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Property profile & analytics
OFF-MARKET
Estimated value
$12,115,000
Office Spaces
4300 Winfield Rd, Warrenville, IL 60555-4012
Entity Owned
Absentee Owner
~
Est. High Equity
Property ID
US28-3524231
Property profile
Verified
Property type
Office Spaces
Use group
OFFICE (GENERAL)
Year built
2001
Total area
155,142 SF
Lot
7.83 ac (341,075 SF)
Zoning code
C
APN
07-02-203-005
UPID
US28-3524231
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
-
Constellation Regional Headquarters Corporate Office
-
Cantera Office School District Office
Value estimations
Realmo proprietary · 4 methods
AI Approach
AI
by Request
CAP Approach
CAP
by Request
Comparable Approach
Comparable
$12.91M
Blend (final)
Blend
$12.12M
Owner & transaction history
Winfield Property Exchange LLC
Winfield Property Exchange LLC
since 2025
Last sale
$14.0M
4 recorded transactions
Zoning & alternative use
C · Warrenville, IL
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 Warrenville submarket · NOI estimate · Typical band, median & reading
Implied cap rate, NOI & submarket benchmark
Cap vs Warrenville 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%
by Request
6.5%
by Request
7%
by Request
Alternative Use
Use
Estimation
COMMERCIAL (GENERAL)
$19,855,000
Current use
INDUSTRIAL (GENERAL)
$18,065,000
Change: -9% · Conversion: Moderate
WAREHOUSE, STORAGE
$16,160,000
Change: -19% · Conversion: Difficult
Blend value · Realmo final
$12.12M
Range $10.90M – $13.33M · ±10% · vs last sale $14.00M (Jul 24 2025)
Last sale anchor
$14.00M
Jul 24 2025
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
$78 / 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
$198,261
Tax year 2023
Assessed value
$2,637,150
Assessed 2023
Previous assessed
$5,574,160
-52.7% YoY
Effective rate
7.52%
On assessed value
Assessed land
$695,720
Assessed improvement
$1,941,430
Land market value
$2,087,160
Improvement market value
$5,824,290
Total market value
$7,911,450
Applied tax rate
7,105.0000
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 Spaces
Use group
OFFICE (GENERAL)
Status
Off-Market
Year built
2001
Heating
CENTRAL
Cooling
CENTRAL
Total area
155,142 SF
Lot
7.83 ac (341,075 SF)
Zoning code
C
APN
07-02-203-005
UPID
US28-3524231
Jurisdiction
DU PAGE
Metro division
CHICAGO-NAPERVILLE-JOLIET, IL METROPOLITAN DIVISION
Zoning & alternative use
C · Warrenville, IL
Zoning C · permitted uses
C · Warrenville, IL
Permitted & conditional uses
Allowed uses · Special-permit conditions · Prohibited uses
Permitted & conditional uses
Allowed · special-permit conditions · prohibited
Warrenville. Always verify with local authorities before improvements.
Alternative use value scenarios
Repositioning upside vs current use
COMMERCIAL (GENERAL) Current
Est. value
$19.9M
INDUSTRIAL (GENERAL)
Est. value
$18.1M
WAREHOUSE, STORAGE
Est. value
$16.2M
COMMERCIAL (GENERAL) Current
INDUSTRIAL (GENERAL)
WAREHOUSE, STORAGE
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
Heating
CENTRAL
Cooling
Yes
Lot
7.83 ac
Current owner
From public records · entity-resolved
Winfield Property Exchange LLC
Entity
Mailing address
2525 S SHR BLVD STE #207, LEAGUE CITY, TX 77573-2988
Mailing matches property
Different — outreach signal
Owner-occupied
No
Ownership since
2025
Owner contacts — direct phone, email, and related entities
Decision-maker phone · Verified email · Related entities & filings
Owner contacts
Email · phone · related entities
Sales History
4 recorded events · public records
Date
Price
Buyer
Seller
Deed Type
Mortgage
Oct 24, 2025
$14,000,000
Winfield Property Exchange LLC
Anico Reo C2 Owner LLC
Special Warranty Deed
$13,685,008 · Constellation Energy Generation LLC
Apr 17, 2024
—
Anico Reo C2 Owner LLC
Ciilandlord Il LLC
Warranty Deed
—
Sep 2, 2015
$34,800,000
Cii Landlord Il LLC
Northwestern Mutual Life Ins
Grant Deed
$22,620,000 · Miscellaneous Ins Co
Apr 6, 2000
$2,263,000
Mutual Life Ins Northwestern
Warrenville Development LP
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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