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Property profile & analytics
OFF-MARKET
Estimated value
$1,740,000
Office buildings
3257 Del Mar Ave Rosemead, CA 91770-2360
Individually Owned
4-yr Hold
Absentee Owner
~
Est. High Equity
Property ID
US09-7361960
Property profile
Verified
Property type
Office buildings
Use group
OFFICE BUILDING
Year built
1991
Construction
WOOD
Total area
4,817 SF
Lot
0.23 ac (9,808 SF)
Zoning code
RMC3*
APN
5286-030-040
UPID
US09-7361960
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
Current use
Occupant on record · Public records
-
yuhong trading (Bike/Boat/Book/etc) Store
-
Peace of Mind Immigration Services Immigration & Naturalization Service
-
Thang Vi Duong DDS Inc. - Dentist Dental Office
-
US Home Dev. Home Remodeling and General Contractor Hardware & Home Improvement Kitchen & Bath Showroom
-
Dentistry Dental Office
Value estimations
Realmo proprietary · 4 methods
AI Approach
AI
$1.72M
CAP Approach
CAP
$1.73M
Comparable Approach
Comparable
by Request
Blend (final)
Blend
$1.74M
Owner & transaction history
Thang Vi Duong · 4 yrs held
Thang Vi Duong
since 2022
Last sale
$1.8M
7 recorded transactions
Zoning & alternative use
RMC3* · Rosemead, CA
Permitted uses
Permitted uses
Allowed · conditional · prohibited
Top alternative use upside
Auto repair, garage
$2.2M
+3.1%
Medical building
$2.2M
+1.4%
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 Rosemead submarket · NOI estimate · Typical band, median & reading
Implied cap rate, NOI & submarket benchmark
Cap vs Rosemead 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
$1,760,000
ML approach
$1,720,000
CAP Approach
CAP Return
Estimation
6%
$1,870,000
6.5%
$1,730,000
7%
$1,605,000
Alternative Use
Use
Estimation
OFFICE BUILDING
$2,160,000
Current use
AUTO REPAIR, GARAGE
$2,230,000
Change: +3% · Conversion: Difficult
MEDICAL BUILDING
$2,190,000
Change: +1% · Conversion: Easy
RETAIL STORES
$1,850,000
Change: -14% · Conversion: Moderate
Blend value · Realmo final
$1.74M
Range $1.57M – $1.91M · ±10% · vs last sale $1.75M (Feb 11 2022)
Last sale anchor
$1.75M
Feb 11 2022
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
$361 / 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 2024Property tax & assessments
Tax year 2024
Tax billed
$23,785
Tax year 2024
Assessed value
$1,820,700
Assessed 2024
Previous assessed
$1,820,700
+0.0% YoY
Effective rate
1.31%
On assessed value
Assessed land
$1,134,036
Assessed improvement
$686,664
Applied tax rate
3.0000
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
1991
Construction
WOOD
Heating
NONE
Stories
1
Units
1
Rooms
5
Total area
4,817 SF
Lot
0.23 ac (9,808 SF)
Zoning code
RMC3*
APN
5286-030-040
UPID
US09-7361960
Jurisdiction
LOS ANGELES
Metro division
LOS ANGELES-LONG BEACH-GLENDALE, CA METROPOLITAN DIVISION
Zoning & alternative use
RMC3* · Rosemead, CA
Zoning RMC3* · permitted uses
RMC3* · Rosemead, CA
Permitted & conditional uses
Allowed uses · Special-permit conditions · Prohibited uses
Permitted & conditional uses
Allowed · special-permit conditions · prohibited
Rosemead. Always verify with local authorities before improvements.
Alternative use value scenarios
Repositioning upside vs current use
OFFICE BUILDING Current
Est. value
$2.2M
AUTO REPAIR, GARAGE
Est. value
$2.2M
MEDICAL BUILDING
Est. value
$2.2M
RETAIL STORES
Est. value
$1.9M
OFFICE BUILDING Current
AUTO REPAIR, GARAGE
MEDICAL BUILDING
RETAIL STORES
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
1991
Construction
WOOD
Heating
NONE
Stories
1
Units
1
Rooms
5
Lot
0.23 ac
Current owner
From public records · entity-resolved
Thang Vi Duong
Individual
Mailing address
255 SPINKS CYN RD, BRADBURY, CA 91008-1246
Mailing matches property
Different — outreach signal
Owner-occupied
No
Ownership since
2022
Owner contacts — direct phone, email, and related entities
Decision-maker phone · Verified email · Related entities & filings
Owner contacts
Email · phone · related entities
Sales History
11 recorded events · public records
Date
Price
Buyer
Seller
Deed Type
Mortgage
Jan 13, 2023
—
Thang Vi Duong
—
Deed
related
$650,000 · Cdc Small Business Finance Corp
Feb 11, 2022
$1,750,000
Thang Vi Duong
Shu Mei Chang Shadem
Grant Deed
$910,000 · Neighborhood National Bank
Aug 29, 2001
—
Shadem S Chang
Chang,a S
Quit Claim Deed
related
—
Aug 29, 2001
$700,000
Shadem Chang
Chien,man M
Grant Deed
—
Sep 2, 1999
$340,000
Man-meei Chien
Liao,chien F
Grant Deed
related
—
Nov 29, 1990
$399,500
Epic Deed Servic
Chen Tsungho
Trustees Deed
—
Nov 29, 1990
$399,772
Liao Chien F M
Liu Noi
Trustees Deed
$600,000 · Individual
Jan 9, 1990
—
Noi Liu
Liu
Quit Claim Deed
related
—
Jan 9, 1990
$100,000
Liu Noi
Liu
Quit Claim Deed
related
$338,000 · Far East National Bank
Mar 28, 1989
$130,000
Chen Tsungho&mar
Epic
Trustees Deed
—
Mar 28, 1989
$260,000
Deed Serv Epic
Chen Trust
Grant Deed
—
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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