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Flex Space with Private Well
For Sale
$945,000

80 Barham Avenue, Santa Rosa, CA 95407

COMMERCIAL - Santa Rosa, CA

Property Size4,692 SF
Lot Size0.34 Acres
Price / SF$201.41
Days on Market144

Property Features for 80 Barham Avenue

General Information

Property type Commercial Sale
Property subtype Other
Parking 20
Security features Security
Directions Please don't get BARHAM Ave mixed up with West Barham. Go North on Corby from the Baker Ave overpass to Barham, turn left on Barham, the property is on your left. OR Go South on Dutton Ave. from Sebastopol Rd to West Barham. Go over the railraod tracks (it turns into BARHAM Ave there) the property will be on your right.
Subdivision Santa Rosa-Southwest
Standard status Active
APN 037151028000
Lot size 0.34 Acres

Utilities

Sewer type Public Sewer
Heating system Natural Gas
Water source Well

Amenities

private well

Building Details

Year built 1989
Floors in Building 1
Flooring type Concrete
Building materials Block, Wood
Roof type Composition
Listing Agency: Sonoma County Properties
Listed By: Ron L Welsh · License #DRE#01933912
Added: Mar 22 Changed: Aug 4 Last Checked: Aug 12 at 9:06AM
MLS# 326022418

Copyright © 2026 Bay Area Real Estate Information Services, Inc. All rights reserved. All information provided by the listing agent/broker is deemed reliable but is not guaranteed and should be independently verified.

Investment Insights

Based on property information with market context.

This flex space includes three separate spaces designed for a mix of office and warehouse use. A reception/office area connects to one bay with a restroom, and the two additional warehouse spaces each include a restroom.

The building provides 4,692 SF of commercial space on a 0.3397-acre lot. Construction materials include block and wood, with concrete flooring throughout. Heating is provided via natural gas, and the roof is a composition roof. Water service is from a private well, with sewer provided by the public sewer system. Built in 1989, the property offers an accessible, functional layout for contractor storage, light industrial warehousing, or automotive-related operations.

The property includes a well as a dedicated water source, supporting on-site use for the building and restroom facilities.

Key Highlights

  • 4,692 SF flex space with three separate spaces including office/reception and warehouse areas
  • 0.3397‑acre lot with reception/office plus one bay and restroom
  • Two additional warehouse spaces, each with its own restroom

