On September 4, a single-story house at 7126 Carillon Court in Rohnert Park sold for $550,000. Built in 1980, it runs 1,586 square feet, which works out to $347 a square foot. Five months earlier, a similar three-bedroom, two-bath house half a mile away at 7261 Roxanne Lane sold for $809,000 on 1,620 square feet, or $499 a square foot. Same city. Same bedroom count. A gap of $152 a square foot between two houses that could sit on the same street.
That gap is bigger than the one everyone assumes matters more: the gap between Rohnert Park and Cotati themselves. Over the three months ending in May 2026, Rohnert Park's median sale price sat at $700,000. Cotati's median for the same month was $649,611. That's a difference of about $50,000, or roughly 7 percent. Compare that to the 44 percent swing sitting inside Rohnert Park's own city limits, and the question buyers usually lead with, whether to aim for Rohnert Park or Cotati, turns out to be the smaller decision. The bigger one is what kind of house, on what kind of lot, built in what decade, you're actually pricing against.
The pattern isn't a fluke
The Carillon Court and Roxanne Lane sale isn't a one-off. Earlier in 2026, a house at 900 Hudis Street closed for $545,000, working out to $299 a square foot. Two months before that, a house at 272 Adele Avenue closed for $676,000 at $626 a square foot, more than double the per-foot price of the Hudis Street sale. Both houses. Both in Rohnert Park. Both closing within the same calendar year.
Two more recorded sales from that same stretch round out the picture:
| Address | Sale Month | Price | Price per Sq Ft |
|---|---|---|---|
| 7176 Camino Colegio Court | January 2026 | $635,000 | $457 |
| 7261 Roxanne Lane | April 2026 | $809,000 | $499 |
| 7201 Ruby Court | May 2026 | $685,000 | $423 |
| 7126 Carillon Court | September 2026 | $550,000 | $347 |
Four sales, four different price points per square foot, all inside Rohnert Park's borders in a single year. A buyer who anchors on the citywide median and assumes any house in town should land somewhere close to it is going to be surprised by comps that come in $150 or more per foot apart.
Where the spread comes from
The mechanism behind that spread has less to do with which side of town a house sits on and more to do with what generation of housing stock it belongs to. Rohnert Park's older tract sections, built through the 1970s, 80s and 90s, carry lower per-foot pricing because they're competing on square footage and lot size rather than finishes. Homes closer to SOMO Village, the newer mixed-use development in town, price off builder cost basis and new-construction premiums rather than resale history. Pull a citywide average that blends both categories together and you get a number that doesn't describe either one particularly well.
The same logic extends to product type. Single-family houses in Rohnert Park had a median in the $739,000 range in the first quarter of 2026, close to the broader Sonoma County median of $770,000 for that same quarter. Condos in the same city and same quarter had a median around $354,000. A buyer comparing "Rohnert Park" to "Cotati" on a single blended number is really comparing two different housing markets that happen to share a mailing address, condo HOA communities against detached single-family stock, 1980s ranch houses against a golf-course community like the one built around Foxtail Golf Club, starter tract homes against anything within easy walking distance of Sonoma State University, where an enrollment near 10,000 students keeps rental demand steady for nearby multi-family and small investment properties.
Cotati's version of the same problem, at a smaller scale
Cotati has its own reason to distrust its median, and it's a simpler one: there isn't much volume to average. In May 2026, Cotati recorded 19 home sales compared to Rohnert Park's 97. A market that thin means one or two unusual sales, a large lot on the edge of town or a small fixer near the core, can move the median more than a comparable outlier would in a bigger sample. Cotati's median price per square foot came in at $452 that same month, higher than Rohnert Park's $399, even though Cotati's overall median sale price was lower. That's the same story from a different angle. The city with the smaller houses on paper can still carry a higher per-foot cost, because a thin market weights differently than a deep one.
Cotati also carries a housing mix that grew in more of an organic pattern than Rohnert Park's planned layout, with a better shot at finding larger lots inside city limits. That's a real distinction between the two towns. It's just not the distinction a single median number is built to show.
The corridor that blurs the city line further
Buyers weighing commute distance got a fresh variable this year. On April 12, 2026, North Bay transit agencies rolled out the MASCOTS changes, which increased SMART rail service by 19 percent and improved transfers along the Highway 101 corridor. The SMART station itself sits at 980 East Cotati Avenue, a location that reads as much like Rohnert Park as it does Cotati depending on which direction you're facing. For a buyer whose search radius is built around getting to a train on time, the practical line between the two cities gets even thinner than the price data already suggests.
What this means for a real search
None of this means the citywide median is useless. It's a fine starting point for narrowing a search to a price range. It's a poor stopping point for deciding what you'll actually pay for a specific house. The Carillon Court and Roxanne Lane sales sat less than a mile apart and $259,000 apart in price on nearly identical square footage. That gap gets explained by comparing the right two houses against each other, not by comparing one city's median against another's.
A buyer set on Rohnert Park or Cotati is better served asking what decade a house was built, whether it sits inside or outside the SOMO Village footprint, and whether it's a single-family house or part of an HOA community, before asking which zip code wins on paper. The median will tell you the neighborhood is affordable relative to the rest of Sonoma County. It won't tell you why the house three doors down sold for $150 a square foot more than the one you're standing in.
If you're comparing specific streets in Rohnert Park and Cotati and want the actual recent comps rather than a blended citywide number, Hilary Thomas can pull the sales that match the house you're actually considering.
