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5-Unit Apartment Building
For Sale
$939,000

1601 Castro St, Martinez, CA 94553

A shared courtyard and a separate stairway to the upper unit distinguish the property’s residential layout.

Property Size3,486 SF
Price / SF$269.36
Days on Market8

Property Features for 1601 Castro St

General Information

Standard status Active
Size 3,486 SF
Property subtype Residential Income

Additional Details

Multifamily Units 5

Amenities

shared courtyard

Building Details

Construction Craftsman
Listing Agency: HomeSmart ICARE Realty
Listed By: Pamela Thiessen
Source: Exprealty
Added: Oct 26 Changed: Nov 1 Last Checked: Nov 1 at 2:56PM

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 HomeSmart ICARE Realty

Rey
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Investment Insights

Based on property information with market context.

This Craftsman-style rental property in Martinez comprises four apartments and a fifth unit positioned above the garage. The upper unit has its own stairway, while residents share a courtyard on the property.

The property is near downtown Martinez, schools, shopping and the waterfront. Its five-unit configuration and courtyard are key physical features of the offering.

Key Highlights

  • Five residential units: four in the main building and one above the garage
  • Separate stairway access serves the unit above the garage
  • Shared courtyard on the property

Financial Insights

Estimated NOI and Cap Rate

NOI / Yr
$55,415
Cap Rate
5.90%
Suggested Prices Based on Cap Rates
Cap Rate 5%
$1,108,300 $1.1M
Cap Rate 7%
$791,643 $791.6K
Cap Rate 9%
$615,722 $615.7K
Market Conditions
NOI Build-Up for 3,486 SF
Gross rent
$105.8K $30.36/SF
− Vacancy
−$5.1K −$1.46/SF
EGI
$100.8K $28.90/SF
− OpEx
−$45.3K −$13.01/SF
NOI
$55.4K $15.90/SF
Area
Contra Costa County, CA
Vacancy
4.80%
Lease Rate
$30.36 /SF/Yr
Expense Ratio
45.00%
Simulate Cap Rate and NOI
Suggested Prices Based on Cap Rates
Cap Rate 5%
$1,108,300
Cap Rate 7%
$791,643
Cap Rate 9%
$615,722

Alternative Uses

Best Use
Apartment 5plus
$791.6K
$692.7K – $923.6K (±1% cap)
NOI $55,415 @ 7.0% cap · market cap 5.90%
Second Best
—
—
no second resolved use
Theoretical Best
Office A
$1.32M
$1.15M – $1.54M (±1% cap)
NOI $92,240 @ 7.0% cap · market cap 9.82%
Zoning and permitted uses should be independently verified with authorities. How Realmo checks its estimates

Property Analytics

Who owns this building? See the owner, sales and loan history
Open Analytics

Lease Details

5
Residential units

Location Intelligence

Trade Area within ½ mile

1,551
Businesses Nearby

Demographics for 94553, CA

49,756
Population
19,626
Households
2.5
Avg Household Size
42
Median Age
42%
College-Educated
94%
High-School Grad
61.6 sq mi
ZIP Area
808
Density / Sq Mi
$121,023
Median Household Income
$70,337
Median Earnings
$2,247
Median Rent
$781,400
Median Home Value
Check the figures for this property Cap Rate, Value Estimation, Potential NOI and more
View Realmo Analytics

Market

Vacancy Rate% for Multifamily in West region

7% 2022
7.8% 2023
8.6% 2024
8.6% 2025

Frequently Asked Questions

What type of property is this?
Apartment building - A shared courtyard and a separate stairway to the upper unit distinguish the property’s residential layout.
Where is this apartment building located?
The property is located at 1601 Castro St Martinez, CA.
What is the asking price?
The asking price for this property is $939,000.
What are key features of this property?
This property features: Five residential units: four in the main building and one above the garage; Separate stairway access serves the unit above the garage; Shared courtyard on the property
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