What a Fed Rate Hike Actually Costs a San Francisco Buyer
The Federal Reserve raised the federal funds rate by a quarter point on September 16, to a target range of 3.75 to 4.00 percent. The vote was 12 to 0. It was the first Fed rate hike since 2023, and the committee’s statement described the move as support for a timelier return to its 2 percent inflation goal.
Most of what has been written since treats this as a large event for buyers. In dollars, it is a small one. There is a number in last month’s San Francisco sales data that is several times larger, and almost nobody is writing about it this week.
The short version
- The move costs about $145 a month on a typical San Francisco loan. Freddie Mac’s survey published September 17 put the thirty year fixed at 6.95 percent, up from 6.76 percent the week before.
- The Fed does not set mortgage rates. The FOMC sets an overnight bank lending rate. A thirty year mortgage is priced off the ten year Treasury yield plus a lender spread.
- San Francisco closed 345 residential sales in August at a median closed price of $1,430,000, with a median of 14 days on market. There are 692 active listings as of September 17, about two months of supply at August’s pace.
- The 243 homes that sold within thirty days had a median asking price of $1,295,000 and a median closing price of $1,580,000. That $285,000 gap is what a buyer in this market is actually bidding against, and it is more than five times what the rate increase costs across the entire life of the loan.
What the Fed rate hike costs, in dollars
San Francisco’s conforming loan limit for a single unit in 2026 is $1,249,125, against a national baseline of $832,750. Freddie Mac’s survey prices conventional conforming loans at twenty percent down, so the figures below stay inside that ceiling, where the rate quoted actually applies.
| Loan amount | At 6.76% | At 6.95% | Monthly difference |
| $1,000,000 | $6,493 | $6,619 | $127 |
| $1,144,000, twenty percent down on the city median | $7,428 | $7,573 | $145 |
| $1,249,125, the conforming ceiling | $8,110 | $8,269 | $158 |
Principal and interest only. On that $1,144,000 loan the move costs $145 a month, $1,741 a year, and $52,242 across thirty years if the rate is never touched again.
Above roughly $1.56 million in purchase price at twenty percent down, a San Francisco buyer crosses into jumbo. Jumbo is a separate product with its own pricing, its own down payment expectations, and its own underwriting, and the Freddie Mac number quoted everywhere this week does not cover it. Any buyer above that line should be working from a quote, not from a survey. Given what San Francisco costs, that is most of this market.
Why the Fed rate hike did not move mortgage rates a quarter point
The FOMC sets the federal funds rate, which governs overnight lending between banks. A thirty year mortgage is priced off the ten year Treasury yield and the spread lenders require above it. The two are connected by expectation, not by mechanism.
Most of this increase was priced in weeks ago. Bonds began repositioning after Chair Kevin Warsh spoke at Jackson Hole on August 28, and Freddie Mac’s thirty year average had already climbed from 6.71 percent in early September before the committee met. The decision largely confirmed what the market had assumed.
The ten year Treasury climbed back to 5 percent on the afternoon of the decision, as Warsh emphasised continued inflation risk, and eased back the next session, on September 17. That is the rate that matters to a mortgage, and it moves on what the committee is expected to do next rather than on what it has just done.
What San Francisco actually did in August
Three hundred and forty five residential sales closed in the city, at a median closed price of $1,430,000 and a median of 14 days on market. In the segment above $3 million, 36 sales closed at a median of $3,967,500 and a median of 12 days. There are 692 active residential listings as of September 17, roughly two months of supply against August’s closing pace.
The number that costs more than the rate
Seventy percent of last month’s sales, 243 of them, closed within thirty days of listing. Those 243 homes carried a median asking price of $1,295,000 and closed at a median of $1,580,000.
Two hundred and eighty five thousand dollars, between the number on the listing and the number on the contract. Against $145 a month on the loan.
That is the real shape of this market, and it is why a week spent reading Fed coverage is a week spent on the smaller variable.
What the days-on-market table does and does not show
Broken down by how long each sale sat:
| Days on market | Sales | Share | Sold vs list |
| 0 to 30 days | 243 | 70% | 120.33% |
| 31 to 60 days | 43 | 12% | 102.56% |
| 61 to 90 days | 24 | 6% | 97.12% |
| 91 to 120 days | 13 | 3% | 101.42% |
| Over 120 days | 22 | 6% | 97.00% |
The obvious reading is that sitting on the market costs a seller twenty three points of list price. That reading is wrong, and it is worth saying so plainly because a great deal of agent content is built on it.
