Marin Market Update – August 28, 2026: Warsh Hammers Bonds, 30-Year Rate Closes at 6.66%

Friday was ugly for bonds. By the time markets closed, the 30-year fixed had climbed to 6.66% — sixteen basis points higher than where it stood at midday, before the full weight of Warsh’s Jackson Hole remarks and a surprise inflation print combined to hammer Treasury yields into the close.

If you have a Marin purchase in process, here’s exactly what happened today and what it means for your loan.

Closing Rates — Friday, August 28, 2026

• 30-year fixed: 6.66% (Bankrate/Optimal Blue, primary residence)
• 15-year fixed: 5.99%
• 5/1 ARM: 6.22% APR
• FHA 30-year: ~5.60%
• VA 30-year: ~6.20%

To put the week in context: 30-year rates started August 24 at 6.72%, dipped through mid-week, then reversed sharply today. We closed the week near the top of the monthly range of 6.54%–6.72%. Not where anyone wanted to end a Friday.

Two Things Hit at Once

The bond selloff today had two drivers.

The first was Warsh. His Jackson Hole speech this morning — his first as Fed Chair, on his 100th day in office — left no ambiguity about where he stands. “We must be confident that underlying inflation is moving to our objective, clearly and at sufficient speed,” he said in the prepared text. “Otherwise, we have work to do.” He also made clear that “short-term interest rates are the predominant tool” to get there, and called out the Fed directly: “The responsibility for 65 months of sustained, elevated inflation sits squarely with the central bank.”

That is a Fed chair telling the market that rate hikes are back on the table. He also repeated his refusal to give forward guidance, which makes the bond market uneasy — investors can’t model a Fed that won’t tell them how it’s thinking.

The second hit came from the inflation data. The July PCE report — the Fed’s preferred measure — came in hotter than expected. Monthly PCE rose 0.2% against estimates of 0.1%, and the annual rate came in at 3.7% versus the 3.6% forecast. That number matters because Warsh just told the room that 2% is a “firm, fixed target.” At 3.7%, the Fed has a lot of work left.

The 10-year Treasury yield closed at 4.73%, up 6 basis points on the day. The 30-year Treasury touched 5.3% earlier this week — a level not seen since 2007. Mortgage rates track these yields closely, which is exactly why the 30-year fixed is sitting at 6.66% to close the week.

September vs. December — What Markets Now Expect

Markets are pricing the September 16–17 FOMC meeting at roughly a 35% chance of a hike — meaningful, but not the base case. Where the real probability has shifted is December: traders are now pricing a rate hike before year-end at better than 70%. Warsh won’t telegraph his next move, but the direction is clear.

Here’s the important nuance for mortgage borrowers: a Fed hike in December does not automatically push your 30-year fixed higher. The Fed controls short-term rates. What moves your mortgage is the 10-year Treasury, and that’s already reflecting a lot of the expected tightening. If the December hike is priced in and inflation data comes in softer between now and then, we could actually see the 10-year stabilize or pull back. The risk is if inflation re-accelerates — then the bond market sells off further and mortgage rates climb toward 7%.

What This Means for Marin Buyers Right Now

On a $1.5M loan, today’s 6.66% rate works out to roughly $9,630/month in principal and interest. At this morning’s 6.50% rate, that same loan was about $9,474/month. The difference is $156/month — or about $1,875/year — entirely because of what happened in the bond market today. That is how fast things can move when the Fed is in play.

Marin inventory was running around 475 homes earlier this month with a 13-day median sale time and prices near $1.865 million. The market hasn’t softened to the point where you’re negotiating big rate-related discounts — well-priced homes are still moving. But buyers in the mid-market range are feeling the squeeze.

My advice going into next week: if you are under contract with a closing date in the next 30–45 days, lock today or Monday morning before markets open. The next major data points are the jobs report (September 4), CPI (September 11), and the FOMC decision (September 16). Any one of those can spike yields. You do not want to be floating through all three without a lock in place.

If you are still shopping, this environment actually creates an opportunity to negotiate seller concessions — rate buydowns, closing cost credits — that weren’t available six months ago. A seller-paid 1-point buydown on a $1.5M loan drops your rate from 6.66% to roughly 6.41% for the life of the loan. That’s worth asking for.

