Real estate appraisals in San Francisco

The market

San Francisco is a consolidated city-county of about 47 square miles of land area at the tip of a peninsula, hemmed in by water on three sides and by the San Mateo County line on the fourth. There is virtually no greenfield land outside a handful of large master- planned redevelopment areas. Treasure Island and Yerba Buena Island, Mission Bay, Mission Rock, Candlestick Point and the Hunters Point Shipyard, and Parkmerced, which are entitled through development agreements rather than base zoning and carry their own financing and special-tax structures. Everywhere else, almost all valuation work is on existing improvements, redevelopment of already-built sites, or conversion of one use to another. It is unusual among California submarkets in that a single local government controls assessment, planning, building code, rent regulation, and subdivision approval, which means a handful of local ordinances, not regional market forces, often drive the largest single adjustments in an appraisal.

What is built here

The 1906 earthquake and fire drew a hard line through the city's building inventory. Surviving pre-1906 Victorian stock is concentrated in districts the fire did not reach, the southern and western Mission, the Haight, Noe Valley, the western edges of the Western Addition, and Pacific Heights, while the fire burned roughly everything north and east of the Dolores Park / 20th Street line in the Mission along with most of the northeast quadrant, which was rebuilt in the 1906–1920s period. Edwardian stock is largely 1906–1915 reconstruction and therefore sits inside the burn zone as well as outside it; the two vintages should not be treated as one date range. The Sunset and Richmond districts are dominated by 1920s–1950s attached and semi-attached stucco row houses, including the large tracts of near-identical Doelger-era houses built in the late 1930s and 1940s. Typical lots are narrow and deep. The 25-foot-wide by roughly 100- to 120-foot-deep lot is the city standard: with zero or near-zero side yards, shared or common walls, and a ground- floor garage tucked under the living space. Multifamily stock runs heavily to two- to six- unit wood-frame buildings and pre-1979 apartment houses; condominium supply is concentrated in 1970s–1980s downtown towers and in the 2000s-and-later high-rise development of Rincon Hill, SoMa, and Mission Bay. Hillside sites (Twin Peaks, Diamond Heights, Potrero, Bernal, Telegraph and Russian Hills) are common and carry real site- development and view considerations.

What changes a valuation in San Francisco

Specific to this submarket. Every regulatory conclusion below still has to be re-verified by parcel and as of the effective date of value.

San Francisco Rent Ordinance (Administrative Code Chapter 37) plus Costa-Hawkins

Most residential rental units in buildings with a certificate of occupancy issued before June 13, 1979 are subject to local rent increase limits and just-cause eviction protection. Because Costa-Hawkins (Civil Code sec. 1954.50 et seq.) permits vacancy decontrol but does not allow the city to remove those units from regulation, a covered building's value is driven by actual in-place rents, not market rents, a long-tenured tenancy can sit far below market indefinitely. The income approach on covered multifamily must be built from the rent roll with tenancy duration, not from a market-rent pro forma, and the sales comparison approach requires comparables screened for the same in-place-rent condition. Single-family homes and condominiums are exempt from the local rent-increase formula under Costa-Hawkins only where the unit is separately alienable from title to any other dwelling unit, and the exemption does not apply where the prior tenancy was terminated by the owner's own no-fault action. Those units remain covered by the Rent Ordinance's just-cause eviction provisions: Chapter 37 exempts them from the rent formula, not from eviction control. That is why an SFR and a two-unit building on the same block can value on entirely different logic, and why "exempt from rent control" cannot be read as "vacant possession is available."

Tenant Protection Act of 2019 (AB 1482; Civil Code secs. 1946.2 and 1947.12) as the statewide floor beneath the local ordinance

Property outside Chapter 37 is not unregulated, and that distinction is where income- approach errors get made. AB 1482 caps annual increases at the lower of 5 percent plus the regional CPI change or 10 percent, and imposes just-cause eviction requirements, on residential property generally more than 15 years old measured on a rolling basis, so a 1985 San Francisco apartment building, which the local ordinance's June 1979 line does not reach, is nonetheless covered today and does not price off a market-rent pro forma. Single-family homes and condominiums are exempt from the state cap only where the owner is not a real estate investment trust, a corporation, or a limited liability company with a corporate member, and where the statutory notice has been given; a corporate- or LLC-held single-family rental is covered. The rolling 15-year line, the CPI component, and the statute's current sunset date all move, so each should be confirmed as of the date of value rather than carried forward from a prior report.

