The commercial real estate market in California's North Bay remained active through late summer and early fall, with significant transactions recorded across Marin and Sonoma counties. Recent deals included major office building sales, industrial property acquisitions, and multifamily unit transfers, totaling more than $13.5 million in property sales alone.
A key transaction involved a 30,436-square-foot office building in San Rafael, which sold for $4.3 million. In Sonoma County, sales activity was spread across industrial, multifamily, and office properties, indicating a diverse investment landscape. These transactions provide a snapshot of current market dynamics in the region's commercial sector.
Key Takeaways
- A San Rafael office building at 1401 Los Gamos Road sold for $4.3 million in September 2025.
- Sonoma County saw over $9.2 million in commercial property sales, including industrial, multifamily, and office assets.
- Leasing activity was robust, with tenants securing spaces ranging from small offices to large industrial warehouses.
- Multifamily properties in Santa Rosa and Rohnert Park attracted investors, with sales totaling over $2.8 million for 16 units.
- Industrial properties in Santa Rosa were particularly active, with multiple sales and lease agreements finalized.
Major Office Building in San Rafael Changes Hands for $4.3 Million
One of the most significant transactions in the North Bay was the sale of a two-story office building located at 1401 Los Gamos Road in San Rafael. The 30,436-square-foot property, built in 1986, was sold in a deal that closed on September 16, 2025.
The building was purchased by Richard Tremain for $4.3 million. It was sold by the Denise B. Filakosky Revocable Trust. According to reports, the property was listed for the first time in its history in February 2025 with an asking price of $5.1 million.
Property Details at Time of Sale
At the time of its listing, the San Rafael office building was 43% occupied. Tenants included several nonprofit and legal organizations, such as Legal Aid Marin, Marin CASA, Family & Children’s Law Center, 10,000 Degrees, and Marin LAFCO, along with Alarm Financial.
The transaction was managed by Matt Storms and Nathan Ballard of Keegan & Coppin Co. Inc., who represented the seller. The sale highlights continued investor interest in established office properties within Marin County, even as occupancy rates are a key consideration.
Sonoma County Sees Diverse Commercial Sales Activity
Sonoma County experienced a flurry of commercial real estate sales, with transactions spanning industrial, multifamily, office, and retail properties. The deals reflect a dynamic market with varied investor demand across different asset classes.
Industrial and Multifamily Properties Lead Sales Volume
The largest sale in Sonoma County was an industrial property at 1825 Empire Industrial Court in Santa Rosa. The 17,219-square-foot facility was acquired by Rocky Empire LLC for $2.5 million on August 29, 2025. The seller was the Estate of Ramona Crinella. Dave Peterson of Keegan & Coppin represented the buyer in this transaction.
Multifamily properties also saw significant activity. A 12-unit complex at 714 College Avenue & 713 Cherry Street in Santa Rosa was sold for $1.86 million on September 15, 2025. Mason Street SF LLC purchased the 7,200-square-foot property. Mike Flitner and Demi Basiliades of Keegan & Coppin represented both the buyer and the sellers, which included Mary Ann Degrazia and Cathy McNaughton.
In Rohnert Park, a four-unit multifamily property at 7580 Bridgit Drive sold for $950,000. The 2,912-square-foot property was purchased by Fernando Soto Perez on August 26, 2025.
Snapshot of Sonoma County Sales
- $2,500,000: 17,219 sq ft industrial property in Santa Rosa.
- $1,860,000: 12-unit multifamily complex in Santa Rosa.
- $1,560,000: 7,438 sq ft office/retail building in Sebastopol.
- $1,175,000: 4,548 sq ft mixed-use office/multifamily in Santa Rosa.
- $1,010,000: 2,050 sq ft office building in Santa Rosa.
Mixed-Use and Office Sales Show Market Breadth
A mixed-use office and retail building at 8196 Bodega Avenue in Sebastopol sold for $1.56 million. The 7,438-square-foot property was acquired by Paddock Prancers LLC on August 29, 2025. Kevin Doran of Keegan & Coppin procured the buyer.
Another notable sale was a mixed-use office and multifamily property at 1022 Mendocino Avenue in Santa Rosa. Chilcott Hubiak Holdings LLC purchased the 4,548-square-foot building for $1.175 million on September 3, 2025. Annette Cooper of Keegan & Coppin represented the buyer in the deal.
Leasing Market Remains Strong Across North Bay
Alongside property sales, the commercial leasing market in Marin and Sonoma counties showed considerable strength. Companies from various sectors, including legal, healthcare, retail, and industrial services, signed new lease agreements, filling spaces of all sizes.
Sonoma County Leasing Highlights
The largest lease was signed by the law firm Spaulding, McCullough, & Tansil LLP, which took 13,182 square feet of office space at 90 E Street in Santa Rosa. Shawn Johnson of Keegan & Coppin represented the lessee in the deal, which was finalized on July 22, 2025.
The industrial sector also saw significant leasing. PACE Supply Corp. leased a 9,920-square-foot industrial space at 1264 Lotus Court in Santa Rosa. In Petaluma, Rogue Research Inc. leased 9,014 square feet of industrial space at 133 Copeland Street.
"The consistent pace of both sales and leasing transactions demonstrates a healthy and resilient commercial real estate market in the North Bay region," noted a market summary from Keegan & Coppin Co. Inc., the brokerage firm involved in a majority of the reported deals.
Marin County Leasing Activity
In Marin County, the retail sector was active at the Bon Air Center in Greenbrae. Greenbrae WH leased 3,682 square feet, and RFSA Alpha LLC leased 2,350 square feet in separate deals brokered by Vesa Becam of Keegan & Coppin in September 2024.
Office and industrial leases were also common. Living Motion Systems LLC secured 1,999 square feet of office space at 45 Mitchell Boulevard in San Rafael, while nonprofit Marin CASA leased 1,970 square feet of office space at 1401 Los Gamos—the same building that was later sold.
These transactions, from small office suites to large industrial warehouses, underscore the diverse needs of businesses operating in the North Bay and the market's ability to meet them.
