Between December 2025 and April 2026, the median sold price in Marin County moved from $1,215,000 to $1.55 million. That is a swing of nearly 28 percent in four months, in a county with no earthquake in demand, no sudden influx of mansions, and no collapse in mortgage rates to explain it. By the time a broader three-month window closed in May 2026, the countywide median had settled at $1.6 million, down 5.7 percent from the same period the year before. Meanwhile, over the three months ending June 2026, San Rafael itself, the city inside Marin most buyers actually mean when they say "moving to Marin on a budget," posted a median sale price of $1.4 million, up 5.7 percent year over year.
Same county. Same summer. Opposite directions.
If you are comparing towns inside Marin and using the county median as your yardstick, you are reading a number that cannot tell you what you think it tells you. The thesis here is simple and worth sitting with before you look at a single listing: the countywide median in Marin has become a measure of which homes happened to close escrow in a given month, not a measure of what homes are worth. Price per square foot, tracked within a single town, is the number doing the real work. The county median is noise dressed up as signal.
The mechanism: why the median swings and the value doesn't
Marin's monthly market reports throughout 2026 kept landing on a version of the same footnote. In February, the median sold price fell 9.4 percent year over year to $1.3 million, while price per square foot barely moved, up 0.2 percent to $809. In the Redfin data covering the three months ending May, the county median fell 5.7 percent while price per square foot fell a much smaller 2.7 percent. The gap between how far the median moves and how far price per square foot moves is not a rounding error. It is the fingerprint of a mix-shift market.
Here is the plain version. A median is the price of the middle sale in a stack of closings, ranked low to high. If ten modest homes and two mansions close in one month, the median sits near the modest end. If the next month brings eight mansions and four modest homes, the median jumps, even if not one of those individual homes gained a dollar of value. Nothing about the housing stock changed. What changed is which slice of the housing stock happened to transact.
Marin is a small, geographically constrained county. Large portions of it sit inside protected open space, watershed land, and hillside zoning that leaves little room for new construction, which means the total number of closings in any given month is small enough that a handful of high-end sales, or a cluster of entry-level condo closings, can swing the county median in ways that would barely register in a larger market. Price per square foot within a single neighborhood strips most of that noise out, because it compares similar homes to similar homes rather than whatever happened to sell.
What the swing looked like month by month
| Reporting window | Countywide median sold price | Year-over-year change | Price per square foot |
|---|---|---|---|
| December 2025 | $1,215,000 | -4.7% | — |
| February 2026 | $1,300,000 | -9.4% | $809 (+0.2% YoY) |
| March 2026 | $1,500,000 | up sharply | — |
| April 2026 | $1,550,000 | up, sales +10% YoY | — |
| Three months ending May 2026 | $1,600,000 | -5.7% | $834 (-2.7% YoY) |
Set next to that, San Rafael's own city-level figures for the three months ending June 2026 showed a median of $1.4 million, up 5.7 percent year over year, with homes selling in an average of 24 days compared to 27 days the year before, and 177 homes sold in June alone compared to 141 the year before. Volume rose. Speed improved. The city's own median rose. None of that squares with a countywide narrative of a market losing 5.7 percent of its value in the same window, because that is not what happened. What happened is that the specific mix of homes closing county-wide shifted enough to move the aggregate number in a direction that has nothing to do with San Rafael's actual trajectory.
The Marin County Assessor's office, for its part, described the underlying market as stable rather than declining. The 2026 assessment roll grew 3.62 percent countywide, which the assessor's office attributed to continued investment in local communities even as higher rates and affordability pressures shaped activity. That is not the language of a market in retreat. It is the language of a market where the transaction mix is doing more talking than the values are.
The St. Louis Fed's housing data series for Marin County listing price per square foot backs this up from a different angle entirely. As of April 2026, the median listing price per square foot in the county sat at $760, a figure built from an entirely different methodology than the sold-price reports and still landing in the same general band as the sold figures from the same season. When two independently sourced measures of per-square-foot value agree while the median sale price is swinging by hundreds of thousands of dollars, the per-square-foot number is the one worth trusting.
Where the volume is actually coming from
San Rafael has been the most active city in Marin by transaction volume through 2026, and the activity has been concentrated in a specific band. Terra Linda, Sun Valley, and the East San Rafael corridor have carried the entry-level and mid-range demand, the kind of buyer moving from San Francisco who wants a house rather than a condo and is willing to trade proximity to the ferry for square footage. That volume is exactly the kind of activity that pulls a county median down even while it says nothing negative about value in those specific neighborhoods.
At the other end of the county, Kentfield continues to command some of the highest price per square foot in Marin, a position built on top-rated schools, proximity to outdoor recreation, and easy freeway access into San Francisco. Mill Valley behaves similarly, where a fully remodeled property can command a price that a larger but dated home nearby simply cannot touch, even in the same month. Novato sits at the other pole, offering more square footage per dollar and drawing families and remote workers who have made peace with a longer commute in exchange for space.
None of these towns move in lockstep. A buyer evaluating Marin against a countywide median is comparing a Terra Linda townhome to a Kentfield estate as though they belong to the same market. They don't. They belong to the same county.
What this means if you're comparing towns
If you are deciding between San Rafael, Kentfield, Mill Valley, and Novato, the county median should not be part of your decision at all. The comparison that matters is price per square foot within each town, paired with how many homes actually closed in that town during the period you're looking at. A median built on four sales tells you almost nothing. A median or a per-square-foot figure built on forty sales in the same neighborhood tells you something real.
The practical version of this for a buyer moving from San Francisco: San Rafael's East San Rafael corridor and Terra Linda are where the volume and the relative value currently sit, evidenced by faster days on market and rising closed-sale counts through the first half of 2026. Kentfield and Mill Valley remain premium purchases where school access and finished condition, not square footage alone, set the price. Novato remains the value play for buyers prioritizing space over proximity. None of that shows up in a countywide median. All of it shows up when you look at a single town's numbers in isolation.
FAQ
Is Marin County a buyer's market or a seller's market right now? Neither, cleanly. Months of supply tightened to under two months through the spring of 2026 even as the median headline softened, which is the signature of a market where well-presented homes in the right towns still draw competition while the aggregate statistics get pulled around by transaction mix.
Why would San Rafael's median rise while the county's fell in the same season? Because San Rafael's own closings, weighted toward its own housing stock across a three-month window, are a cleaner read than a countywide figure diluted by whatever mix of premium and entry-level homes happened to close everywhere else in Marin that month.
Should I use price per square foot instead of median price when comparing homes? Within a single town or neighborhood, yes, it strips out most of the mix distortion. Across very different towns, like comparing a Kentfield estate to a San Rafael townhome, price per square foot still needs context for lot size, condition, and school access before it means much on its own.
Numbers this volatile are exactly why a countywide statistic is the wrong tool for a decision this specific. If you are weighing San Rafael against Kentfield, Mill Valley, or Novato and want the actual comparable data for the neighborhoods you're considering, ACT can walk you through what the current numbers mean for your specific search. Schedule a Confidential Consultation.