Mandatory Soft Story Retrofit Program (Ordinance 0066-13, 2013)

Applies to wood-frame buildings of three or more stories, or two stories over a basement/underfloor area extending above grade, containing five or more residential units, permitted for construction before January 1, 1978, and not previously seismically strengthened. Because the classic San Francisco building type is a wood-frame flat over an open ground-floor garage, a very large share of the pre-1978 multifamily inventory is captured. This is no longer a prospective obligation: the program's tiered compliance deadlines have all passed, so a captured building that has not been retrofitted is already past deadline and carries an open violation and accrued penalty exposure rather than a future cost to cure. Compliance status should be pulled from the Department of Building Inspection record, together with any recorded notice of violation, rather than taken from a seller or borrower representation, and unretrofitted comparables are not directly comparable to retrofitted ones without adjustment.

Condominium conversion restrictions and the tenancy-in-common (TIC) ownership form

San Francisco's Subdivision Code sharply restricts conversion of multi-unit buildings to condominiums, and the eligibility rules have changed repeatedly, the conversion lottery was suspended for a defined term under the city's 2013 expedited conversion program, and whether a lottery is operating, and on what terms, is not a stable fact. Current eligibility must be confirmed with San Francisco Public Works against the Subdivision Code in effect on the date of value rather than assumed from a prior assignment. The practical result of the restriction is a large, locally distinctive TIC market: buyers take a fractional interest with an occupancy agreement rather than a separately conveyed condominium unit. TIC interests generally require specialized fractional financing rather than conventional single-unit loans, and they do not sell at condominium pricing. An appraiser has to identify which ownership form a subject and each comparable actually is, condo, TIC, or unsubdivided whole building, because they are three different value planes, and the spread between them is a function of conversion eligibility, not of physical condition.

Consolidated city-county planning control: Planning Code height/bulk districts, discretionary review, and historic Article 10 / Article 11 designations

Entitlement risk is concentrated in one local body rather than split between city and county. Height and bulk district limits, neighborhood commercial district use controls, conditional use requirements, and the city's discretionary review process mean that highest-and-best-use analysis cannot be inferred from zoning envelope alone, the realistic entitlement path and its timeline drive land residual value. Article 10 landmark and historic district designation, and Article 11 conservation district designation in the downtown area, further constrain demolition and exterior alteration, which affects both redevelopment potential and the cost basis for rehabilitation.

Seismic geology: liquefaction-susceptible bay fill versus bedrock hillside

Large parts of the northeastern waterfront, the Marina, South of Market, and Mission Bay sit on artificial fill and are mapped under the Seismic Hazards Mapping Act as liquefaction-hazard zones, which triggers statutory natural hazard disclosure and, for new construction or major work, site-specific geotechnical investigation. Elsewhere the city is steeply hilly. Both conditions change site value independently of the improvements: fill sites carry foundation, insurance, and disclosure consequences; hillside sites carry retaining, drainage, and access cost, offset in some cases by view contribution that must be isolated as its own adjustment.

California Coastal Zone along the western shoreline, and the city's certified Local Coastal Program

San Francisco contains a limited segment of the California Coastal Zone along its western shoreline, the Ocean Beach frontage, the Zoo, and the Lake Merced area, and has a certified Local Coastal Program, so coastal development permit jurisdiction attaches to some Sunset, Parkside, and Lake Merced-adjacent property. It is a small share of the city, which is exactly why it gets missed. For a subject near Ocean Beach or Lake Merced, the mapped Coastal Zone boundary should be checked before the entitlement path is treated as an ordinary Planning Department matter: a coastal development permit adds a discretionary layer, appeal exposure, and timeline risk that the zoning designation alone does not disclose, and that difference belongs in the land residual rather than in a general location adjustment.

