heights rather than plans: the method and how to correct a figure. If you know this building’s interior, you know what this model cannot see.