San Francisco Property Taxes: Assessment, Rates, and Payment

San Francisco property taxes fund core city services including schools, transit infrastructure, and public safety operations. This page covers how properties are assessed, how tax rates are calculated and applied, the payment schedule residents and property owners must follow, and the key distinctions between different property types and ownership situations. Understanding these mechanics is essential for homeowners, investors, and anyone acquiring real property within the city and county.

Definition and scope

San Francisco property taxes are ad valorem taxes levied on real property — land and improvements — located within the boundaries of the City and County of San Francisco. Because San Francisco is a consolidated city-county under California law, a single governing structure administers functions that in other parts of the state are split between a city government and a separate county government. Property tax administration falls primarily under two elected officials: the San Francisco Assessor-Recorder, who determines assessed values, and the San Francisco Treasurer-Tax Collector, who bills and collects the tax.

California's framework for local property taxation is established by the California Constitution, Article XIII A — commonly known as Proposition 13, enacted by voters in 1978. Under Proposition 13, the general property tax rate is capped at 1% of assessed value, with additional voter-approved levies permitted on top of that base rate. The California State Board of Equalization provides statewide oversight of assessment practices (California State Board of Equalization).

Scope limitations: This page covers property tax as administered within the geographic and governmental boundaries of the City and County of San Francisco. Properties in adjacent counties — Marin, San Mateo, Alameda, and Contra Costa — are assessed and taxed by their respective county assessors and tax collectors, and are not covered here. Federal property, tribal land, and property owned by qualifying nonprofit organizations may be exempt from standard ad valorem taxation under California Revenue and Taxation Code provisions; those exemptions are determined case by case by the Assessor-Recorder's office and are outside the detailed scope of this page.

How it works

Assessment

The Assessor-Recorder establishes the assessed value of every taxable parcel in San Francisco. Under Proposition 13, assessed value is set at the property's market value at the time of acquisition (the "base year value") and can increase by no more than 2% per year, regardless of actual market appreciation (California State Board of Equalization, Proposition 13 Overview). A change of ownership or completion of new construction triggers a reassessment to current market value.

The Assessor-Recorder uses three standard appraisal approaches:
1. Sales comparison approach — comparing the subject property to recent arm's-length sales of similar properties.
2. Income approach — capitalizing the income a property generates, used primarily for commercial and rental properties.
3. Cost approach — estimating the cost to replace improvements, adjusted for depreciation, used for special-use properties.

Rate calculation

The total tax rate applied to a parcel in San Francisco is the sum of the 1% base rate plus any separately authorized voter-approved levies. These additional levies — called "special taxes" or "direct assessments" — are approved through ballot measures and typically fund specific purposes such as school bonds, infrastructure bonds, or special districts. The combined rate for most San Francisco residential parcels has historically ranged above the 1% base, with the exact rate varying by parcel based on which overlay levies apply. The Treasurer-Tax Collector publishes the annual tax rate schedule for each tax rate area (San Francisco Treasurer-Tax Collector).

Billing and payment

The property tax year runs from July 1 through June 30. Two installments are due:
- First installment: covers July 1 – December 31; due November 1, delinquent after December 10.
- Second installment: covers January 1 – June 30; due February 1, delinquent after April 10.

A 10% penalty attaches to any installment paid after its delinquency date. If the second installment remains unpaid by June 30, an additional $75 redemption fee and a 1.5% per month penalty begin accruing (San Francisco Treasurer-Tax Collector, Property Tax Payment Information).

Common scenarios

New purchase: When a property sells, escrow typically prorates taxes based on the closing date, with the seller responsible for taxes through the day of transfer. The Assessor-Recorder issues a supplemental bill reflecting the difference between the prior assessed value and the new acquisition value; this supplemental bill is separate from the regular annual bill.

Proposition 19 transfers: California Proposition 19, approved by voters in November 2020 and effective February 16, 2021, significantly altered the rules for transferring a base year value between parent and child or grandparent and grandchild (California State Board of Equalization, Proposition 19). Under Proposition 19, the exclusion from reassessment applies only if the child uses the transferred property as a primary residence, and only up to a $1 million threshold above the assessed value.

Commercial vs. residential property: Both commercial and residential parcels are subject to the same Proposition 13 base-year assessment system. However, commercial properties are more frequently subject to reassessment because ownership changes in commercial real estate — including changes in controlling interest of legal entities — can constitute a "change of ownership" triggering reassessment under California Revenue and Taxation Code §64.

Exemptions: The Homeowner's Exemption reduces the assessed value of an owner-occupied residence by $7,000, producing a modest annual tax reduction (California State Board of Equalization, Homeowners' Exemption). The Disabled Veterans' Exemption and the Church and Welfare Exemption are among additional categories administered by the Assessor-Recorder.

Decision boundaries

Property owners face distinct decision points that carry tax consequences:

Appealing an assessed value: If an owner believes the Assessor-Recorder has overvalued a property, an appeal must be filed with the San Francisco Assessment Appeals Board within the filing window — generally July 2 through September 15 for the regular roll. Missing this window forecloses the right to appeal for that assessment year.

Triggering vs. avoiding reassessment: Certain transfers between legal entities, additions of co-owners, and inter-spousal transfers may or may not constitute a change of ownership. The distinction turns on the specific facts and applicable Revenue and Taxation Code sections; owners considering restructuring should verify with the Assessor-Recorder whether a proposed transaction will trigger reassessment.

Installment timing: Paying the second installment before December 10 of the prior calendar year (i.e., paying both installments with the first) can be useful for federal income tax deduction timing, though the $10,000 cap on the state and local tax (SALT) deduction under the federal Tax Cuts and Jobs Act of 2017 limits this benefit for most San Francisco property owners (IRS Publication 530).

Delinquency escalation: A property that remains delinquent for 5 years becomes subject to the tax defaulted property process under California Revenue and Taxation Code §3351, which can ultimately result in a tax sale. The Treasurer-Tax Collector administers this process and publishes default notices publicly.

For broader context on San Francisco's fiscal structure and how property tax revenue flows into the city's general fund and special funds, the San Francisco Metro Authority home provides an overview of the city's governance and finance framework. The San Francisco Controller's Office is responsible for auditing city accounts and reporting on annual revenue, including property tax receipts, as part of the San Francisco annual budget process.