Should San Francisco voters approve Proposition I? (November 3, 2026 ballot)

What's this about?

People disagree about whether Proposition I would help San Francisco provide more low-cost homes.

The plan would use money from property-sale taxes for housing and tenant help.

What supporters say

• Proposition I could protect a steady stream of money for building and saving low-cost homes.
• Regular reports and checks could help people see how the city spends this money.
• Help for renters could prevent some evictions and help people stay in their homes.

What critics say

• Higher property-sale taxes might discourage some sales and new building.
• The plan could leave city leaders with less freedom to use money elsewhere.
• More money would not fix slow permits, high costs, or other building problems.

How to read this

The number of points on each side does not show who is right; strong proof matters more.

Proposition I would dedicate a major stream of San Francisco transfer-tax revenue to affordable housing if voters approve it on Nov. 3, 2026. The measure promises more predictable housing funding, but opponents say it could reduce budget flexibility, affect real-estate activity and fail to overcome the city’s construction bottlenecks.

The case for

The strongest argument is that Proposition I would turn a recognized housing need into a protected, recurring source of money. The Controller estimates that the measure could raise about $119 million a year for the House SF Fund. At least 60 percent would go to building affordable homes, 25 percent to preserving or acquiring housing, and 10 percent to tenant stability or homelessness prevention. 1

San Francisco planning and housing-finance reports identify substantial funding needs and describe local money as an important part of assembling the capital required for affordable-housing projects. The city’s planning documents also show potential housing sites and the barriers attached to them, suggesting that a dependable source of local funding could help move projects forward, even if it cannot solve every problem. (see Figure 1)

The measure would also fund housing stability, not just construction. Existing city reporting describes transfer-tax-funded programs that help prevent evictions and provide tenant assistance. Research has linked housing disadvantage with poorer mental-health outcomes, making prevention spending a plausible way to improve housing security. But the available evidence does not show how much Proposition I would reduce displacement, homelessness or other outcomes. 2

Proposition I would require reporting and audits of House SF revenue. That could make spending easier to track and create a regular opportunity to examine whether money reached the programs named in the measure. Greater transparency is a real benefit, though it would not guarantee good project choices, faster permitting, enough staff or completed affordable units. 3

The case against

The main objection is fiscal. Proposition I would move roughly $120 million a year from the flexible General Fund into a restricted housing fund. During budget shortfalls, that could increase the projected deficit or force cuts and delays elsewhere. This is more than an accounting change: money committed to housing would be less available for other city priorities. 4

Opponents also warn that transfer taxes can influence real-estate behavior. Studies of Los Angeles’s Measure ULA have found possible effects on transactions, city finances and multifamily development, including reduced development activity. Those findings offer a warning, but they do not settle what would happen in San Francisco. Proposition I would not raise the combined top tax rate on covered properties; instead, it would lower an existing rate while imposing a nearly equivalent House SF Tax. An exemption for some recently completed multifamily properties could also reduce the measure’s added deterrent effect. Still, sales timing, transaction structures and the restricted use of the money could affect behavior. 5

The revenue itself is uncertain because it would depend on sales of properties valued above $10 million, a narrow and cyclical tax base. Interest rates, property values and the timing of large transactions could cause collections to vary substantially. The Controller’s annual estimate is therefore a projection, not a guarantee.

Finally, dedicated money does not remove the barriers to building housing. City sources identify land, zoning, permitting, construction costs, financing and administrative capacity as constraints. Housing programs depend on successful project financing and implementation as well as available funds. Recent city reporting distinguishes between resources committed and homes or services actually delivered, underscoring how much results depend on execution. (see Figure 2) 6