What It Really Costs To Own A Home In San Francisco

Buying in San Francisco can feel like you are planning for one number while the real monthly cost is hiding in five others. If you are focused only on the mortgage payment, you could end up underestimating what it really takes to own comfortably in this market. The good news is that once you understand the major cost buckets, you can budget with much more confidence. Let’s dive in.

Why total ownership cost matters

San Francisco starts from a high price point. With a median home sale price of about $1.7 million last month, even routine ownership expenses can add up fast.

That is why your budget should go beyond principal and interest. A realistic ownership plan also includes property taxes, insurance, possible mortgage insurance, HOA dues if applicable, utilities, maintenance, repairs, and any other recurring property-related charges.

Property taxes are a major monthly cost

In San Francisco, property tax is often the biggest predictable recurring cost after your mortgage. For fiscal year 2025 to 2026, the combined property tax rate is $1.18268325 per $100 of assessed value.

On a $1.7 million home, that works out to about $20,100 per year, or roughly $1,700 per month, before exemptions. For many buyers, that one line item alone changes what feels affordable.

Why the seller’s tax bill can mislead you

One of the most common budgeting mistakes is using the seller’s current tax bill as your estimate. In California, Proposition 13 generally limits annual assessed value growth, but a change in ownership usually resets the property to current market value for tax purposes.

That means the home may be reassessed after you buy it. If the seller has owned the property for many years, their tax bill could be far lower than yours will be after closing.

Supplemental tax bills can show up after closing

San Francisco’s assessor also notes that new homeowners may receive supplemental tax bill notices after purchase. These are meant to capture the difference between the previous assessed value and the new market value tied to the sale.

Those bills are mailed within about 60 days of the supplemental notice. If you are stretching to buy, this is an important cash flow item to plan for early.

Important tax dates to know

San Francisco’s annual property tax bill covers July 1 through June 30. Installments are due December 10 and April 10.

Some owners pay taxes through an escrow account with their lender, while others pay directly. Either way, the cost is still part of your monthly ownership picture.

Insurance needs a real quote

Insurance is another cost that should never be guessed. If you are getting a mortgage, homeowners insurance is generally required by the lender.

In California, standard homeowners insurance policies do not cover earthquake damage. Earthquake coverage is a separate choice with a separate premium, and the cost can vary based on location, rebuild cost, construction type, deductible, and coverage selections.

Why insurance costs vary so much

Two homes with similar prices can still have different insurance costs. The premium can change based on the structure itself, the replacement cost, and the specific coverage you choose.

That is why a San Francisco buyer should treat insurance as a quote-driven budget item, not a rough guess. Before you get too far into a purchase, it helps to request written numbers so you know where your real monthly total stands.

HOA dues can change the math quickly

If you are buying a condo, townhome, or another HOA property, dues can be a major part of your carrying cost. Recent reporting based on Realtor.com data put the San Francisco metro median HOA fee at $502 per month in 2025.

That is not a small add-on. It can materially affect your monthly budget, especially when paired with taxes, insurance, and your mortgage payment.

Monthly dues are only part of the story

The dues amount is important, but it is not the whole picture. Buyers should also review the HOA budget, reserve study, and any recent or planned special assessments.

Reserve funds are meant to cover long-term repair and replacement of common-area components. If reserves are weak, owners may be more exposed to future assessments.

Utilities and city charges add up too

Utilities and local charges are easy to overlook because they may seem minor compared with a mortgage. In practice, they can add several hundred dollars to your monthly ownership cost.

For a San Francisco buyer, these are some of the public benchmark numbers worth planning around:

• Water and sewer: average single-family bill of $160.75 per month in fiscal year 2024 to 2025
• Refuse: current monthly base charge of $19.75 per dwelling unit in rate year 2026, plus an $8.25 monthly volume charge for the default 16-gallon cart service
• Electricity: average non-CARE bundled residential electric bill of $203.54 for 500 kWh
• Rent Board fee: $59 per dwelling unit for tax year 2025 to 2026, billed directly by the Rent Board, with some owner-occupied units that are not rented potentially qualifying for exemption

These are planning benchmarks, not guaranteed bills. Your actual costs will vary based on the property, service levels, and usage.

Future utility changes are worth watching

Utility costs do not always stay flat. SFPUC has proposed increases effective July 1, 2026 that would add about $21 per month in fiscal year 2027 and $23 per month in fiscal year 2028 to the average single-family water and sewer bill if approved.

