Remodeled Duplex with
New
For Sale
$999,000
20275 Stanton Ave, Castro Valley, CA 94546
Residential Income, Castro Valley, CA
Property Size1,680 SF
Lot Size0.11 Acres
Price / SF$594.64
Days on Market2
Property Features for 20275 Stanton Ave
General Information
Property type
Residential Multi Family
Property subtype
Duplex
Bedrooms
4
Bathrooms
7
Full bathrooms
7
Rooms
Bathroom 2, Bathroom 5, Bathroom 3, Bedroom 1, Bedroom 4, Bathroom 7, Bedroom 2, Bathroom 1, Bathroom 6, Bathroom 4, Bedroom 3
Parking features
Open
Interior features
Tub w/Shower Over
Exterior features
Back Yard, Front Yard, Garden/Play
Subdivision
Castro Valley
Lot features
Sloped Up
Directions
Castro Valley Blvd. to Stanton Ave
Standard status
Active
APN
84A21626
Size
1,680 SF
Lot size
0.11 Acres
Utilities
Sewer type
Public Sewer
Heating system
Wall Furnace
Water source
Public
Building Details
Year built
1937
Number of units
2
Flooring type
Vinyl
Building materials
Wood Siding
Roof type
Composition
Listing Agency:
KW Advisors East Bay · Keller Williams Realty
(510) 775-1079
Listed By:
Danielle Keil · License #01280917
(510) 381-7451
Added: Aug 31
Last Checked: Sep 1 at 1:06AM
MLS# 41144643
Copyright © 2026 Bay East. 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 two-unit residential property contains 1,680 square feet and was built in 1937. Each unit includes two bedrooms, one bathroom, a kitchen with a dishwasher, a private one-car garage, and driveway parking. The front residence has undergone a recent remodel and receives abundant natural light, while the rear residence includes a backyard suited to gardening or outdoor use. Wood siding, vinyl flooring, wall-furnace heating, a composition roof, and public water and sewer service complete the property’s physical profile.
The property is located in Castro Valley near Eden Hospital, with shops, cafés, and everyday services nearby. Front and rear yards provide separate exterior areas, and the lot measures 0.1148 acres. The duplex configuration supports residential occupancy with rental-income potential, subject to applicable requirements.
The property is located in Castro Valley near Eden Hospital, with shops, cafés, and everyday services nearby. Front and rear yards provide separate exterior areas, and the lot measures 0.1148 acres. The duplex configuration supports residential occupancy with rental-income potential, subject to applicable requirements.
Key Highlights
- Two 2‑bedroom, 1‑bathroom units
- 1,680 square feet on a 0.1148‑acre lot
- Private one‑car garage and driveway parking for each unit
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
$56,389
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
5.64%
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%
$1,127,780
$1.1M
Cap Rate 7%
$805,557
$805.6K
Cap Rate 9%
$626,544
$626.5K
Market Conditions
NOI Build-Up for 1,680 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
$85.7K $51.00/SF
− Vacancy
−$5.1K −$3.05/SF
EGI
$80.6K $47.95/SF
− OpEx
−$24.2K −$14.39/SF
NOI
$56.4K $33.57/SF
Area
Alameda County, CA
Vacancy
5.98%
Lease Rate
$51.00 /SF/Yr
Expense Ratio
30.00%
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%
$1,127,780
Cap Rate 7%
$805,557
Cap Rate 9%
$626,544
Alternative Uses
Best Use
Multifamily LT 5
$805.6K
$704.9K – $939.8K
NOI $56,389 @ 7.0% cap · market cap 5.64%
Second Best
Apartment 5plus
$347.7K
$304.2K – $405.6K
NOI $24,337 @ 7.0% cap · market cap 2.44%
Theoretical Best
Retail
$7.66M
$6.70M – $8.94M
NOI $536,133 @ 7.0% cap · market cap 53.67%
Zoning and permitted uses should be independently verified with authorities.
Property Analytics
Property Profile
Current Use
Lease Details
2
Residential units
Location Intelligence
Trade Area within ½ mile
1,588
Businesses Nearby
Explore this area
Business Placement
Demographics for 94546, CA
46,687
Population
16,398
Households
2.8
Avg Household Size
40
Median Age
41%
College-Educated
90%
High-School Grad
16.0 sq mi
ZIP Area
2,918
Density / Sq Mi
$125,780
Median Household Income
$66,737
Median Earnings
$2,506
Median Rent
$976,300
Median Home Value
Market
Vacancy Rate% for Multifamily in West region
Questions? Ask Rey
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Frequently Asked Questions
What type of property is this?
Duplex - Two residential units combine private outdoor areas, driveway parking, and convenient access to nearby medical and neighborhood amenities.
Where is this duplex located?
The property is located at 20275 Stanton Ave Castro Valley, CA.
What is the asking price?
The asking price for this property is $999,000.
What are key features of this property?
This property features: Two 2‑bedroom, 1‑bathroom units; 1,680 square feet on a 0.1148‑acre lot; Private one‑car garage and driveway parking for each unit
