Is Now a Good Time to Buy or Sell in the Bay Area? Here's What to Know This Indian Summer

I have sellers in the Sunset getting their houses ready to list right now. When we sat down to map out the calendar, they asked me the same question I get from almost everyone in September.

"Should we do it now, or wait until spring?"

I never love giving the honest answer, because the honest answer is that it depends on your situation more than it depends on the season. But I also think people deserve a real look at what is actually happening on the Peninsula, rather than another post telling them it is always a great time to buy. So here is where things stand as of mid-September, what our Indian Summer window tends to look like, and what I would tell you if you were sitting across from me at my office in South San Francisco.

Where the market actually is right now

A few numbers worth knowing before you make any decision:

• The 30-year fixed rate averaged 6.76% the week of September 10, per Freddie Mac's weekly survey. The 15-year came in at 6.09%. Both ticked up slightly from the week before. For context, the 30-year averaged 6.35% at this point last year, so borrowing costs are modestly higher than they were a year ago, not lower.

• California's median price was $887,680 in July, essentially flat year over year at +0.3%, according to the California Association of Realtors.

• The nine-county Bay Area median was $1,285,000, down 1.2% from a year ago. The region as a whole has cooled slightly.

• San Mateo County's median for existing single-family homes was $2,210,000 in July, up 5.2% year over year. Median time on market was 13 days, with 1.5 months of unsold inventory.

• San Francisco County's single-family median was $2,050,000, with 22.5 days on market and 1.0 months of inventory.

Two things I want to be straight with you about, because most posts quoting these numbers are not.

First, C.A.R.'s county figures cover existing single-family detached homes. They exclude condos and townhomes, which are a large share of what actually trades in San Francisco. So "the San Mateo median is $2.21M" is not the same as "a typical San Mateo home costs $2.21M."

Second, San Francisco's July number technically shows a 25.2% year-over-year jump, and you will probably see that stat repeated. I am not going to lean on it, because San Francisco's single-family sales were down 10.3% year over year in the same report. When volume drops and the mix of what sells shifts toward higher-end homes, the median moves without the value of any individual home moving. C.A.R. says as much in their own methodology note: "Movements in sales prices should not be interpreted as changes in the cost of a standard home." If your neighbor tells you San Francisco is up 25% this year, that is not what the data means.

What I am comfortable saying is this: inventory across San Mateo and San Francisco is roughly 1 to 1.5 months, versus 3.4 months statewide, and San Mateo homes are still going in about 13 days. That is a tight, quick market by any measure, and it is a meaningfully different picture than the cooling regional headline suggests.

What Indian Summer does to our market

September and October have their own rhythm here, and it works differently depending on which side of the table you are on.

For buyers, this is one of the better windows of the year. Redfin's August analysis of seasonal pricing found that "late September is the sweet spot for buyers to get a deal" in San Francisco, as well as in Houston, Las Vegas, and Washington, DC (Redfin, August 21, 2026). Their reasoning is simple: sellers listed in spring or early summer who still have not sold tend to be the most open to a price reduction or credits. Those are the listings I watch for my buyer clients every fall. Worth noting that Redfin's finding is about the metro overall, not a guarantee about any specific home or neighborhood.

For sellers, the seasonal math is a little less friendly, and I would rather tell you that upfront. ATTOM's 2026 study examined 52 million sales from 2015 through 2025 and found that September and October have the lowest seller premiums of any month, at 8.0% and 7.9%, compared to 10.7% in March. Premium here means how far above a home's automated valuation estimate it actually closed, so it is a rough measure of seasonal negotiating strength.

That is national data averaged over eleven years, and a Peninsula market with barely a month of inventory is its own animal. A three-point average spread does not mean your house sells for less. It means the seasonal tailwind is smaller, so preparation and pricing carry more of the weight.

There is a real upside for sellers, too. Fall buyers are not window shopping. The people touring homes in October have usually been looking since March; they are pre-approved, tired, and want to be in before the holidays. Fewer showings, more serious people.

The honest pros and cons

Buying this fall

Working in your favor: less competition than spring, more negotiating room on listings that have been sitting, sellers with real motivation as the year winds down, and rates that at least stopped surprising everyone.

Working against you: our inventory is still tight, so good listings will not sit long enough for you to sleep on them. And the Peninsula has not softened the way the broader Bay Area has, so do not walk in expecting deep discounts on fresh listings.

Selling this fall

Working in your favor: your buyer pool is small but serious, competing inventory drops off after October, and San Mateo pricing is holding up well against the regional trend.

Working against you: seasonal premiums historically run lower, showings slow down once daylight saving ends in early November, and buyers this year are rate-conscious and picky about condition.

If you're buying

• Get fully underwritten, not just pre-qualified. In a 13-day market, your financing needs to be the strongest part of your offer.

• Ask me to pull days on market before you write. A listing at day 45 is a different negotiation than a listing at day 5, and that difference is where fall buyers make their money.

• Do not try to time the bottom on rates. Forecasts have been wrong in both directions all year. Buy the house you can comfortably carry at today's rate, and treat any future refinance as a bonus rather than the plan.

• Look at what is left over from the spring season. That is where the flexibility lives.

• If you are relocating from out of the area, add two weeks to whatever timeline you have in mind. Touring remotely and getting a local lender lined up takes longer than people expect, and at the speed homes are moving here, that lag is what costs you the house.

If you're selling

• Price it right the first week. Fall does not forgive an ambitious list price the way spring does. The overpriced spring listings are exactly what my buyer clients are hunting right now, and you do not want to be one of them.

• Spend on prep, not on hope. Paint, landscaping, and a pre-inspection usually do more for your net than an extra thirty days on market.

• Shoot photos while the light is still good. Our September light is the best of the year, and by November, everything looks gray.

• Talk to me before you decide to wait for spring. Sometimes waiting is right. But you would be listing into more competition, and holding a property for six months is not free.

What I actually think

Timing the market is a smaller lever than most people believe. How long you plan to hold the property, what your rate looks like, and how well the home is priced and prepared will matter far more to your outcome than whether you transacted in September or April. The people I have watched do best were not the ones who guessed right on a month. They were the ones who were ready when the right property showed up.

If you are somewhere between "maybe" and "not yet," that is a normal place to be, and it is a good time to talk it through before the fall window closes.

Let's talk it through. I'll pull real comps for your street, run your actual numbers, and give you a straight answer about whether now or spring makes more sense for you. Schedule a consultation with me, or text me directly at 415.480.7738.