The Week That Was

Monday opened at 6.72%, rates eased mid-week as the market waited for Warsh, and then today gave it all back plus a little more. The 30-year Treasury yield hitting 5.3% — the highest since 2007 — tells you something important about where the market thinks rates are going structurally. This is not a blip. The era of 3% mortgages is not coming back, and even a return to 6% looks like it requires either a recession or a dramatic pivot from Warsh that nothing today suggests is coming.

Plan for 6.5%–7% through the end of the year. Buy the house that makes sense at those numbers. That’s the honest read.

Questions about locking strategy or how to structure a buydown for your specific purchase? Call us at (800) 239-1103.

Closing rate data: Bankrate/Optimal Blue (OBMMI) via MortgageDaily. Treasury yield data: Trading Economics. PCE data: BEA July 2026 release. Warsh speech text: Federal Reserve Board, August 28, 2026. Fed probability data: CME FedWatch.

🗺️ Marin City-by-City Snapshot

• Tiburon — Waterfront and view homes still command their premium in the $3M–$5M+ range, but off-water listings are negotiating for the first time in years.
• Belvedere — Thin as always; a handful of listings, mostly jumbo, and buyers here are far less rate-sensitive than the rest of the county.
• Mill Valley — The busiest submarket in Marin right now, with a median around $2.55 million and more genuine choice than buyers have had in a long time.
• Sausalito — Condos and houseboats sit longer than hillside single-family; financing for floating homes stays specialty, so line up your lender before you write.
• Corte Madera — Steady and family-driven; well-priced homes near the schools still move quickly.
• Larkspur — Downtown and Greenbrae-adjacent inventory has loosened modestly, with more room to negotiate on the older housing stock.
• Kentfield — School-district demand keeps a firm floor under prices even as days on market stretch out.
• Greenbrae — One of the better value plays in central Marin right now if you can be flexible on updates.
• San Rafael — The county’s volume leader at roughly $1.2M–$1.8M, and expanded inventory is creating real openings for move-up buyers.
• San Anselmo — Charming older homes; budget for inspections and expect sellers to entertain repair credits.
• Fairfax — Most affordable entry point in central Marin, and the first-time buyer pool here is the most rate-sensitive in the county.
• Ross — Very few listings, very high price points, and almost every deal is a jumbo or portfolio conversation.
• Novato — The most inventory in the county and the most negotiating room; strong candidate for a seller-paid rate buydown.
• Marinwood / Terra Linda — Mid-century inventory with solid value per square foot; renovation financing fits well here.
• Strawberry — Condo and townhome supply where HOA review can make or break the loan, so check it early.
• Stinson Beach / Bolinas — Coastal fire-zone properties where insurance drives the deal; specialty lending required, and get an insurance quote before you go into contract.
• Point Reyes / Inverness / Nicasio — Rural west Marin with acreage, wells, and septic in play; specialty loans, not standard conforming, and slower to structure.

💡 What Should Marin Buyers Do Right Now?

• Lock if you’re in contract. With hike odds near two-thirds and CPI landing September 11, the risk between now and the FOMC meeting skews higher, not lower. Floating into that is a gamble, not a strategy.
• Ask for a seller-paid buydown instead of a price cut. At 3.2 months of inventory, sellers are listening — and a seller-funded 2-1 buydown usually improves your payment more than an equivalent price reduction, for the same money out of their pocket.
• Use the leverage on inspections and credits. Seven weeks on market means you can write a normal offer with normal contingencies. That wasn’t true in Marin two years ago.
• Get pre-approved before you tour, especially west of the ridge. Fire-zone, acreage, and floating-home properties need lenders who actually do those loans. Learning that after you’re in contract costs you the house.

📞 Talk to Michael Directly

We’re a small family-owned brokerage in Tiburon. No call center, no phone tree, no getting handed off to whoever picked up. You call, I answer, and I’ll tell you straight whether the numbers work.

Call: (800) 239-1103
Cell: (310) 849-9124

Michael G. DiVita, Broker of Record | CA DRE #01372066 | NMLS #241655
DiVita Home Finance, Inc. | CA DRE #01818285 | NMLS #323700

Rates and market data reflect national averages published on September 4, 2026, and are for informational purposes only. They are not a commitment to lend or a quote. Your actual rate depends on credit, loan amount, property type, occupancy, and other factors.