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Property profile & analytics
OFF-MARKET
Estimated value
$5,800,000
Medical Office Space
20126 Stanton Ave Castro Valley, CA 94546-5271
Individually Owned
9-yr Hold
Free & Clear
Property ID
US09-8526416
Property profile
Verified
Property type
Medical Office Space
Use group
MEDICAL BUILDING
Year built
1998
Construction
WOOD
Total area
20,547 SF
Lot
0.77 ac (33,433 SF)
APN
84A-279-5-8
UPID
US09-8526416
Cap rate & NOI
Priority signal for investors
Implied cap rate, NOI & suggested price
Cap rate vs submarket · NOI estimate · 3 price anchors
Implied cap rate, NOI & suggested price
Cap vs submarket · NOI estimate · 3 price anchors
Value estimations
Realmo proprietary · 4 methods
AI Approach
AI
by Request
CAP Approach
CAP
$5.42M
Comparable Approach
Comparable
$7.03M
Blend (final)
Blend
$5.80M
Owner & transaction history
Sutter Bay Hospitals · 9 yrs held
Sutter Bay Hospitals
since 2016
7 recorded transactions
Zoning & alternative use
Permitted uses
Permitted uses
Allowed · conditional · prohibited
Top alternative use upside
Neighborhood: shopping center
$8.7M
+59.3%
Auto repair, garage
$7.6M
+38.7%
Office building
$6.7M
+21.6%
Cap rate
Implied · in-place · derived from last sale + estimated NOI
Implied Cap rate
#1
Implied · in-place · NOI ÷ last sale
In-place · derived from last sale + estimated NOI
Cap rate, NOI & submarket benchmark
Implied cap rate vs Castro Valley submarket · NOI estimate · Typical band, median & reading
Implied cap rate, NOI & submarket benchmark
Cap vs Castro Valley submarket · NOI estimate · typical band, median & reading
Refine your cap rate
8-question underwriting flow
1.
Property current status — Going-In vs Stabilized
2.
Price for denominator — asking / offer / market
3.
Leasing status & lease structure (NNN / Gross)
4.
Tenant risk profile & vacancy assumption
5.
Upload T12 / rent roll / OM (optional)
Refine in 60 seconds, get exact suggested price
T12 upload · Submarket benchmarks · Sensitivity grid
Suggested price · 3 cap rate anchors
Income approach @ 5% / 7% / 9% — aggressive / typical / conservative
Suggested price at 5% / 7% / 9% cap
Aggressive / typical / conservative · Implied $/SF per anchor · Sensitivity grid
Suggested price at 5% / 7% / 9% cap
Aggressive / typical / conservative · implied $/SF · sensitivity
Value
AI, CAP & Alternative Use estimations · Realmo proprietary blendValue Estimations
Based on Realmo’s proprietary methodology
AI Approach
Method
Estimation
Statistic approach
by Request
ML approach
by Request
CAP Approach
CAP Return
Estimation
6%
$5,865,000
6.5%
$5,415,000
7%
$5,030,000
Alternative Use
Use
Estimation
MEDICAL BUILDING
$5,480,000
Current use
NEIGHBORHOOD: SHOPPING CENTER
$8,730,000
Change: +59% · Conversion: Difficult
AUTO REPAIR, GARAGE
$7,600,000
Change: +39% · Conversion: Difficult
OFFICE BUILDING
$6,665,000
Change: +22% · Conversion: Easy
RETAIL STORES
$5,955,000
Change: +9% · Conversion: Difficult
COMMERCIAL (GENERAL)
$5,650,000
Change: +3% · Conversion: Easy
INDUSTRIAL (GENERAL)
$5,585,000
Change: +2% · Conversion: Difficult
Blend value · Realmo final
$5.80M
Range $5.22M – $6.38M · ±10%
Realmo estimate · informational only.
These numbers are calculated by our models from public records and may not reflect actual market value.
Not an appraisal.
Verify with a licensed appraiser before transacting. Realmo accepts no liability for divergence from real-world outcomes.