Financial Insights

Estimated NOI and Cap Rate

NOI = area × lease_rate × (100 − vacancy) / 100 × (1 − expense_ratio). Net Operating Income — what the owner takes home each year before mortgage payments and income tax. Effective rent (asking rent minus vacancy losses) minus operating costs (taxes, insurance, maintenance, management).
NOI / Yr
$58,747
Cap rate = NOI / list price × 100. Capitalization rate — annual return on a fully cash purchase, before financing. NOI divided by price. Higher means more income per dollar invested, but usually also more risk or older condition. 5–8% is typical for stabilized commercial property; double digits often signal distressed deals.
Cap Rate
6.22%
Suggested Prices Based on Cap Rates Cap rates vary significantly by property type, market, and asset quality. Typical U.S. stable-market ranges: Multifamily — 4.5% to 6.5% (Class A in primary markets often sub-5%; Class C in secondary markets 6%+) Industrial / Logistics — 5.0% to 7.0% (compressed heavily in recent years due to e-commerce demand) Office — 6.5% to 9%+ (wide spread post-2020; CBD Class A vs. suburban Class B varies dramatically) Retail — 5.5% to 8.5% (grocery-anchored on the low end, unanchored strip centers higher) Hospitality / Hotels — 7.5% to 10%+ (higher due to operational risk) Self-Storage — 5.5% to 7.5% Medical Office — 6.0% to 7.5% Net Lease (single tenant, credit) — 5.0% to 7.0% depending on tenant credit and lease term Rules of thumb: Primary markets (NYC, SF, LA, Boston, DC) trade at lower cap rates than secondary/tertiary markets, often by 100–200 bps (bps, aka basis points; 1 bp = 0.01%). Class A assets trade ~50–150 bps tighter than Class B, and Class B tighter than Class C. Cap rates move inversely with price — a lower cap rate means a higher price for the same NOI. Spread to the 10-year Treasury is a common benchmark; historically 200–400 bps over the 10-year.
Cap Rate 5%
$1,174,940 $1.2M
Cap Rate 7%
$839,243 $839.2K
Cap Rate 9%
$652,744 $652.7K
Market Conditions
NOI Build-Up for 4,692 SF Vacancy — income lost from leasable area expected to sit empty during the year, subtracted from gross rent. EGI (Effective Gross Income) — gross rent minus vacancy losses, the realistic income before paying operating costs. OpEx (Operating Expenses) — recurring costs to operate the property (property tax, insurance, utilities, maintenance, management); excludes financing and capital improvements. NOI (Net Operating Income) — income a property generates after operating costs but before financing and taxes.
Gross rent
$72.1K $15.36/SF
− Vacancy
−$3.0K −$0.63/SF
EGI
$69.1K $14.73/SF
− OpEx
−$10.4K −$2.21/SF
NOI
$58.7K $12.52/SF
Area
Santa Rosa, CA
Vacancy
4.10%
Lease Rate
$15.36 /SF/Yr
Expense Ratio
15.00%
Simulate Cap Rate and NOI
Suggested Prices Based on Cap Rates Cap rates vary significantly by property type, market, and asset quality. Typical U.S. stable-market ranges: Multifamily — 4.5% to 6.5% (Class A in primary markets often sub-5%; Class C in secondary markets 6%+) Industrial / Logistics — 5.0% to 7.0% (compressed heavily in recent years due to e-commerce demand) Office — 6.5% to 9%+ (wide spread post-2020; CBD Class A vs. suburban Class B varies dramatically) Retail — 5.5% to 8.5% (grocery-anchored on the low end, unanchored strip centers higher) Hospitality / Hotels — 7.5% to 10%+ (higher due to operational risk) Self-Storage — 5.5% to 7.5% Medical Office — 6.0% to 7.5% Net Lease (single tenant, credit) — 5.0% to 7.0% depending on tenant credit and lease term Rules of thumb: Primary markets (NYC, SF, LA, Boston, DC) trade at lower cap rates than secondary/tertiary markets, often by 100–200 bps (bps, aka basis points; 1 bp = 0.01%). Class A assets trade ~50–150 bps tighter than Class B, and Class B tighter than Class C. Cap rates move inversely with price — a lower cap rate means a higher price for the same NOI. Spread to the 10-year Treasury is a common benchmark; historically 200–400 bps over the 10-year.
Cap Rate 5%
$1,174,940
Cap Rate 7%
$839,243
Cap Rate 9%
$652,744

Alternative Uses

Best Use
Warehouse
$839.2K
$734.3K – $979.1K (±1% cap)
NOI $58,747 @ 7.0% cap · market cap 6.22%
Second Best
Retail
$730.0K
$638.7K – $851.6K (±1% cap)
NOI $51,097 @ 7.0% cap · market cap 5.41%
Theoretical Best
Multifamily LT 5
$1.30M
$1.14M – $1.52M (±1% cap)
NOI $91,250 @ 7.0% cap · market cap 9.66%
Zoning and permitted uses should be independently verified with authorities.

Property Analytics

Current Use

Cast Kay Tee ... Swimming Pool

Suggested Use

Top Pick Dental Office Real Estate Agency HVAC Service Electrical Service (Bike/Boat/Book/etc) Store Accounting Firm

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

1
Service bays

Location Intelligence

Trade Area within ½ mile

974
Businesses Nearby
Under-served
Demand for This Use

Demographics for 95407, CA

42,504
Population
13,371
Households
3.2
Avg Household Size
34
Median Age
17%
College-Educated
73%
High-School Grad
21.6 sq mi
ZIP Area
1,968
Density / Sq Mi
$82,807
Median Household Income
$40,907
Median Earnings
$1,822
Median Rent
$603,300
Median Home Value

Market

Vacancy Rate% for Industrial in West region

3.7% 2019
4.3% 2020
2.6% 2021
2.5% 2022
4.8% 2023
6.9% 2024
7.9% 2025
Rey
Questions? Ask Rey
Realmo’s AI knows this listing — price, zoning, demand, history. Ask anything.

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Frequently Asked Questions

What type of property is this?
Flex space - Flex space with a private well and three separate spaces including office/reception and warehouse areas.
Where is this flex space located?
The property is located at 80 Barham Avenue Santa Rosa, CA.
What is the asking price?
The asking price for this property is $945,000.
What are key features of this property?
This property features: 4,692 SF flex space with three separate spaces including office/reception and warehouse areas; 0.3397‑acre lot with reception/office plus one bay and restroom; Two additional warehouse spaces, each with its own restroom
More about this property
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