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Property profile & analytics
OFF-MARKET
Estimated value
$630,000
Office buildings
20574 Wisteria St, Castro Valley, CA 94546-5523
Individually Owned
5-yr Hold
Free & Clear
Property ID
US09-9326454
Property profile
Verified
Property type
Office buildings
Use group
OFFICE BUILDING
Year built
1930
Construction
WOOD
Total area
2,060 SF
Lot
0.09 ac (4,000 SF)
APN
84A-131-16
UPID
US09-9326454
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
$650k
CAP Approach
CAP
$530k
Comparable Approach
Comparable
$697k
Blend (final)
Blend
$630k
Owner & transaction history
Mario Mendoza · 5 yrs held
Mario Mendoza
since 2021
Last sale
$630,000
6 recorded transactions
Zoning & alternative use
Permitted uses
Permitted uses
Allowed · conditional · prohibited
Top alternative use upside
Neighborhood: shopping center
$875,000
+31.0%
Auto repair, garage
$760,000
+14.0%
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
$605,000
ML approach
$650,000
CAP Approach
CAP Return
Estimation
6%
$575,000
6.5%
$530,000
7%
$490,000
Alternative Use
Use
Estimation
OFFICE BUILDING
$670,000
Current use
NEIGHBORHOOD: SHOPPING CENTER
$875,000
Change: +31% · Conversion: Difficult
AUTO REPAIR, GARAGE
$760,000
Change: +14% · Conversion: Difficult
RETAIL STORES
$595,000
Change: -11% · Conversion: Moderate
COMMERCIAL (GENERAL)
$565,000
Change: -15% · Conversion: Easy
MEDICAL BUILDING
$550,000
Change: -18% · Conversion: Easy
Blend value · Realmo final
$630k
Range $567k – $693k · ±10% · vs last sale $630k (Apr 23 2021)
Last sale anchor
$630k
Apr 23 2021
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
$306 / 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
$9,296
Tax year 2023
Assessed value
$668,556
Assessed 2024
Previous assessed
$655,452
+2.0% YoY
Effective rate
1.39%
On assessed value
Assessed land
$318,360
Assessed improvement
$350,196
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
Office buildings
Use group
OFFICE BUILDING
Status
Off-Market
Year built
1930
Construction
WOOD
Heating
NONE
Buildings
1
Stories
1
Units
1
Total area
2,060 SF
Lot
0.09 ac (4,000 SF)
APN
84A-131-16
UPID
US09-9326454
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
OFFICE BUILDING Current
Est. value
$670,000
NEIGHBORHOOD: SHOPPING CENTER
Est. value
$875,000
AUTO REPAIR, GARAGE
Est. value
$760,000
RETAIL STORES
Est. value
$595,000
COMMERCIAL (GENERAL)
Est. value
$565,000
MEDICAL BUILDING
Est. value
$550,000
OFFICE BUILDING Current
NEIGHBORHOOD: SHOPPING CENTER
AUTO REPAIR, GARAGE
RETAIL STORES
COMMERCIAL (GENERAL)
MEDICAL BUILDING
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
1930
Construction
WOOD
Heating
NONE
Stories
1
Buildings
1
Units
1
Lot
0.09 ac
Current owner
From public records · entity-resolved
Mario Mendoza
Individual
Free & Clear · 5 yrs held
Mailing address
2091 MARINA BLVD, SAN LEANDRO, CA 94577-3205
Ownership since
2021
Owner contacts — direct phone, email, and related entities
Decision-maker phone · Verified email · Related entities & filings
Owner contacts
Email · phone · related entities
Sales History
6 recorded events · public records
Date
Price
Buyer
Seller
Deed Type
Mortgage
Apr 23, 2021
$630,000
Mario Mendoza
Hardin Properties LLC
Grant Deed
—
Oct 31, 2018
$609,000
Hardin Properties LLC
Vls Clayworth Pharmacy INC
Grant Deed
—
Mar 11, 2016
$575,000
Vls Clayworth Pharmacy INC
Robert A Bbooks
Grant Deed
$431,250 · Cit Bank NA
Nov 5, 2004
—
Brooks Robert A & N L Trust
Brooks R A & N L Trust
Quit Claim Deed
related
—
Nov 2, 1998
—
Robert A Brooks
Brooks,robert A & Norma L
Quit Claim Deed
related
—
Oct 18, 1971
—
—
—
Grant Deed
related
—
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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