By the Numbers: San Francisco's Housing Math Doesn't Add Up the Way Vienna's or Vancouver's Does

San Francisco permitted 1,712 new housing units in 2025, according to city Planning Department records — a figure that represents roughly one-third of the annual output Vancouver's regional authority has averaged over the past five years, and a fraction of the 60,000 subsidized units Vienna maintains through its municipally owned Wiener Wohnen program. The gap is not a matter of land or ambition. It is a matter of math, policy, and money.

The comparison matters right now because San Francisco faces a state-mandated Regional Housing Needs Allocation of 82,069 units by 2031 under the sixth RHNA cycle — a target that covers all income levels from very low to above moderate. With just over four years remaining and city projections suggesting current pipeline projects will deliver roughly 28,000 units by that deadline, the deficit is structural, not cyclical. The Planning Commission and the Mayor's Office of Housing and Community Development are under increasing pressure from Sacramento, which has already threatened to impose a builder's remedy that would strip local zoning controls.

The Tenderloin, where a third of residents live below the federal poverty line, has seen almost no market-rate construction in a decade. Mission District community land trusts, including the Community Land Trust Association, have preserved several hundred affordable units, but organizers acknowledge that pace is insufficient. The Prop A bond measure voters approved in 2024 allocated $300 million for affordable housing, yet rising construction costs — averaging $650,000 per unit for deed-restricted affordable projects in San Francisco, according to the Controller's Office — mean that bond money will fund fewer than 500 units.

What Vienna and Vancouver Actually Built

Vienna spends roughly €600 million annually on housing subsidies and has kept median rents at approximately €8 per square meter in its social housing stock, compared to San Francisco's median asking rent of $3,100 per month for a one-bedroom as of June 2026. Vienna's model relies on the city retaining land ownership in perpetuity. Vancouver, for its part, rezoned virtually its entire single-family residential land base in 2023, allowing fourplexes by right across 400,000 parcels — a move San Francisco's Board of Supervisors has debated in smaller, slower increments through measures like Senate Bill 9 implementation along corridors such as Geary Boulevard and El Camino Real.

San Francisco's by-right permitting reform, which the Board passed in limited form in March 2025, applies only to projects that are 100 percent affordable. Market-rate and mixed-income projects still face discretionary review, an appeals process that housing advocates say adds an average of 14 months and between $50,000 and $200,000 in carrying costs to mid-size developments. A report from the Terner Center for Housing Innovation at UC Berkeley found that entitlement delays in San Francisco are the longest of any major California city, exceeding Los Angeles by eight months on average.

The Policy Levers Still on the Table

The Mayor's Office has identified three corridors for accelerated production: the Caltrain-adjacent parcels in the Bayshore neighborhood, underutilized commercial blocks along Van Ness Avenue, and the 90-acre Schlage Lock site in the Visitacion Valley, where a mixed-income development stalled for three years over infrastructure financing. The Visitacion Valley project alone could deliver 1,650 units if infrastructure gap funding — estimated at $47 million — is resolved before the end of the fiscal year.

City economists are also watching whether the state's new $2.5 billion social housing pilot, passed as part of the 2026 budget in Sacramento, can be directed toward projects in high-cost jurisdictions like San Francisco. Under the pilot's current allocation formula, San Francisco would be eligible for roughly $180 million over four years — meaningful, but nowhere near the Vienna-level per-capita investment advocates say is required to move the needle on affordability at scale. Residents and developers tracking the RHNA deadline should watch the Planning Commission's October 2026 pipeline review, when updated unit counts and penalty exposure will be made public for the first time this cycle.