Let's walk through the numbers at 3300 Mission Street, a 35-unit affordable housing project in the Mission District. According to publicly available documents from the state treasurer's office, the total development cost clocks in at $38.6 million. Divide that by 35 studio units and you get roughly $1.06 million per apartment. For studios averaging 250–350 square feet.
Let that marinate.
The headline figure of $903 per gross square foot sounds steep but almost defensible — until you realize about half the building's total square footage is eaten up by retail space, common areas, mechanical rooms, stairwells, and elevator cores. When you recalculate against the actual rentable apartment space — the square footage people will actually live in — the numbers get truly surreal: somewhere in the range of $3,500 to $4,000 per rentable square foot in total development costs. Even the hard construction costs alone land around $1,800–$2,000 per rentable square foot.
To put it in market terms: if a private investor built this project, they'd need to charge $8,000 to $10,000 a month per studio just to generate a reasonable return. For a studio. In a building with no parking.
Now, defenders of the status quo will point to prevailing wage requirements, affordable housing compliance costs, soft costs, and financing complexity. All real. But that's precisely the problem — the regulatory and bureaucratic overhead baked into San Francisco's affordable housing pipeline has made the process so expensive that it defeats its own purpose.
As one SF resident put it bluntly: "And now you are beginning to understand why simply 'building affordable housing only' is a non-starter. There's no profit in it. The city, county, and state don't want to build it themselves. So nothing happens."
Another local observer made an equally sharp point: affordable housing in SF is forced into small-scale projects where the unit economics are worst. "SF costs are so high that [scale] is more important than ever, yet instead the developers are forced to minimize the size of the projects, which makes each unit even harder to math out, and even less affordable for the people who need them the most."
This is the fundamental contradiction nobody at City Hall wants to confront. We keep voting for bonds, approving tax credits, and congratulating ourselves for "building affordable housing" — while the per-unit costs spiral into territory that would make a luxury condo developer blush. Every dollar wasted on bureaucratic bloat is a dollar that could have housed someone.
At $1.06 million per studio, we're not solving the housing crisis. We're subsidizing a broken system and calling it compassion. San Francisco deserves better math — and better results — for its money.