That does not mean you should avoid buying. It simply means your ownership budget should have some breathing room.

Maintenance is real even without a crisis

Many buyers plan carefully for the down payment and mortgage, then underestimate maintenance. Even if your home is in good condition on day one, ownership comes with ongoing repair and upkeep costs.

Maintenance can vary widely depending on the home’s age, condition, size, and systems. A condo may shift some responsibilities to the HOA, while a single-family home often leaves more of the upkeep directly on you.

A smart budget includes a maintenance reserve

You may not need to spend on repairs every month, but it is wise to budget as if you will. A maintenance reserve helps you handle the normal reality of ownership without turning every repair into a financial surprise.

This matters even more in a high-cost market like San Francisco, where labor and replacement costs can feel expensive fast.

A practical San Francisco cost example

Using current public figures, a $1.7 million San Francisco home comes with about $1,700 per month in property tax. Add roughly $397 per month for water and sewer, refuse, electricity, and the Rent Board fee combined, and your non-mortgage, non-insurance subtotal is already around $2,100 per month.

If that property is a condo with the San Francisco metro median HOA fee, the subtotal rises to about $2,600 per month before insurance, maintenance, or mortgage payments. That example shows how quickly the true carrying cost can move beyond the number many buyers first focus on.

What is not included in that example

That subtotal does not include homeowners insurance. It also does not include earthquake coverage, maintenance reserves, or mortgage insurance if your down payment is less than 20%.

In other words, your real monthly cost could be meaningfully higher. This is exactly why pre-approval should be paired with a full carrying-cost estimate.

How to budget before you remove contingencies

If you are serious about buying in San Francisco, the safest move is to gather written numbers before you remove contingencies. This gives you a cleaner picture of your true monthly obligation.

A practical checklist includes:

• Written lender estimate for principal, interest, taxes, and insurance
• Mortgage insurance estimate if your down payment is under 20%
• Insurance quotes for homeowners coverage and any optional earthquake coverage you want to consider
• HOA dues, budget documents, reserve information, and any known special assessments for HOA properties
• Property tax information based on the likely reassessed value after closing
• Utility estimates based on the property type and your expected usage

This extra homework can save you from surprises later. It also helps you make decisions from a place of clarity instead of stress.

Why local guidance matters

San Francisco ownership costs are not just high. They are layered. Taxes, insurance choices, HOA details, city charges, and maintenance all interact with your mortgage payment to shape what the home will really cost month to month.

That is why buyers benefit from a local guide who understands how these numbers show up in the real world. When you are comparing condos, townhomes, and single-family homes, the details behind the listing price matter just as much as the price itself.

If you want help pressure-testing the full cost of ownership before you make a move, connect with Fadi Shamieh. You will get clear, practical guidance grounded in the Bay Area market so you can buy with more confidence.

FAQs

What does it cost to own a home in San Francisco besides the mortgage?

• In addition to your mortgage, you should budget for property taxes, homeowners insurance, possible mortgage insurance, HOA dues if applicable, utilities, refuse, maintenance, repairs, and certain local charges like the Rent Board fee where it applies.

How much are San Francisco property taxes on a $1.7 million home?

• At the current combined city property tax rate for fiscal year 2025 to 2026, a $1.7 million home works out to about $20,100 per year, or roughly $1,700 per month, before exemptions.

Why is the seller’s property tax bill not a good estimate in San Francisco?

• Because a change in ownership usually resets the property to current market value for tax purposes, the seller’s lower assessed value may not reflect what you will owe after closing.

How much are HOA fees in the San Francisco metro area?

• Recent reporting based on Realtor.com data put the San Francisco metro median HOA fee at $502 per month in 2025, though the actual amount depends on the building and association.

Do San Francisco buyers need earthquake insurance?

• Standard homeowners insurance in California does not cover earthquake damage, so earthquake coverage is a separate decision and a separate premium. Buyers should get quotes and decide based on their property and risk tolerance.

What utility costs should San Francisco homebuyers budget for?

• Public benchmarks include average monthly water and sewer costs, refuse charges, electricity, and in some cases the Rent Board fee, all of which can add several hundred dollars per month before maintenance or HOA dues.

How should San Francisco buyers estimate the true monthly cost before closing?

• The safest approach is to collect written estimates from your lender, insurer, HOA, and relevant tax sources before removing contingencies so you can review the full carrying cost, not just the mortgage payment.