View the full estimation — every method, every assumption
Confidence drivers & risk notes · Custom comparable set · Free for first 3 / day
Full estimation methodology
Every method · every assumption · confidence drivers
Price per SF
Sale + rent benchmarks
Subject property
$282 / SF
Submarket sale & rent benchmarks
Median sale $/SF · Asking & closed rent · Submarket vacancy
Submarket sale & rent benchmarks
Median sale $/SF · asking & closed rent · submarket vacancy
Property tax & assessments
Tax year 2023Property tax & assessments
Tax year 2023
Tax billed
$100,660
Tax year 2023
Assessed value
$7,819,199
Assessed 2024
Previous assessed
$7,665,910
+2.0% YoY
Effective rate
1.29%
On assessed value
Assessed land
$1,231,370
Assessed improvement
$6,587,829
Applied tax rate
54.0000
Comparables
6 recent transactions · within 1.5 miComparable in this city
6 recent transactions
Comparable in this City
Similar Nearby for Sale
Similar Nearby for Lease
Recent comparable sales
Sale price & price/SF · Sale date & distance · Adjustments & confidence
Recent comparable sales
Sale price & $/SF · sale date & distance · adjustments
Property description
Physical attributes from public recordsBuilding & lot
Public records
Property type
Medical Office Space
Use group
MEDICAL BUILDING
Status
Off-Market
Year built
1998
Construction
WOOD
Heating
NONE
Buildings
1
Stories
2
Units
5
Total area
20,547 SF
Lot
0.77 ac (33,433 SF)
APN
84A-279-5-8
UPID
US09-8526416
Jurisdiction
ALAMEDA
Metro division
OAKLAND-FREMONT-HAYWARD, CA METROPOLITAN DIVISION
Zoning & alternative use
Zoning · permitted uses
Permitted & conditional uses
Allowed uses · Special-permit conditions · Prohibited uses
Permitted & conditional uses
Allowed · special-permit conditions · prohibited
Alternative use value scenarios
Repositioning upside vs current use
MEDICAL BUILDING Current
Est. value
$5.5M
NEIGHBORHOOD: SHOPPING CENTER
Est. value
$8.7M
AUTO REPAIR, GARAGE
Est. value
$7.6M
OFFICE BUILDING
Est. value
$6.7M
RETAIL STORES
Est. value
$6.0M
COMMERCIAL (GENERAL)
Est. value
$5.7M
INDUSTRIAL (GENERAL)
Est. value
$5.6M
MEDICAL BUILDING Current
NEIGHBORHOOD: SHOPPING CENTER
AUTO REPAIR, GARAGE
OFFICE BUILDING
RETAIL STORES
COMMERCIAL (GENERAL)
INDUSTRIAL (GENERAL)
Alternative use deep dive — conversion cost, permits, timeline
Conversion cost estimate · Permit path & risks · Stabilized NOI per option
Alternative use deep dive
Conversion cost · permit path · stabilized NOI per option
Building & site characteristics
From public records
Year built
1998
Construction
WOOD
Heating
NONE
Stories
2
Buildings
1
Units
5
Lot
0.77 ac
Current owner
From public records · entity-resolved
Sutter Bay Hospitals
Individual
Free & Clear · 9 yrs held
Mailing address
PO BOX 71970, PHOENIX, AZ 85050-1017
Ownership since
2016
Owner contacts — direct phone, email, and related entities
Decision-maker phone · Verified email · Related entities & filings
Owner contacts
Email · phone · related entities
Sales History
8 recorded events · public records
Date
Price
Buyer
Seller
Deed Type
Mortgage
Dec 30, 2016
—
Sutter Bay Hospitals
Sutter Bay Hospitals
Quit Claim Deed
related
—
Nov 29, 2012
—
Sutter Medical Ctr Castro Vall
Eden Medical Center
Grant Deed
—
Jan 15, 1998
—
Eden Medical Center
Eden Township Hospital Dist
Quit Claim Deed
related
—
Jul 21, 1997
—
Eden Township Hospital Distric
Eden Township Hospital Distric
Quit Claim Deed
related
—
Mar 17, 1993
—
Jeffrey Randall
Randall,a.
Quit Claim Deed
related
—
—
—
Chabot Medical B
—
Deed Of Trust
related
$3,000,000 · Mutual Benefit Life Insurance
—
—
Chabot Medical Building Assoc
—
Deed Of Trust
related
$3,000,000 · Column Financial INC
—
—
J. Randall
—
Deed Of Trust
related
$63,000 · Individual
Coming soon
Costs & Benchmarks
Operating expenses, capex projections, utility benchmarks, and submarket comparables — all in one view.
Coming soon
Risks
Flood, climate, environmental, title, and tenant-concentration risk — surfaced with mitigations and source citations.
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