Sonoma County single-family homes remain firmly in seller’s market territory heading into fall. With only 3 months of inventory, down 26.3% from a year ago, and homes selling at a median of 99.8% of asking price, the county-wide picture is one of tight supply and steady buyer demand. The median sold price came in at $790,500 in September 2026, down 5.22% from July, with homes spending a median of just 39 days on the market before selling.
For context on how one of the county’s premium sub-markets is behaving very differently right now, see our Healdsburg Housing Market Report in September 2026, where months of inventory sit at 7.5, a genuine buyer’s market, compared to the county-wide 3 months here.
Two numbers define this market: 301 new pending contracts signed in September, and just 3 months of available supply. Even with new pending activity down 16.4% from July, demand is still outpacing what’s on the shelf.
What Are the Current Average Prices of Sonoma County Single-Family Homes?
The median sold price for Sonoma County single-family homes in September 2026 was $790,500, based on 326 MLS-recorded closed transactions — down 5.22% from July. Sellers received a median of 99.76% of their asking price. Public records show a similar median of $770,000 across 184 recorded sales.
| Segment | Median Price | # of Properties | Median $/Sqft |
|---|---|---|---|
| Active Listings | $1,030,000 | 908 | $585 |
| New Listings (Aug) | $833,800 | 438 | $523 |
| New Pending | $799,000 | 301 | $514 |
| Pending (all) | $857,000 | 120 | $513 |
| Sold (MLS) | $790,500 | 326 | $511 |
| Sold (Public Records) | $770,000 | 184 | $521 |
| Median Estimated Value | $804,440 | — | — |
Sonoma County single-family homes continue to show tight alignment between what sellers ask and what buyers pay: the $833.8K new-listing median and the $790.5K sold median sit close together, a sign the market is pricing accurately rather than negotiating hard in either direction.
The median estimated property value of $804,440, flat for the month but up a modest 0.3% year-over-year, is the steadier read on where Sonoma County single-family values actually stand, compared to the month-to-month swings in the sold-price figure.
Sonoma County Single-Family Homes Price Trends
A Seller’s Market Holding Its Position
Sonoma County single-family homes have held essentially flat in estimated value over the past 12 months (+0.3% YoY), even as the monthly sold-price figure moved around with a sample of 326 closings, per data reported by Realtors Property Resource®. For a look at how a neighboring wine country market compares, see Sonoma vs. Napa for a Second Home: Which Wine Country Market Wins in 2026?
Key trend data from the current report:
New listings came to market in September at a median of $833.8K, up 0.6% from July, with the count of new listings up 2.1% to 438 properties
Active inventory stands at 908 properties across the county, down 7.4% month-over-month, with a total listed value of $1.63B; median active list price is $1.03M, up 2.7% MoM
Months of supply at 3 is down 5.4% from July and down 26.3% year-over-year — this remains the single most important number in the report, keeping Sonoma County squarely in seller’s-market territory
Sold volume totaled $355.9M across 326 transactions, down 9.7% from July
Price Per Square Foot
MLS-recorded sold homes closed at $511/sqft in September, down 4.7% from July. Public records data shows $521/sqft across 184 transactions. Active listings carry a median of $585/sqft, and new listings came to market at $523/sqft — a tight spread that continues to reflect sellers and buyers agreeing on value.
Market Type: Seller’s Market
The RPR market-type indicator places Sonoma County single-family homes firmly in seller’s market territory with 3 months of supply. Homes are selling in 39 days at 99.8% of asking — well inside the range that favors sellers, even as the pace has cooled slightly from the sub-3-month readings earlier in the summer.
Inventory and Supply: The Core Constraint
Active single-family inventory across Sonoma County is 908 properties, down 7.4% from July, with a median of 62 days on market (up 3.3% MoM) and a total active value of $1.63B.
Pending activity cooled somewhat in August: 301 homes went under contract, down 16.4% from July, at a median pending price of $799K and a total pending volume of $301.2M — down 29.4% MoM. Even with that pullback, the pending-to-active ratio (301 new pendings vs. 908 active listings) works out to roughly 33%, still a meaningful share of listed homes finding a buyer in a single month.
The year-over-year inventory decline of 26.3% confirms the supply constraint driving this market is structural, not seasonal noise. Until new listing volume climbs well above the current 438/month pace, Sonoma County single-family homes are likely to stay tilted toward sellers.
What This Market Means for Buyers
The September 2026 data on Sonoma County single-family homes is direct: this remains a seller’s market county-wide, even with some cooling.
99.8% sold-to-list ratio means buyers should still expect to compete on well-priced homes rather than count on negotiating below asking
39-day median time on market for sold homes leaves a reasonable but not generous window for due diligence
301 new pendings in September (down 16.4% MoM) shows demand has softened slightly from earlier in the summer, which may open a bit more room for buyers than a few months ago
3 months of supply still means roughly one in three listed homes is going under contract in a given month
Buyers looking for more negotiating room within the county should note that not every sub-market matches this county-wide picture. Healdsburg, for instance, currently favors buyers with 7.5 months of supply
If you’re weighing where in Sonoma County to focus your search, First-Time Homebuyer in Healdsburg: What the 2026 Market Actually Looks Like breaks down one sub-market in detail.
What This Market Means for Sellers
Sonoma County sellers remain in a favorable position, though September’s data shows the edge softening slightly from earlier in the summer:
The 99.8% sold-to-list ratio means correctly priced homes are still selling at or very near asking price
39 days on market is the median for sold homes, a reasonable window that rewards accurate day-one pricing
New pending contracts fell 16.4% month-over-month, a signal worth watching if it continues into fall
Active inventory is down 7.4% MoM and 26.3% YoY; reduced competition remains a structural advantage for sellers
The sellers who continue to do well are the ones pricing at fair market value for their specific sub-market, not assuming the county-wide seller’s-market conditions apply uniformly everywhere. Healdsburg’s shift to a buyer’s market is a clear example of how much that can vary within Sonoma County. See Healdsburg Housing Market Report, September 2026 for that specific breakdown.
Sonoma County Single-Family Homes Stay a Seller’s Market, But the Edge Is Narrowing
September 2026 data shows Sonoma County single-family homes are still a seller’s market: 3 months of supply, a 99.8% sold-to-list ratio, and homes moving in a median of 39 days all point in the same direction. But the details show some cooling: new pending contracts fell 16.4% month-over-month, and the median sold price slipped 5.22% from July.
The bigger story this month is how much the county’s sub-markets have diverged. While Sonoma County overall still favors sellers, Healdsburg, one of its premium wine country pockets, has moved into a genuine buyer’s market with 7.5 months of supply. That gap is a reminder that a county-wide median can hide very different conditions block by block.
Whether you’re buying or selling anywhere in Sonoma County, understanding which dynamic applies to your specific sub-market is what actually determines your leverage. Contact Emily Martin for a read on where your area stands right now.
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Top Healdsburg Realtor Emily has called California home for over a decade and likes to think of herself as a California “native.” Learning from her mother, Linda K. Martin, a top-producing real estate agent for over 45 years, Emily has been immersed in real estate her entire life. As a homeowner in her early 20s in Manhattan’s Gramercy Park, followed by San Francisco, and now Healdsburg, Emily understands the intricacies of homeownership in highly sought-after regions such as Manhattan, San Francisco, Sonoma County, Napa Valley, and her beloved hometown of Healdsburg, California.
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