Mello-Roos community facilities district special taxes in the master-planned areas

The large master-planned districts: Treasure Island and Yerba Buena Island, Mission Bay, Mission Rock, Candlestick Point and the Hunters Point Shipyard, and Parkmerced, are financed in part through community facilities districts formed under the Mello-Roos Community Facilities Act of 1982 (Government Code section 53311 et seq.). The special tax appears as a separate line on the secured tax bill, is disclosable to buyers, and is not captured by the ad valorem rate an appraiser would otherwise assume. It must be verified on the actual tax bill for the subject and for each comparable, carried in the expense load on an income assignment, and used as a screening criterion in sales comparison: a unit inside a CFD and an otherwise identical unit outside one do not carry the same monthly payment, and the difference capitalizes.

Graduated real property transfer tax at the local level

San Francisco levies a real property transfer tax with rate tiers that escalate steeply with consideration, so the transaction cost on a large commercial or high-value residential transfer is materially higher here than under the flat county rate that applies in most of California. This affects net-proceeds analysis, the structuring of entity-level transfers, and the way market participants price round-trip transaction cost into required returns. All of which feed the discount rate and the reconciliation in a commercial assignment.

Post-2020 repricing of the downtown office market

The downtown/Financial District office sector has undergone a substantial repricing and elevated vacancy since 2020, and a meaningful share of transactions have been distressed or involved conversion-to-residential speculation rather than continued office use. For commercial and tax-appeal work this means dated comparables are actively misleading, the highest-and-best-use conclusion for an older Class B or C office building may no longer be continued office use, and the appraiser must document current-cycle evidence rather than relying on pre-2020 capitalization rates or per-square-foot indications.

Commercial and income property

San Francisco has a full commercial base rather than a residential-only one, and the sectors behave very differently from each other. The downtown/Financial District office core, the SoMa and Mission Bay office and life-science corridors, neighborhood commercial districts governed by use-specific Planning Code controls, hotel product concentrated around Union Square and Moscone, and a shrinking production-distribution-repair (PDR) industrial inventory in the eastern neighborhoods each require separate market evidence. Mixed-use buildings with ground-floor retail over rent-controlled residential flats are extremely common and are effectively two valuation problems in one file: an unregulated commercial income stream over a regulated residential one. For tax-appeal and litigation work, the post-2020 office repricing and the volume of conversion and repositioning proposals make current-cycle evidence and an explicit highest-and-best-use analysis essential rather than optional.

Assessment, appeals, and venue

Property assessment is handled by the Office of the Assessor-Recorder at City Hall, 1 Dr. Carlton B. Goodlett Place, Room 190: the same office records deeds, so ownership-change and transfer-tax questions run through one department. Property tax appeals are filed with the San Francisco Assessment Appeals Board, administered by the Clerk of the Board of Supervisors at City Hall. San Francisco is a September 15 county under Revenue & Taxation Code section 1603, so the regular filing period runs July 2 through September 15 rather than the November 30 date that applies in counties whose assessor does not notify all assessees by August 1; where September 15 falls on a weekend or holiday the deadline rolls to the next business day, and supplemental and escape assessments have their own 60-day windows. Litigation, eminent domain, probate, and family law matters are heard in San Francisco County Superior Court at the Civic Center Courthouse, 400 McAllister Street (civil division clerk in Room 103), which houses the civil, probate, eminent domain, and Unified Family Court calendars. The Hall of Justice at 850 Bryant Street is the criminal courthouse and is not the venue for any of those civil matters. Rent-regulation questions , coverage, allowable increases, capital improvement passthroughs, buyout filings, go to the San Francisco Rent Board at 25 Van Ness Avenue, Suite 700, and its records are a routine due-diligence source when valuing pre-1979 multifamily.

Sources

Checked by a reviewer who did not write the research. Where a claim could not be confirmed against a primary source it was removed rather than softened.

1. https://www.sf.gov/departments--assessor-recorder
2. https://www.sf.gov/departments--rent-board
3. https://sf.courts.ca.gov/divisions/civil-division
4. https://wayback.archive-it.org/20246/20221105001800/https://sfdbi.org/softstory
5. https://leginfo.legislature.ca.gov/faces/codes_displayText.xhtml?lawCode=CIV&division=3.&t itle=5.&part=4.&chapter=2.7.
6. https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=RTC&sectionNum =1603
7. https://codelibrary.amlegal.com/codes/san_francisco/latest/sf_admin/0-0-0-15062
8. https://www.conservation.ca.gov/cgs/geohazards/seismic-hazards
9. https://www.coastal.ca.gov/lcps.html