60 S Market St
60 S Market St is a 18-story building in Downtown San Jose with 79% of its floor area within daylight reach of a facade. This screen estimates 241 homes and scores it 78 out of 100 for office-to-residential conversion suitability.
CA-18 · Screened 2026-09-12 · Strong candidate
Where 60 S Market St is
Its block in Downtown San Jose, drawn from San Jose's own building outlines and street centerlines.
- Already housing
- Not screened
- 60 S Market St
This building does not pencil at default assumptions, even with a modeled RESIDE Act grant.
Every floor carries 3,476 sq ft of windowless core — area that must be gutted, seismically braced and sprinklered but can never be rented as an apartment. Across 17 residential floors that is 59,084 sq ft of cost carrying no revenue.
Modeled conversion metrics for 60 S Market St, 2026-09-12.
| Suitability scoreStrong candidate | 78 / 100 |
|---|---|
| Storiesfrom 214 ft LiDAR height ÷ 12 ft floor-to-floor | 18 |
| Floor plateper floor, from the city footprint | 16,769 sq ft |
| Daylight efficiencyshare within 35 ft of a facade | 79% |
| Deepest interior pointviability threshold is 80 ft | 59 ft |
| Windowless coreper floor — renovated but never rentable | 3,476 sq ft |
| Estimated homesat 750 sq ft average | 241 |
| Conversion cost$405/sq ft all-in on 285,067 sq ft | $115.5M |
| Gap before grantshortfall against completed value | $13.0M |
| Modeled RESIDE grantat the statutory per-award cap | $10.0M |
| BuiltSan Jose does not publish a construction year with this data | — |
| ZoningDowntown San Jose | DC |
| Opportunity Zonecensus tract 06085500800, 2018 designation | Yes |
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 521 ft of exterior wall, and across 17 residential floors the building carries 8,860 ft of it in total, divided among the 241 homes this screen estimates.
Its plate is compact at 0.78: close to a square or a circle, the most efficient envelope an office can have and the least generous one for apartments: little perimeter to divide among homes. How window line and plate shape are measured.
At the model’s 750 sq ft average, the plan works out at about 14.2 homes per floor, repeated on every residential floor, since this building's outline does not change as it rises.
Why 60 S Market St scores 78 out of 100
Daylight efficiency 79, Interior depth 53, Scale 100, Finance 96 — each out of 100, then weighted.
Score components for 60 S Market St. Points are the subscore times its weight.
| Component | Subscore | Weight | Points |
|---|---|---|---|
| Daylight efficiency79% of the floor area within 35 ft of a facade, scored from 40% up to 90% | 79 | 45% | 35.3 |
| Interior depthdeepest interior point 59 ft from a facade, scored from 80 ft down to 40 ft | 53 | 25% | 13.3 |
| Scale241 estimated homes, scored from 0 up to 150 | 100 | 15% | 15.0 |
| Financeremaining gap is 3% of conversion cost, scored from 60% down to 0% | 96 | 15% | 14.3 |
Most of what it earns comes from daylight efficiency, and what holds it back most is interior depth, at 53 out of 100: deepest interior point 59 ft from a facade, scored from 80 ft down to 40 ft.
What the conversion would cost
$405 per square foot all-in across 285,067 sq ft of converted floor, or $115.5M in total — about $479K for each of the 241 homes.
All-in cost per square foot for 60 S Market 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 59,084 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 $425K a home, which for 241 homes is $102.4M.
What would have to be true
A $13.0M gap before any grant, $3.0M after the modeled one. The smallest single change that would close it: completed value per home 3% up.
The shortfall before any grant is $13.0M. Closing it from the value side means each of the 241 homes finishing at $479K rather than the $425K the model assumes — 13% more. Closing it from the cost side means getting all-in cost down from $405 to $359 per square foot.
A modeled RESIDE grant of $10.0M moves that threshold to $438K a home. That is still above the $425K assumed, leaving $3.0M uncovered, which is why the grant does not unlock this one.
Nor do all four levers have to move. For 60 S Market St, one alone would close the gap at:
Single-assumption flip points for 60 S Market St, each holding the other three at their defaults.
| Completed value per homethe binding constraint — the least this building would need | 3% upto $438K |
|---|---|
| Average unit size | 3% downto 726 sq ft |
| Circulation efficiency | 3% upto 83% |
| Conversion cost per square foot | 4% downto $249/sq ft |
All four are sliders in the survey, where 60 S Market St re-scores against your own numbers.
How it compares in Downtown San Jose
60 S Market St ranks 30th of the 82 buildings screened here, against a median score of 64.
Its floor plate is better lit than 61% of them, and shallower than 65% of them at its deepest interior point. On size it is the 32nd largest by estimated homes. The full survey of all 82 buildings ranks and maps every one of them, and the list by address links each to its own page.
Within the DC zone
26th of 72 zoned DC — the comparison that shares its rules, rents and streets.
72 of the screened buildings are zoned DC. 60 S Market St ranks 26th of them against a median score of 61. 31 score 70 or more, their median deepest interior point is 68 ft from a facade against this building’s 59 ft, and together they would hold an estimated 23,276 homes. The group’s top scorer is 1 Almaden Blvd, at 100.
Its nearest match in size: 150 Almaden Blvd
The screened building closest to 60 S Market St in converted floor area is 150 Almaden Blvd: 259,668 sq ft over 19 stories, against 285,067 sq ft over 18 here.
The two land within a few points of each other — 78 here, 81 there — so at this size the screen reads them as much the same prospect. On the money they part ways: 150 Almaden Blvd pencils only with the modeled RESIDE grant, while 60 S Market St falls short even with the modeled grant. The two stand about 1,100 ft apart.
Would it qualify for a RESIDE Act grant?
The model awards 60 S Market 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.
This building does sit in census tract 06085500800, a 2018 designated Opportunity Zone, which Section 201 lets HUD favor — one of the few statutory priorities this screen can actually check.
Other buildings screened near 60 S Market St
The 4 closest the screen also covers, from 150 ft away. They are the colored outlines on the plan at the top of this page.
- 81 Post St9 stories · 100% daylit · 51 estimated homes · scores 90/100 (Strong candidate)about 150 ft away
- 80 S Market St10 stories · 96% daylit · 243 estimated homes · scores 94/100 (Strong candidate)about 180 ft away
- 30 Post St17 stories · 63% daylit · 438 estimated homes · scores 51/100 (Worth a feasibility study)about 210 ft away
- 51 S Market St8 stories · 67% daylit · 146 estimated homes · scores 52/100 (Worth a feasibility study)about 260 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.