How San Francisco Got Here: Two Decades of Housing Decisions That Built Today's Crisis

This week's Board of Supervisors hearing on Mission District zoning amendments surfaced a familiar tension in San Francisco: how did we arrive at a moment where median rents exceed $3,400 monthly, where construction of new housing has repeatedly stalled, and where entire neighborhoods face demographic collapse?

The answer lies not in any single policy failure, but in cumulative decisions stretching back to the early 2000s. When the dot-com boom accelerated after 2010, San Francisco's planning department inherited zoning maps designed for a city of 750,000 people. Today it holds 875,000. The mismatch proved structural.

By 2015, housing activists noted that San Francisco was approving fewer new units annually than Seattle or Portland, despite comparable population pressures. The city's Planning Code, last comprehensively revised in 1985, restricted building heights in neighborhoods like the Sunset and Richmond to two stories—a legacy of mid-century preference for single-family character. Parking requirements, designed when downtown San Francisco seemed in permanent decline, mandated expensive underground spots that drove construction costs skyward.

Tech sector growth between 2010 and 2022 proved the ultimate accelerant. As companies like Salesforce, Uber, and countless venture-backed startups concentrated in SoMa and South of Market, demand for housing spiraled. Yet the same era saw the closure of the Hunter's Point Shipyard redevelopment project—a potential source of 12,000 units—mired in environmental reviews and political disagreement over affordability percentages. The Transbay Transit Center opened in 2018 with minimal residential capacity nearby, a planning miss that haunted discussions for years.

The 2019 passage of California's SB-9 and SB-10 laws, permitting duplex conversion and modest upzoning statewide, revealed just how restrictive San Francisco's local rules had become. While progressive neighborhoods like the Haight and Castro eventually embraced incremental density, approval timelines stretched years. A 2023 study found that San Francisco's environmental review process—intended to protect quality of life—now routinely delayed housing projects by 18-24 months, adding millions to development costs.

Meanwhile, public land lay dormant. The 5.5-acre parcel at Treasure Island, intended for 8,000 mixed-income homes since 2014, remained largely undeveloped. The Parkside parcels near BART stations sat fallow while supervisors debated community benefits agreements.

These weren't inevitable outcomes. They were choices—often made with good intentions, to preserve neighborhood character or ensure affordability. But collectively, they created scarcity. And scarcity, in a global city with no nearby alternatives, breeds the displacement pressures we now confront.

Understanding that history matters as the city confronts its next planning cycle.

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