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645 Broadway Sonoma, CA 95476

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For Sale
$3,610,000

Two mixed-use buildings in Sonoma with value-add potential.

Type:Office
Property size:
14,746 SF
Price / SF:
$244/SF
Added:
Apr 3, 2026
Days on Market:
20
Last Refresh:
Apr 3 at 5:24 am

Property Features for 645 Broadway

General Information

Standard status
Active
Size
14,746 SF
Property subtype
Office

Building Details

Year Built
1928

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Listing Contact
Quentin Caruso
Quentin Caruso

Listing agent Quentin Caruso License #CA: 02074286

Listing office San Francisco Office

Listing date Apr 3, 2026

Source Marcusmillichap

Displayed information is deemed reliable but is not guaranteed and should be independently verified.

All listing content including descriptions, pricing, images are the copyrighted material of San Francisco Office


Overview

Sonoma Mixed-Use Investment Opportunity

This offering features two mixed-use buildings on a single parcel in Sonoma, California. The properties are located on a highly traveled arterial. Built in 2007, 10 Maple Street is a three-story office property with approximately 9,982 square feet of gross leasable area and an estimated total gross square footage of 12,930 square feet. Each floor has separate electricity meters supported by roof-mounted solar panels. The entry lobby features a soaring ceiling with a chandelier. An ADA-compliant glass-walled elevator provides streetscape views. There are multiple ADA-compliant common area restrooms on each floor. The property includes 39 on-site parking spaces, augmented by ample on-street parking. Ingress and egress are convenient via two double-wide curb cuts onto Maple Street and First Street. The sister property at 641-651 Broadway Street, constructed in 1928, has a vintage Wine Country cottage aesthetic. It is located on the corner of Broadway and Maple Streets. The improvements are predominantly single-story with a small partial second level. The estimated gross leasable area is 4,734 square feet, with additional common areas of approximately 156 square feet on the upper level and 645 square feet on the ground level, for a total approximate gross building area of 5,535 square feet. A large tree encircled by bench seating dominates the Broadway Street façade and yard area. The total property size is 14746 square feet. A lot-line adjustment will create two separate parcels.
Location Intelligence

Current Use by Public Records

Office buildings

Suggested Use

Law Firm Real Estate Agency Restaurant Spa & Massage Center Dental Office Hair Salon Nail Salon Building Supply Gym & Fitness Center Daycare Center

Zoning and permitted uses should be independently verified with local authorities.

Location Insight

  • Map
  • Local Demand
City
Sonoma
County
Sonoma
State
California
Longitude
-122.4587255
Latitude
38.2893864

FAQs

What type of property is this?
Mixed-use property - Two mixed-use buildings in Sonoma with value-add potential.
Where is this mixed-use property located?
The property is located at 645 Broadway Sonoma, CA.
What is the asking price?
The asking price for this property is $3,610,000.
What are key features of this property?
This property features: Mixed‑use asset with upside potential through lease‑up and effective management.; Two buildings on a single parcel in a high‑traffic location in Sonoma, CA.; Opportunity to create two separate parcels via lot line adjustment for individual sale.
More about this property
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