🏠 San Francisco Mortgage Calculator

Use our San Francisco mortgage calculator to estimate monthly payments in one of America’s most expensive housing markets. With a median home price around $1,200,000, San Francisco presents unique challenges including a graduated transfer tax reaching up to 6% on high-value properties, a significant market of tenancy-in-common (TIC) properties with specialized financing requirements, and a tech-driven economy that can shift market conditions rapidly. Whether you are eyeing a Victorian in the Mission or a modern condo in SoMa, enter your loan details below for a complete payment breakdown.

San Francisco Housing Market Overview

San Francisco’s housing market is among the most expensive in the nation, with the median single-family home price at approximately $1,200,000 and condos averaging around $900,000. The city’s compact 49-square-mile footprint and strong demand from the technology sector drive consistently high prices. Neighborhoods vary widely — Pacific Heights and Noe Valley often exceed $2,500,000 for single-family homes, while the Sunset and Richmond districts offer relatively more affordable options around $1,300,000–$1,600,000.

Tenancy-in-common (TIC) properties represent a significant portion of SF’s multi-unit housing stock. TICs typically sell at a 10%–20% discount to comparable condos but require specialized group financing or fractional loans, which carry higher interest rates. The city’s condo conversion lottery determines which TIC buildings can convert to condominiums each year.

Property Taxes and Local Costs

San Francisco property taxes follow California’s Prop 13 framework with a base rate of 1% of purchase price. The effective rate averages approximately 1.18% when including voter-approved bond measures and special assessments. San Francisco’s graduated transfer tax is a significant closing cost:

  • $0–$249,999: Transfer tax of $2.50 per $500 (0.50%)
  • $250,000–$999,999: $3.40 per $500 (0.68%)
  • $1,000,000–$4,999,999: $3.75 per $500 (0.75%)
  • $5,000,000–$9,999,999: $11.25 per $500 (2.25%)
  • $10,000,000–$24,999,999: $13.75 per $500 (2.75%)
  • $25,000,000 and above: $30.00 per $500 (6.00%)

Use our Percentage Calculator to determine your exact transfer tax amount based on the applicable rate tier.

Insurance and Special Considerations

Homeowners insurance in San Francisco typically costs $1,400–$4,000 per year. Earthquake insurance is particularly important given the city’s proximity to the San Andreas and Hayward faults. CEA policies cost $1,000–$4,500 per year in San Francisco, reflecting the elevated seismic risk. Properties in certain areas may also require flood insurance due to updated FEMA maps.

HOA fees for condos average $500–$900 per month and often include earthquake insurance, water, garbage, and building maintenance. Newer luxury buildings can have HOA fees exceeding $1,200 per month with concierge services and premium amenities. TIC owners share building expenses proportionally, and these costs can be less predictable than condo HOA fees since there is no formal reserve fund requirement. Factor in these ongoing costs when using our Mortgage Calculator to assess affordability. San Francisco’s rent control ordinances also affect the investment calculus — if you plan to rent out your property in the future, understand that units built before 1979 are subject to rent control, which limits your ability to adjust rents to market rates.

First-Time Buyer Resources in San Francisco

  • DALP (Down Payment Assistance Loan Program): San Francisco’s Mayor’s Office of Housing offers deferred loans up to $500,000 for income-eligible first-time buyers purchasing below-market-rate units.
  • BMR (Below Market Rate) program: Inclusionary housing units sold at below-market prices through a lottery system administered by the Mayor’s Office of Housing.
  • CalHFA programs: State-level down payment assistance and below-market-rate mortgage programs available to San Francisco buyers.
  • Habitat for Humanity Greater San Francisco: Builds and sells affordable homes to qualifying low-income families through sweat equity partnerships.

Tips for San Francisco Homebuyers

Prepare for an extremely competitive market where multiple-offer situations remain common for desirable properties. Many successful buyers offer above asking price, waive contingencies, or provide large earnest money deposits. Understand the differences between condos, TICs, and co-ops before you begin your search, as each has distinct financing, ownership, and insurance implications that affect both your purchase process and long-term costs.

Research your target neighborhood’s microclimate — fog, wind, and sun exposure vary dramatically across just a few blocks in San Francisco. The Mission District and Potrero Hill tend to be warmer and sunnier, while the Outer Sunset and Richmond are significantly foggier. Always budget for the transfer tax, which can add $9,000–$15,000 on a median-priced property. If you are considering a TIC, verify whether the building is eligible for condo conversion in the near term, as conversion dramatically increases both the unit’s value and your financing options. Work with a real estate attorney experienced in San Francisco transactions, as the city’s disclosure requirements and rent control regulations add complexity beyond what you would encounter in most other markets.

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Frequently Asked Questions

What is the transfer tax on a San Francisco home purchase?
San Francisco uses a graduated transfer tax. For a typical $1,200,000 home, the rate is 0.75% ($3.75 per $500), costing approximately $9,000. Rates range from 0.50% on properties under $250,000 to 6.00% on properties above $25,000,000. The seller customarily pays the transfer tax in SF.
What is a TIC and how does it affect my mortgage?
A tenancy-in-common (TIC) is a form of shared ownership where multiple buyers each own an undivided interest in an entire building. TICs are common in San Francisco and typically sell at a 10%–20% discount to condos. Financing options include fractional TIC loans, which carry slightly higher interest rates than conventional mortgages.
How expensive is earthquake insurance in San Francisco?
Earthquake insurance through the California Earthquake Authority costs $1,000–$4,500 per year in San Francisco, depending on your home’s age, construction type, and selected deductible (5%–25% of dwelling coverage). Given SF’s proximity to the San Andreas and Hayward faults, this coverage is strongly recommended.
What are typical HOA fees in San Francisco?
Condo HOA fees in San Francisco average $500–$900 per month and often include earthquake insurance, water, garbage, and building maintenance. Newer luxury buildings can have fees exceeding $1,200 per month. Always review the HOA’s reserve fund and financial health before purchasing.
Are there affordable housing options in San Francisco?
San Francisco’s Below Market Rate (BMR) program offers units at reduced prices through a lottery system. The city’s DALP program provides deferred down payment loans up to $500,000 for income-eligible buyers. CalHFA also offers statewide programs with down payment assistance and below-market interest rates.