1563 Mission St
1563 Mission St is a 5-story building in Downtown San Francisco with 90% of its floor area within daylight reach of a facade. This screen estimates 40 homes and scores it 82 out of 100 for office-to-residential conversion suitability.
CA-11 · Screened 2026-10-12 · Strong candidate
Where 1563 Mission St is
Its block in Downtown San Francisco, drawn from San Francisco's own building outlines and street centerlines.
- Already housing
- Not screened
- 1563 Mission St
This building does not pencil on its own, but a modeled RESIDE Act grant would close the gap if the building qualified for one.
Every floor carries 1,013 sq ft of windowless core — area that must be gutted, seismically braced and sprinklered but can never be rented as an apartment. Across 4 residential floors that is 4,050 sq ft of cost carrying no revenue.
Modeled conversion metrics for 1563 Mission St, 2026-10-12.
| Suitability scoreStrong candidate | 82 / 100 |
|---|---|
| Storiesfrom 62 ft LiDAR (2010) height ÷ 12 ft floor-to-floor | 5 |
| Floor plateper floor, from the city footprint | 10,405 sq ft |
| Daylight efficiencyshare within 35 ft of a facade | 90% |
| Deepest interior pointviability threshold is 80 ft | 51 ft |
| Windowless coreper floor — renovated but never rentable | 1,013 sq ft |
| Estimated homesat 750 sq ft average | 40 |
| Conversion cost$405/sq ft all-in on 41,619 sq ft | $16.9M |
| Gap before grantshortfall against completed value | $2.2M |
| Modeled RESIDE grantbelow the statutory cap | $2.4M |
| BuiltSan Francisco's own record of the construction year | 1917 |
| ZoningMission | C-3-G |
| Opportunity Zonenot in a 2018 designated tract | No |
The plan: window line, shape and floor rhythm
41 ft of exterior wall for each home the screen estimates — enough for two- and three-bedroom homes across the plan.
The typical floor has 410 ft of exterior wall, and across 4 residential floors the building carries 1,639 ft of it in total, divided among the 40 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 10.0 homes per floor, repeated on every residential floor, since this building's outline does not change as it rises.
Why 1563 Mission St scores 82 out of 100
Daylight efficiency 100, Interior depth 73, Scale 27, Finance 100 — each out of 100, then weighted.
Score components for 1563 Mission St. Points are the subscore times its weight.
| Component | Subscore | Weight | Points |
|---|---|---|---|
| Daylight efficiency90% of the floor area within 35 ft of a facade, scored from 40% up to 90% | 100 | 45% | 45.0 |
| Interior depthdeepest interior point 51 ft from a facade, scored from 80 ft down to 40 ft | 73 | 25% | 18.3 |
| Scale40 estimated homes, scored from 0 up to 150 | 27 | 15% | 4.0 |
| Financecompleted value covers conversion cost with 1% to spare, which tops out the component | 100 | 15% | 15.0 |
Most of what it earns comes from daylight efficiency, and what holds it back most is scale, at 27 out of 100: 40 estimated homes, scored from 0 up to 150.
Built in 1917
San Francisco records this building as going up in 1917, 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 90% daylight figure above deserves.
What the conversion would cost
$405 per square foot all-in across 41,619 sq ft of converted floor, or $16.9M in total — about $421K for each of the 40 homes.
All-in cost per square foot for 1563 Mission 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 4,050 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 40 homes is $14.6M.
What would have to be true
A $2.2M gap before any grant, which the modeled $2.4M closes. What would reopen it soonest: circulation efficiency under 1% down.
The shortfall before any grant is $2.2M. Closing it from the value side means each of the 40 homes finishing at $421K rather than the $366K the model assumes — 15% more. Closing it from the cost side means getting all-in cost down from $405 to $352 per square foot.
A modeled RESIDE grant of $2.4M moves that threshold to $361K a home. That is below the assumed value, which is why this building counts as unlocked by the grant — subject to it qualifying under the law's vacant-and-abandoned test, which this data cannot show.
Each of these, moved on its own, would be enough to undo that for 1563 Mission St:
Single-assumption flip points for 1563 Mission St, each holding the other three at their defaults.
| Circulation efficiencythe binding constraint — the least this building would need | under 1% downto 80% |
|---|---|
| Average unit size | under 1% upto 751 sq ft |
| Completed value per home | 1% downto $361K |
| Conversion cost per square foot | 2% upto $264/sq ft |
All four are sliders in the survey, where 1563 Mission St re-scores against your own numbers.
How it compares in Downtown San Francisco
1563 Mission St ranks 120th of the 205 buildings screened here, against a median score of 87.
Its floor plate is better lit than 54% of them, and shallower than 47% of them at its deepest interior point. On size it is the 187th 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 Mission and the C-3-G zone
2nd of 4 in Mission, 10th of 22 zoned C-3-G — the comparison that shares its rules, rents and streets.
San Francisco places 4 of the screened buildings in Mission. 1563 Mission St ranks 2nd of them against a median score of 58. 2 score 70 or more, their median deepest interior point is 69 ft from a facade against this building’s 51 ft, and together they would hold an estimated 455 homes. The group’s top scorer is 1660 Mission St, at 83.
22 of the screened buildings are zoned C-3-G. 1563 Mission St ranks 10th of them against a median score of 76. 13 score 70 or more, their median deepest interior point is 51 ft from a facade against this building’s 51 ft, and together they would hold an estimated 2,588 homes. The group’s top scorer is 40 Leavenworth St, at 92.
Its nearest match in size: 1067 Market St
The screened building closest to 1563 Mission St in converted floor area is 1067 Market St: 39,504 sq ft over 6 stories, against 41,619 sq ft over 5 here.
1563 Mission St scores 82 to its 89, and with the size held roughly equal most of that shortfall comes from interior depth: 73 out of 100 here, 100 there (deepest interior point 24 ft from a facade, scored from 80 ft down to 40 ft). On the money they sit in the same place: each pencils only with the modeled RESIDE grant. The two stand about 3,400 ft apart.
Would it qualify for a RESIDE Act grant?
The model awards 1563 Mission St $2.4M, 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 1563 Mission St
The 4 closest the screen also covers, from 660 ft away. They are the colored outlines on the plan at the top of this page.
- 1640 Mission St5 stories · 59% daylit · 110 estimated homes · scores 34/100 (Marginal)about 660 ft away
- 1525 Market St8 stories · 49% daylit · 238 estimated homes · scores 27/100 (Unlikely)about 680 ft away
- 950 Minna St6 stories · 82% daylit · 72 estimated homes · scores 76/100 (Strong candidate)about 780 ft away
- 1660 Mission St6 stories · 88% daylit · 67 estimated homes · scores 83/100 (Strong candidate)about 830 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.