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Property profile & analytics
OFF-MARKET
Estimated value
$1,265,000
Office buildings
21450 Golden Spgs Dr Diamond Bar, CA 91789-3930
Entity Owned
12-yr Hold
Absentee Owner
~
Est. High Equity
Property ID
US09-6418716
Property profile
Verified
Property type
Office buildings
Use group
OFFICE BUILDING
Year built
1977
Construction
TILT-UP CONCRETE
Total area
8,500 SF
Lot
0.62 ac (27,209 SF)
Zoning code
LCC2*
APN
8763-001-038
UPID
US09-6418716
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
by Request
Comparable Approach
Comparable
by Request
Blend (final)
Blend
$1.27M
Owner & transaction history
21450 Golden Springs LLC · 12 yrs held
21450 Golden Springs LLC
since 2013
6 recorded transactions
Zoning & alternative use
LCC2* · 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
CAP Approach
Comparable Approach
Alternative Use
Get a detailed, property-specific estimation — fast and free
Price per SF
Sale + rent benchmarks
Subject property
$149 / 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
$18,610
Tax year 2024
Assessed value
$1,418,546
Assessed 2024
Previous assessed
$1,418,546
+0.0% YoY
Effective rate
1.31%
On assessed value
Assessed land
$965,822
Assessed improvement
$452,724
Applied tax rate
16.0000
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
1977
Construction
TILT-UP CONCRETE
Heating
NONE
Buildings
2
Stories
1
Bathrooms
4
Total area
8,500 SF
Lot
0.62 ac (27,209 SF)
Zoning code
LCC2*
APN
8763-001-038
UPID
US09-6418716
Jurisdiction
LOS ANGELES
Metro division
LOS ANGELES-LONG BEACH-GLENDALE, CA METROPOLITAN DIVISION
Zoning & alternative use
LCC2* · Diamond Bar, CAZoning LCC2* · permitted uses
LCC2* · Diamond Bar, CA
Permitted & conditional uses
Allowed uses · Special-permit conditions · Prohibited uses
Permitted & conditional uses
Allowed · special-permit conditions · prohibited
Building & site characteristics
From public records
Year built
1977
Construction
TILT-UP CONCRETE
Heating
NONE
Stories
1
Buildings
2
Bathrooms
4
Lot
0.62 ac
Current owner
From public records · entity-resolved
21450 Golden Springs LLC
Entity
Mailing address
20250 CARREY RD, WALNUT, CA 91789-2301
Mailing matches property
Different — outreach signal
Owner-occupied
No
Ownership since
2013
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
Aug 2, 2013
—
21450 Golden Springs LLC
L-k Family Vii LLC
Quit Claim Deed
—
Apr 5, 2013
$1,175,000
L-k Family Vii LLC
Wendler Evelyn R Trust
Grant Deed
—
Jun 15, 2010
—
Wcp Wireless Lease Subsidiary
—
Deed Of Trust
related
$85,000,000 · Unicredit Bank
May 19, 2008
—
Wcp Wireless Lease Subsidiary
—
Deed Of Trust
related
$85,000,000 · Bayerische Hypo-und Vereinsban
Jul 29, 1999
—
Wendler,evelyn R Trustee
Wendler,e R
Quit Claim Deed
related
—
—
—
Wendler Evelyn R Trust
—
Deed Of Trust
related
$800,000 · Wilshire State 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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