How interest rates actually move Bay Area home prices

Every time the Federal Reserve meets, my phone lights up. "Vladimir, did rates just drop, should I wait?" Or "rates went up, is the market about to crash?" The honest answer is that the relationship between interest rates and home prices is real, but it is slower and stranger than the headlines make it sound. Rates do not set prices. They set payments. And payments, plus the supply of homes for sale, are what actually move the market here in Santa Clara County.

Let me walk through the chain the way I explain it at a kitchen table, because once you see the mechanics you stop reacting to every headline.

First, the Fed doesn't set your mortgage rate

This trips up almost everyone. The rate the Fed moves is a short-term rate banks charge each other overnight. A 30-year mortgage is a long-term loan, and its rate tracks the 10-year Treasury yield far more closely than it tracks the Fed. Historically the 30-year fixed has run somewhere on the order of one and a half to two percentage points above the 10-year Treasury yield, though that spread widens when markets get nervous and has been unusually wide in recent years. The Fed influences the whole environment, but it does not directly cut your mortgage rate. That is why you sometimes see the Fed cut and mortgage rates barely move, or even tick up. The bond market had already priced it in, or it is worried about something else entirely. So when a client tells me the Fed is cutting and rates are about to plunge, I gently point out that the 10-year Treasury did not get the memo.

Rates change payments, and payments change what people can bid

Here is the part that matters for your wallet. When rates rise, the same loan costs more every month, so a buyer with a fixed budget can borrow less. When rates fall, that buyer can borrow more for the same payment. A common rule of thumb is that roughly every one percentage point move in rates changes buying power by about ten percent. Treat that as a rough guide, not a law of physics, but it is directionally right and it is large. At Bay Area price points, a point of rate movement is the difference between qualifying for one tier of home and the next one down.

This is also why a rate change and a price change can feel identical to a buyer. A modest drop in the rate can lower your monthly payment about as much as a meaningful cut in the purchase price. So a buyer waiting for prices to fall while rates are falling may already be getting the relief they wanted, just through the payment rather than the sticker. If you want to see what a given rate does to your number on a real property, start with your own figures on the home value page rather than a national average that has nothing to do with this county.

Why prices don't just fall when rates rise

In a textbook, higher rates shrink what buyers can pay, so prices drop. In the real Bay Area, two things blunt that. First, this is a supply-starved market. We do not build enough, and demand from people who want to live near where the work is does not evaporate because of a rate move. Second, and this is the big one, higher rates also choke off the supply of homes for sale. That is the lock-in effect, and it is the most underrated force in this market.

The lock-in effect, or why your neighbor won't sell

A large share of homeowners are sitting on mortgages from the low-rate years, many under four percent. Selling means giving up that cheap loan and financing the next home at today's rate, so a lot of owners simply stay put. Researchers at the Federal Housing Finance Agency studied this directly and estimated the lock-in effect prevented more than a million home sales nationally as rates climbed after 2022. Their finding is the counterintuitive part worth reading twice: by freezing inventory, the lock-in put net upward pressure on prices, because the supply that disappeared outweighed the dampening effect of higher rates. Higher rates were supposed to cool prices. By freezing the homes that would have come to market, they also propped prices up. The two effects fight each other, which is exactly why prices here have been sticky instead of falling the way the rate-only story predicts.

Higher rates were supposed to cool prices. By also freezing the supply of homes for sale, they quietly propped prices up. That tug-of-war is why our market stays sticky.

What this means if you're buying

Stop trying to time the bottom on rates. Nobody, including the people who do this for a living, calls it reliably. What you can do is buy a payment you are comfortable with at today's rate, and refinance later if rates fall. You marry the house and date the rate. The risk in waiting is that if rates drop a lot, the locked-up owners start listing, but the buyers who were also waiting all come back at once, and competition heats the prices right back up. The window where rates have fallen but the crowd has not returned yet is usually short. If you are getting your financing in order, my buyers page lays out how I run that process so you are ready to move when your home shows up.

What this means if you're selling

The flip side of lock-in is that when inventory is thin, well-prepared listings stand out more, not less. Fewer homes are competing for the serious buyers who are still active. But the fact that buyers can afford less at higher rates is real, so pricing to the current payment environment matters more than chasing what your neighbor got two years ago at a three-percent rate. The buyers shopping today are doing the monthly-payment math, not the 2021 math.

• Mortgage rates follow the 10-year Treasury, not the Fed's headline rate, so a Fed cut does not guarantee a lower mortgage rate.
• Rates move payments first. A one-point change shifts buying power by roughly ten percent as a rule of thumb.
• Higher rates cut demand but also freeze supply through lock-in, and those two forces partly cancel out.
• Trying to time the rate bottom usually backfires because returning buyers reheat prices.
• Local supply and demand drive our prices far more than any national rate headline.

None of this is tax or financial advice, and your situation deserves a real conversation, with your lender and your CPA in the room when the numbers get specific. But the framework holds. Watch payments and inventory, not just the rate number on the news. If you want to pressure-test what move makes sense for your own situation, that is exactly the kind of thing I work through on a pre-listing strategy review or a buyer planning call.