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Property profile & analytics
OFF-MARKET
Estimated value
$550,000
Investment properties
3550 Castro Vly Blvd Castro Valley, CA 94546-4402
Trust Owned
19-yr Hold
Free & Clear
Property ID
US09-8027733
Property profile
Verified
Property type
Investment properties
Use group
OFFICE/RESIDENTIAL (MIXED USE)
Year built
1930
Construction
WOOD
Total area
2,756 SF
Lot
0.07 ac (3,124 SF)
APN
84C-773-6
UPID
US09-8027733
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
$740k
Comparable Approach
Comparable
$339k
Blend (final)
Blend
$550k
Owner & transaction history
Lin Family Trust · 19 yrs held
Lin Family Trust
since 2006
3 recorded transactions
Zoning & alternative use
Permitted uses
Permitted uses
Allowed · conditional · prohibited
Top alternative use upside
Office building
$895,000
+18.0%
Retail stores
$800,000
+5.4%
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%
$800,000
6.5%
$740,000
7%
$685,000
Alternative Use
Use
Estimation
COMMERCIAL (GENERAL)
$760,000
Current use
OFFICE BUILDING
$895,000
Change: +18% · Conversion: Easy
RETAIL STORES
$800,000
Change: +5% · Conversion: Easy
MEDICAL BUILDING
$735,000
Change: -3% · Conversion: Easy
Blend value · Realmo final
$550k
Range $495k – $605k · ±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
$200 / 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
$9,195
Tax year 2023
Assessed value
$542,965
Assessed 2024
Previous assessed
$532,319
+2.0% YoY
Effective rate
1.69%
On assessed value
Assessed land
$159,145
Assessed improvement
$383,820
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
Investment properties
Use group
OFFICE/RESIDENTIAL (MIXED USE)
Status
Off-Market
Year built
1930
Construction
WOOD
Heating
NONE
Buildings
1
Stories
1
Units
2
Total area
2,756 SF
Lot
0.07 ac (3,124 SF)
APN
84C-773-6
UPID
US09-8027733
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
COMMERCIAL (GENERAL) Current
Est. value
$760,000
OFFICE BUILDING
Est. value
$895,000
RETAIL STORES
Est. value
$800,000
MEDICAL BUILDING
Est. value
$735,000
COMMERCIAL (GENERAL) Current
OFFICE BUILDING
RETAIL STORES
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
2
Lot
0.07 ac
Current owner
From public records · entity-resolved
Lin Family Trust
Trust
Free & Clear · 19 yrs held
Mailing address
6390 GRASSLAND DR, CASTRO VALLEY, CA 94552-9703
Ownership since
2006
Owner contacts — direct phone, email, and related entities
Decision-maker phone · Verified email · Related entities & filings
Owner contacts
Email · phone · related entities
Sales History
3 recorded events · public records
Date
Price
Buyer
Seller
Deed Type
Mortgage
Nov 9, 2006
—
Lin Family Trust
Lin,wunan & Maggie C
Quit Claim Deed
related
—
Oct 1, 1999
—
Wonan Lin
Lin,wonan
Quit Claim Deed
related
—
Feb 27, 1991
$290,000
Wunan Lin
Stephen&mary Cle
Grant Deed
$230,000 · 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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