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Three-Story Multi-Tenant Office Building
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520 Mendocino Avenue, Santa Rosa, CA 95404

Renovated in 2013/2014 and fully occupied by three tenants in a downtown office setting.

Property SizeContact for details
Days on Market145

Property Features for 520 Mendocino Avenue

General Information

Standard status Active
Class Class B
Property subtype Office
Occupancy 100%

Building Details

Year Renovated 2014
Buildings 1
Stories 3
Tenancy Multi
Abandoned No
Listing Agency: Keegan & Coppin Co. Santa Rosa
Listed By: Dave Peterson · License #CA 01280039
Source: Crexi
Added: Apr 10 Changed: Aug 31 Last Checked: Aug 31 at 3:00AM

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 Keegan & Coppin Co. Santa Rosa

Investment Insights

Based on property information with market context.

This three-story Class B office building in Downtown Santa Rosa is configured for multiple occupants and currently has three tenants. The County of Sonoma occupies approximately 43,366 SF, while Reservation Key uses 4,158 SF and Sprint Spectrum occupies 586 SF for an equipment room. Multi-tenant corridors support the existing configuration and provide flexibility for future layout changes.

The property was renovated in 2013/2014, including improvements to the building and the County of Sonoma’s space. The County has maintained tenancy since the late 1990s and expanded its presence over time. Current occupancy is 100%, with the existing tenant mix spanning government, business, and equipment-related office use.

Key Highlights

  • Three‑story Class B office building in Downtown Santa Rosa
  • 100% occupancy across 3 tenants
  • County of Sonoma occupies approximately 43,366sf

Property Analytics

Current Use

Sonoma Mortgage Co Loan Service Willowglen Homes Construction Company S R Wilson ... Employment Agency Otis Elevator Co Construction Company Work Wise Law Firm

Suggested Use

Top Pick Locksmith (Bike/Boat/Book/etc) Store Fish Market Butcher Restaurant Buffet

Score = modeled unmet demand for each use within ~1 mi (higher = bigger opportunity). Zoning and permitted uses should be independently verified with local authorities.

Lease Details

100%
Occupancy
Multi-tenant
Tenancy

Location Intelligence

Trade Area within ½ mile

4,126
Businesses Nearby

Demographics for 95404, CA

38,034
Population
16,850
Households
2.3
Avg Household Size
43
Median Age
45%
College-Educated
90%
High-School Grad
75.4 sq mi
ZIP Area
504
Density / Sq Mi
$102,802
Median Household Income
$57,388
Median Earnings
$1,890
Median Rent
$865,900
Median Home Value

Market

Vacancy Rate% for Office in West region

11% 2019
14.1% 2020
15.5% 2021
17.2% 2022
19.9% 2023
21% 2024
20.8% 2025
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Frequently Asked Questions

What type of property is this?
Office building - Renovated in 2013/2014 and fully occupied by three tenants in a downtown office setting.
Where is this office building located?
The property is located at 520 Mendocino Avenue Santa Rosa, CA.
What are key features of this property?
This property features: Three‑story Class B office building in Downtown Santa Rosa; 100% occupancy across 3 tenants; County of Sonoma occupies approximately 43,366sf
More about this property
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