Broadway Square

This offering presents a rare opportunity to acquire a mixed-use investment in a highly sought-after, low-supply Sonoma market, with clear potential for value enhancement.
The property consists of two mixed-use office and retail buildings situated on a single parcel along one of Sonoma’s most heavily traveled arterials. The investment’s upside can be realized through strategic management, leasing of available space, and completing lot line adjustments to allow each structure to stand on its own parcel—unlocking additional value and flexibility.
Constructed in 2007, 10 Maple Street is considered one of Sonoma’s premier office buildings. Each floor has separate electrical metering supported by roof-mounted solar panels with proprietary meters and equipment. The building’s dramatic lobby features a soaring, three-story ceiling and a cascading chandelier, while an ADA-compliant glass elevator offers street views between floors. Each level includes multiple ADA-compliant restrooms, and the finishes—such as drop ceilings, flooring, and interior detailing—are of top quality. The property offers approximately 9,982 square feet of leasable space within a total building area of about 12,930 square feet. Tenants and visitors benefit from 39 on-site parking spaces, supplemented by ample street parking. Access is convenient via two wide curb cuts from both Maple and First Streets.
Complementing this asset is 641–651 Broadway Street, a historically significant structure built in 1928 that exudes the charm of a classic Wine Country cottage. Positioned prominently on the hard corner of Broadway and Maple Streets, the mostly single-story building includes a small partial second floor. The estimated leasable area totals 4,734 square feet, plus approximately 801 square feet of common space for a total of about 5,535 square feet. The property’s front yard features a majestic tree surrounded by circular bench seating, creating a parklike setting that enhances the site’s appeal for both employees and visitors.
Together, these two properties offer an exceptional value-add opportunity. The investment strategy centers on conservative leasing assumptions for both office and retail components. Finalizing a lot line adjustment will enable the creation of two independent parcels, maximizing flexibility and allowing each asset to be sold separately to realize full development and repositioning potential.