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Property profile & analytics
OFF-MARKET
Estimated value
$58,845,000
Medical Office Space
29251 Un City Blvd Union City, CA 94587
Individually Owned
3-yr Hold
Free & Clear
Property ID
US09-8691703
Property profile
Verified
Property type
Medical Office Space
Use group
MEDICAL BUILDING
Year built
2001
Construction
TILT-UP CONCRETE
Total area
257,479 SF
Lot
24.3 ac (1,058,608 SF)
APN
456-95-17-11
UPID
US09-8691703
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
$67.85M
Comparable Approach
Comparable
$40.85M
Blend (final)
Blend
$58.85M
Owner & transaction history
Alameda Cnty Flood Control & Water · 3 yrs held
Alameda Cnty Flood Control & Water
since 2023
5 recorded transactions
Zoning & alternative use
Permitted uses
Permitted uses
Allowed · conditional · prohibited
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 Union City submarket · NOI estimate · Typical band, median & reading
Implied cap rate, NOI & submarket benchmark
Cap vs Union City 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%
$73,505,000
6.5%
$67,850,000
7%
$63,005,000
Alternative Use
Use
Estimation
OFFICE BUILDING
$87,315,000
Change: -14% · Conversion: Easy
AUTO REPAIR, GARAGE
$82,915,000
Change: -19% · Conversion: Difficult
Blend value · Realmo final
$58.85M
Range $52.96M – $64.73M · ±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
$229 / 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
$133,661
Tax year 2023
Assessed value
$98,824,469
Assessed 2024
Previous assessed
$97,635,158
+1.2% YoY
Effective rate
0.14%
On assessed value
Assessed land
$13,259,148
Assessed improvement
$85,565,321
Applied tax rate
15.0000
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
2001
Construction
TILT-UP CONCRETE
Heating
NONE
Buildings
3
Stories
3
Bathrooms
7
Total area
257,479 SF
Lot
24.3 ac (1,058,608 SF)
APN
456-95-17-11
UPID
US09-8691703
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
Est. value
$87.3M
AUTO REPAIR, GARAGE
Est. value
$82.9M
OFFICE BUILDING
AUTO REPAIR, GARAGE
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
2001
Construction
TILT-UP CONCRETE
Heating
NONE
Stories
3
Buildings
3
Bathrooms
7
Lot
24.3 ac
Current owner
From public records · entity-resolved
Alameda Cnty Flood Control & Water
Individual
Free & Clear · 3 yrs held
Mailing address
1800 HARRISON ST FL 6TH, OAKLAND, CA 94612-3470
Ownership since
2023
Owner contacts — direct phone, email, and related entities
Decision-maker phone · Verified email · Related entities & filings
Owner contacts
Email · phone · related entities
Sales History
5 recorded events · public records
Date
Price
Buyer
Seller
Deed Type
Mortgage
Feb 1, 2023
—
Alameda Cnty Flood Control & Water
Kaiser Foundaton Health Plan INC
Grant Deed
—
Apr 7, 1992
—
Kaiser Foundatio
Branson Cross Li
Grant Deed
related
—
Sep 16, 1991
$2,100,000
Branson Cross LP
Crow East Bay Co
Quit Claim Deed
related
—
Jul 25, 1989
—
In Branson-cross
Lincoln Property
Quit Claim Deed
related
—
Jul 7, 1989
$2,100,000
Cross Li Branson
Branson-cross In
Grant Deed
related
$1,500,000 · Wells Fargo Bank
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.
Try Rey
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“Is 15.6% cap rate sustainable?” · “Best tenant mix for BU1?” · “What’s the redev upside?”
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