Duplex with Private
New
For Sale
$1,799,000
345 S 21St St, San Jose, CA 95116
Residential Income, San Jose, CA
Property Size4,066 SF
Lot Size0.18 Acres
Price / SF$442.45
Days on Market7
Property Features for 345 S 21St St
General Information
Property type
Residential Multi Family
Property subtype
Duplex
Bedrooms
6
Bathrooms
6
Full bathrooms
6
Rooms
Bathroom 4, Bedroom 6, Bathroom 5, Bathroom 6, Bathroom 1, Bedroom 3, Bathroom 2, Bedroom 1, Bedroom 4, Bedroom 2, Bedroom 5, Bathroom 3
Parking features
Garage, On Street
Exterior features
Back Yard
Fencing
Fenced
Subdivision
Downtown
Directions
Williams to 21st Street.
Special listing conditions
Probate Listing
Standard status
Active
APN
46737066 01
Size
4,066 SF
Lot size
0.18 Acres
Utilities
Sewer type
Public Sewer
Heating system
Forced Air
Cooling system
Central Air, Ceiling Fan(s)
Water source
Public
Amenities
in-unit laundry
private yard space
gated driveway
Building Details
Year built
2008
Number of units
2
Roof type
Composition
Listing Agency:
Keller Williams Realty
(925) 934-2900
Listed By:
Travis Clarke
(925) 922-2275
Added: Oct 8
Changed: Oct 11
Last Checked: Oct 14 at 11:06AM
MLS# 41148401
Copyright © 2026 Contra Costa Association of REALTORS®. 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 San Jose duplex contains two 2,033-square-foot residences, each configured with three bedrooms. Both units have a two-car garage, in-unit laundry, and private yard space. The property was built in 2008 and sits on a 0.1791-acre lot. The units are vacant, and the property needs work.
The gated driveway provides controlled entry and additional off-street parking. The property is near San Jose State University and Downtown San Jose, with access to Highway 101, I-280, and Highway 87. Public water and sewer serve the property.
The gated driveway provides controlled entry and additional off-street parking. The property is near San Jose State University and Downtown San Jose, with access to Highway 101, I-280, and Highway 87. Public water and sewer serve the property.
Key Highlights
- Two vacant units, each with 2,033 square feet and three bedrooms
- 0.1791‑acre lot; property includes 4,066 square feet of living space
- Each residence has a two‑car garage, in‑unit laundry, and private yard
Financial Insights
Estimated NOI and Cap Rate
NOI / Yr
$91,549
Cap Rate
5.09%
Suggested Prices Based on Cap Rates
Cap Rate 5%
$1,830,980
$1.8M
Cap Rate 7%
$1,307,843
$1.3M
Cap Rate 9%
$1,017,211
$1.0M
Market Conditions
NOI Build-Up for 4,066 SF
Gross rent
$136.6K $33.60/SF
− Vacancy
−$5.8K −$1.43/SF
EGI
$130.8K $32.17/SF
− OpEx
−$39.2K −$9.65/SF
NOI
$91.5K $22.52/SF
Area
San Jose, CA
Vacancy
4.27%
Lease Rate
$33.60 /SF/Yr
Expense Ratio
30.00%
Simulate Cap Rate and NOI
Suggested Prices Based on Cap Rates
Cap Rate 5%
$1,830,980
Cap Rate 7%
$1,307,843
Cap Rate 9%
$1,017,211
Alternative Uses
Best Use
Multifamily LT 5
$1.31M
$1.14M – $1.53M
NOI $91,549 @ 7.0% cap · market cap 5.09%
Second Best
Apartment 5plus
$1.21M
$1.06M – $1.41M
NOI $84,572 @ 7.0% cap · market cap 4.70%
Theoretical Best
Office A
$2.46M
$2.15M – $2.86M
NOI $171,891 @ 7.0% cap · market cap 9.55%
Zoning and permitted uses should be independently verified with authorities.
How Realmo checks its estimates
Property Analytics
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Current Use
Lease Details
2
Residential units
Yes
Highway access
Location Intelligence
Trade Area within ½ mile
1,104
Businesses Nearby
Explore this area
Business Placement
Demographics for 95116, CA
51,222
Population
13,987
Households
3.7
Avg Household Size
35
Median Age
21%
College-Educated
71%
High-School Grad
3.6 sq mi
ZIP Area
14,228
Density / Sq Mi
$83,428
Median Household Income
$41,992
Median Earnings
$2,049
Median Rent
$842,700
Median Home Value
Check the figures for this property
Cap Rate, Value Estimation, Potential NOI and more
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Market
Vacancy Rate% for Multifamily in West region
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Frequently Asked Questions
What type of property is this?
Duplex - Two vacant residences offer separate garages, in-unit laundry, and fenced outdoor space.
Where is this duplex located?
The property is located at 345 S 21St St San Jose, CA.
What is the asking price?
The asking price for this property is $1,799,000.
What are key features of this property?
This property features: Two vacant units, each with 2,033 square feet and three bedrooms; 0.1791‑acre lot; property includes 4,066 square feet of living space; Each residence has a two‑car garage, in‑unit laundry, and private yard
