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Highlights

  • Two-building mixed-use property combining historic character with modern construction.
  • Sustainable features include roof-mounted solar panels on the Maple Street building.
  • Highly visible location on a major arterial near Sonoma Plaza.

All Available Spaces(2)

Display Rental Rate as

  • Space
  • Size
  • Term
  • Rental Rate
  • Space Use
  • Build-Out
  • Available
  • 1st Floor, Ste 645-B
  • 629 SF
  • Negotiable
  • $36.00 /SF/YR $3.00 /SF/MO $22,644 /YR $1,887 /MO
  • Office/Retail
  • Full Build-Out
  • Now

Ground floor open space in Chamber of Commerce building. Shared restrooms and kitchen.

  • Listed rate may not include certain utilities, building services and property expenses
  • Open Floor Plan Layout
  • Fully Built-Out as Standard Office
  • Space is in Excellent Condition
  • 2nd Floor, Ste 651-200
  • 1,324 SF
  • Negotiable
  • $21.00 /SF/YR $1.75 /SF/MO $27,804 /YR $2,317 /MO
  • Office
  • Full Build-Out
  • Now

Third floor flex space in the Chamber of Commerce building. Shared restrooms and kitchen.

  • Listed rate may not include certain utilities, building services and property expenses
  • Space is in Excellent Condition
Space Size Term Rental Rate Space Use Build-Out Available
1st Floor, Ste 645-B 629 SF Negotiable $36.00 /SF/YR $3.00 /SF/MO $22,644 /YR $1,887 /MO Office/Retail Full Build-Out Now
2nd Floor, Ste 651-200 1,324 SF Negotiable $21.00 /SF/YR $1.75 /SF/MO $27,804 /YR $2,317 /MO Office Full Build-Out Now

1st Floor, Ste 645-B

Size
629 SF
Term
Negotiable
Rental Rate
$36.00 /SF/YR $3.00 /SF/MO $22,644 /YR $1,887 /MO
Space Use
Office/Retail
Build-Out
Full Build-Out
Available
Now

2nd Floor, Ste 651-200

Size
1,324 SF
Term
Negotiable
Rental Rate
$21.00 /SF/YR $1.75 /SF/MO $27,804 /YR $2,317 /MO
Space Use
Office
Build-Out
Full Build-Out
Available
Now

1st Floor, Ste 645-B

Size 629 SF
Term Negotiable
Rental Rate $36.00 /SF/YR
Space Use Office/Retail
Build-Out Full Build-Out
Available Now

Ground floor open space in Chamber of Commerce building. Shared restrooms and kitchen.

  • Listed rate may not include certain utilities, building services and property expenses
  • Fully Built-Out as Standard Office
  • Open Floor Plan Layout
  • Space is in Excellent Condition

2nd Floor, Ste 651-200

Size 1,324 SF
Term Negotiable
Rental Rate $21.00 /SF/YR
Space Use Office
Build-Out Full Build-Out
Available Now

Third floor flex space in the Chamber of Commerce building. Shared restrooms and kitchen.

  • Listed rate may not include certain utilities, building services and property expenses
  • Space is in Excellent Condition

Property Overview

Offered for lease, the office and retail space at 645-651 Broadway provides an adaptable environment in the historic core of Sonoma. This two-story building consists of private offices and open work areas designed to support various business needs. The property features abundant natural light, wheelchair accessibility, and convenient access to local dining and retail amenities. Tenants enjoy proximity to Sonoma Plaza and surrounding thoroughfares, positioning their operations within a thriving commercial corridor. With customizable space configurations, this location accommodates a diverse range of professional and service-oriented users seeking a well-connected address in Sonoma.

  • Wheelchair Accessible

Property Facts

Building Type
Office
Year Built
1928
Building Height
2 Stories
Building Size
4,734 SF
Building Class
C
Typical Floor Size
2,367 SF
Parking
19 Surface Parking Spaces

Select Tenants

  • Floor
  • Tenant Name
  • Industry
  • 1st
  • Beautiful Nails
  • Services
  • 1st
  • Sonoma Valley Chamber of Commerce
  • Services
Fairly walkable
50/100
Exceptionally drivable
100/100
Limited public transit
30/100
Fairly bikeable
50/100
  • Listing ID: 41094993

  • Date on Market: 6/29/2026

  • Last Updated:

  • Address: 645-651 Broadway, Sonoma, CA 95476

Contact the Leasing Agent

645-651 Broadway

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