September 2026 in Napa County: A Closer Look at the Market

A look at September's closings and the full third quarter, when county sales finished 3 percent below last year and homes that sold averaged 78 days on market.

September wraps up the third quarter, so this month's update looks at both. From July through September, Napa County closed 331 homes, 3% fewer than the same quarter last year, and homes that sold averaged 78 days on market, compared with 85. According to BAREIS MLS, September on its own brought 97 closed sales, down from 120 a year earlier, at an average sold price of $1,070,177, 9% below last September.

Homes that closed in September averaged 74 days on market, compared with 110 a year earlier. You can view the full September 2026 Napa County Real Estate Snapshot here and the Third Quarter 2026 Snapshot here.

County Overview

September at a Glance

Source: BAREIS MLS, Napa County residential, September 2026 compared to September 2025.

Million Plus

The Segment Above $1 Million

Homes that sold for $1 million or more accounted for 31 closings in September, down 21% from 39 a year earlier. The average sold price in that segment was $2,184,750, 10% below last September, and the average price per square foot was 12% lower at $768.

Homes above $1 million that sold in September averaged 75 days on market, compared with 118 a year earlier.

By Town

Where the September Sales Happened

The City of Napa accounted for 71 of the county's 97 closed sales, down 19% from 88 a year ago. Its average sold price was $980,223, 18% below last September. American Canyon moved the other way, closing 15 sales compared with 8 a year earlier.

Source: BAREIS MLS. Percent change compared to September 2025. Towns shown reflect the communities reported individually in the BAREIS snapshot. Totals may differ from countywide figures.

Outside the City of Napa and American Canyon, no town closed more than five sales in September, so one or two transactions can move an average sharply. St. Helena's average sold price rose 257% on five sales, while Calistoga's fell 87% on two. Read those as a snapshot of a handful of homes rather than a change in what homes in those towns are worth.

Third Quarter

A Broader View of the Third Quarter

Looking at July through September together smooths out some of the month to month movement. Napa County closed 331 sales in the third quarter of 2026, down 3% from 341 in the third quarter of 2025. The average sold price was $1,155,780, 2% lower, and homes that sold averaged 78 days on market, compared with 85 a year earlier.

Source: BAREIS MLS, Napa County residential, Q3 2026 compared to Q3 2025.

Sales above $1 million held nearly even for the quarter, with 117 closings compared with 118 a year earlier. That segment's average sold price was $2,163,609, 5% lower, and average days on market was essentially unchanged at 86.

By town, the City of Napa closed 246 sales in the quarter, up 6% from 231, with an average sold price of $1,117,213, up 2%. American Canyon also closed more homes than a year ago, 36 compared with 32. St. Helena, Yountville, and Calistoga each closed fewer. St. Helena's quarterly average sold price rose 35% to $2,670,588 on 23 sales, and Calistoga's fell 66% to $767,981 on 13 sales. In smaller towns, even a full quarter of data can reflect the particular mix of homes that happened to sell.

Statewide Context

How Napa Compares to California

The California Association of REALTORS® (C.A.R.) reports medians rather than averages, and its county figures cover existing single family detached homes only, while the BAREIS numbers above include all residential sales. The two are not directly comparable, but C.A.R.'s figures are useful for comparing Napa to the rest of the state on the same measure.

According to C.A.R., Napa County's median sold price was $918,000 in September, down 3.1% from August and up 2.0% from September 2025. The statewide median was $899,720. Napa's median time on market was 69 days, compared with 114 a year earlier and 29 days statewide.

C.A.R. also reported Napa County at 8.5 months of unsold inventory in September, up from 7.4 months a year earlier and above the statewide figure of 3.7 months. The index estimates how many months it would take to sell the homes currently on the market at the current sales pace. C.A.R. reported that the 30 year fixed mortgage rate averaged 6.86% in September, based on Freddie Mac weekly survey data, compared with 6.35% a year earlier.

What It Means

For Buyers and Sellers

For buyers, September brought fewer closings than a year ago, and the homes that sold did so in less time on average. With inventory measured at 8.5 months by C.A.R., it is worth reviewing what is available in your target area, along with listing history, before making an offer. Your agent can help you weigh each home on its own terms. Conditions can look very different from one town or price range to the next, so the countywide picture is a starting point rather than the full story.

For sellers, pricing grounded in recent comparable sales remains the most useful starting point. Town level averages in much of the valley reflect only a few transactions, so your agent can help you understand what recent activity looks like in your neighborhood and price range. Activity varied by town in September, with American Canyon closing more homes than a year ago while most other towns closed fewer, so local context matters.