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Property profile & analytics
OFF-MARKET
Estimated value
$1,525,000
Office buildings
20709 Golden Spgs Dr, Diamond Bar, CA 91789-3847
Entity Owned
7-yr Hold
~
Est. High Equity
Property ID
US09-8520876
Property profile
Verified
Property type
Office buildings
Use group
PROFESSIONAL BUILDING
Year built
1981
Construction
WOOD
Total area
7,571 SF
Lot
0.35 ac (15,196 SF)
Zoning code
LCC3DP*
APN
8763-007-004
UPID
US09-8520876
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
$2.01M
Comparable Approach
Comparable
$937k
Blend (final)
Blend
$1.53M
Owner & transaction history
Agic Capital Management · 7 yrs held
Agic Capital Management
since 2018
6 recorded transactions
Zoning & alternative use
LCC3DP* · Diamond Bar, CA
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 Diamond Bar submarket · NOI estimate · Typical band, median & reading
Implied cap rate, NOI & submarket benchmark
Cap vs Diamond Bar 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%
$2,170,000
6.5%
$2,005,000
7%
$1,860,000
Alternative Use
Use
Estimation
COMMERCIAL (GENERAL)
$2,485,000
Change: -18% · Conversion: Easy
Blend value · Realmo final
$1.53M
Range $1.37M – $1.68M · ±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
$201 / 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
$28,417
Tax year 2024
Assessed value
$2,159,947
Assessed 2024
Previous assessed
$2,159,947
+0.0% YoY
Effective rate
1.32%
On assessed value
Assessed land
$1,295,969
Assessed improvement
$863,978
Applied tax rate
10.0000
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
PROFESSIONAL BUILDING
Status
Off-Market
Year built
1981
Construction
WOOD
Heating
NONE
Stories
1
Total area
7,571 SF
Lot
0.35 ac (15,196 SF)
Zoning code
LCC3DP*
APN
8763-007-004
UPID
US09-8520876
Jurisdiction
LOS ANGELES
Metro division
LOS ANGELES-LONG BEACH-GLENDALE, CA METROPOLITAN DIVISION
Zoning & alternative use
LCC3DP* · Diamond Bar, CA
Zoning LCC3DP* · permitted uses
LCC3DP* · Diamond Bar, CA
Permitted & conditional uses
Allowed uses · Special-permit conditions · Prohibited uses
Permitted & conditional uses
Allowed · special-permit conditions · prohibited
Diamond Bar. Always verify with local authorities before improvements.
Alternative use value scenarios
Repositioning upside vs current use
COMMERCIAL (GENERAL)
Est. value
$2.5M
COMMERCIAL (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
1981
Construction
WOOD
Heating
NONE
Stories
1
Lot
0.35 ac
Current owner
From public records · entity-resolved
Agic Capital Management
Entity
Mailing address
PO BOX 2707, LA PUENTE, CA 91746-0707
Ownership since
2018
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
Mar 30, 2022
—
Agic Capital Management
—
Deed
related
$1,380,000 · Ctbc Bank Corp USA
Jan 3, 2019
—
Agic Capital Management
—
Deed
related
$1,250,000 · East West Bank
Aug 3, 2018
$1,975,000
Agic Capital Management
David A Tabata
Grant Deed
$1,250,000 · Esun Commercial Bank Ltd
Dec 28, 2009
—
David A Tabata
Tabata D A & S N Trust
Quit Claim Deed
related
—
Dec 30, 1999
$800,000
Tabata Trust
Michaels Trust
Grant Deed
$480,000 · Seller
Mar 25, 1998
—
Michaels,joseph & Josephine H Tr
Michaels,j & J H
Quit Claim 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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