The two ends of the table are not the same properties. Those 22 sales that took more than 120 days had a median asking price of $584,500, a median of one bedroom, and a median of 847 square feet. Compare that with the 243 fast sales, at a median asking price of $1,295,000, two bedrooms, and 1,379 square feet. The slow group is not the fast group after a delay. It is a different slice of the housing stock, at less than half the price and roughly sixty percent of the size.
So the table describes what is selling quickly in San Francisco, which is larger, more expensive, better prepared inventory. It does not, on its own, prove what any individual home loses by sitting. Preparation and pricing genuinely do matter, and the first thirty days genuinely is where the attention concentrates, which is the argument I made at length in what it actually takes to sell above asking in San Francisco. The honest version of the claim here is the fast group’s own numbers, which need no comparison to anything: those homes listed at a median of $1,295,000 and closed at a median of $1,580,000.
What this means if you were planning to buy
The case for waiting is weaker this week than it was last week, not stronger.
The rate move is $145 a month on a typical loan here. That is the entire price of being wrong about timing. Set against it: San Francisco went into September with roughly two months of supply and a median of fourteen days on market, which is not a market that rewards patience with a discount. And the committee’s own statement points at inflation rather than at relief, so waiting for cheaper money is a position on what the Fed does next.
None of which is a reason to hurry. It is a reason to stop treating the rate as the decision. The decision is which property, at what price, and with what understanding of why it is available.
Where the room actually is
If seventy percent of this market clears inside a month at well above asking, the room is in the other thirty percent, and it is specific rather than general. Some of those listings are sitting because of price. Some because of preparation. Some because of something structural that no price fixes, and a buyer needs to know which before writing an offer rather than after.
Telling those apart is the work. It is not found by watching rate announcements, and the Fed’s decision does not change any of it.
Frequently asked questions
How much did the Fed raise rates in September 2026?
The FOMC raised the federal funds rate by 25 basis points on September 16, 2026, to a target range of 3.75 to 4.00 percent, in a unanimous 12 to 0 vote. It was the first increase since 2023.
Does a Fed rate hike raise mortgage rates?
Not directly and not one for one. The federal funds rate is an overnight bank lending rate. Thirty year mortgage rates track the ten year Treasury yield plus a lender spread, and they move on expectations ahead of a decision rather than on the decision itself. In the week of this hike, Freddie Mac’s thirty year average rose from 6.76 to 6.95 percent, a nineteen basis point move against a twenty five basis point policy change.
What does the increase cost a San Francisco buyer per month?
About $127 a month per million borrowed. On a $1,144,000 loan, which is twenty percent down on the city’s August median closed price, about $145 a month.
What is the conforming loan limit in San Francisco for 2026?
$1,249,125 for a single unit, against a national baseline of $832,750. At twenty percent down that covers a purchase price up to roughly $1,561,000. Above that a buyer is in jumbo territory, which is priced separately from the conforming rates quoted in national coverage.
What is the San Francisco housing market doing right now?
San Francisco closed 345 residential sales in August 2026 at a median closed price of $1,430,000 and a median of 14 days on market, with 692 active listings as of mid September, roughly two months of supply. The 243 sales that closed within thirty days had a median asking price of $1,295,000 and a median closing price of $1,580,000.
Where to start
If you are buying in San Francisco, the useful conversation this week is not about the Fed. It is about which properties are actually available, which ones have been sitting and why, and what your number does at 6.95 percent rather than at the 6.58 percent Freddie Mac was reporting in late July. If you are on the other side of it and weighing a sale, the same data has a different set of implications for your price.
A fair amount of what trades in this city is never on a portal at all.
No obligation, and no pressure to buy.
See what is available off-market in San Francisco
Sources. Federal Reserve FOMC statement, September 16, 2026. Chair Kevin Warsh’s keynote remarks at the 2026 Jackson Hole Economic Policy Symposium, August 28, 2026. Mortgage rates from Freddie Mac’s Primary Mortgage Market Survey, weeks of July 23, September 3, September 10 and September 17, 2026; the survey covers conventional conforming loans at twenty percent down and excludes jumbo. 2026 conforming loan limit values per the Federal Housing Finance Agency, announced November 25, 2025. San Francisco figures from the San Francisco Association of Realtors MLS, pulled September 17, 2026: residential property type, city of San Francisco, closed status, 1 to 31 August 2026, 345 sales, with the 0 to 30 day and 121 or more day cohorts queried separately; active residential listings as of the same date, 692. Payment figures calculated on a thirty year fixed amortisation, principal and interest only.
Sale to list percentages are averages for each days-on-market group as reported by the MLS.
Market commentary only. Not lending, tax or investment advice.
Jason Hoffman is a luxury property specialist with Compass in San Francisco, California. DRE 01865372.