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603 E Diehl Rd, Naperville, IL 60563 Property Records

DuPage County property record for 603 E Diehl Rd, Naperville, IL 60563

Property Summary

Property TypeCommercial
Lot Size3.35 acres (145,926 sqft)
OwnerCompany Name on Record
Tax Bill$91,183 (2025)
Deeds & MortgagesAug 2017 Line of Credit
Flood ZoneZone X (minimal risk)
APN08-06-408-013

Property Details

APN / Parcel Number

Primary APN08-06-408-013

Interior

Units8 Units

Exterior

Lot Area145,926 sqft

Location & Zoning

Street Address603 E DIEHL RD
CityNAPERVILLE
StateIL
Zip60563-1452
Property CategoryCommercial
Property TypeCommercial > Retail
Local Zoning CodeC
Legal DescriptionCENTRE POINT TECH CENTER PHASE II ALL
Legal SubdivisionCENTRE POINT TECH CENTER PHASE II
Legal Phase2
Legal Lot Number2
JurisdictionDU PAGE IL
Township / Civil DivisionLISLE
Census Block Group1
Census Block1025
Census Tract846106

Owner

Source: DuPage County records, as of August 17, 2026

Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.

Owner of RecordCompany Name on Record
Mailing Address2901 FINLEY RD, 113, DOWNERS GROVE, IL 60515-1774
Owner TypeCompany
VestingCompany

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed NamesName on Deed
Last Transfer DateJul 31, 2017
Transfer Doc0000083550
Record UpdatedSep 20, 2026

August 2017: Warranty Deed, Transfer

Document TypeWarranty Deed
JurisdictionDU PAGE IL
Recording DateAug 15, 2017
Property Address603 E DIEHL RD, NAPERVILLE, IL 60563-1452
Document Number0000083550
Map ReferenceDOCR85-58201
Instrument DateJul 31, 2017
InstrumentR2017-083550
Transaction TypeTransfer
Record UpdatedDec 14, 2021
Title CompanyATTORNEY

Transaction

Tax$0.00
Amount AccuracyTransfer Tax Exempt
Additional
  • Arm's Length
  • Multiple Parcels

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
Address2901 FINLEY RD STE 113, 113, DOWNERS GROVE, IL 60515-1774

Mortgage

Document Number0000083551
DateAug 15, 2017
InstrumentR2017-083551
Lender
NameOLD SECOND NATIONAL BANK
TypeBank
Agreement
TypeLine of Credit
AmountAmount Recorded
Term120 Months
DueAug 1, 2027
Interest
Rate TypeAdjustable Rate
Rate2.5%

Tax Assessment & Valuation

Source: DuPage County assessment roll, as of August 17, 2026

Property Jurisdictions

TypeName
StateIllinois
CountyDuPage County
County SubdivisionLisle Township
MunicipalityNaperville City
Unified School DistrictNaperville Community Unit District 203 (PK - 12)

Tax Bill & Assessment History

YearTax BillAssessed ValueAssessed Market Value
2025$91,183.00 (+3.02%)$1,562,412 (+14.24%) Land $714,532 Building $847,880$4,687,236 (+14.24%) Land $2,143,596 Building $2,543,640
2022$88,511.00$1,367,620 Land $600,870 Building $766,750$4,102,860 Land $1,802,610 Building $2,300,250

Assessed value and assessed market value are set for property tax purposes and are not market price estimates.

Flood

Source: FEMA National Flood Hazard Layer, effective September 1, 2025

FEMA Flood ZoneZone X
minimal risk
Flood Insurance RequirementNot required
lenders may require it

Values are read at the parcel center point; lenders make the official flood determination.

Wildfire

Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024

Wildfire RiskLow
lower than 80% of the US · above 71% of Illinois
Wildfire Likelihood0.01% annual chance
ExposureIndirect
within ember reach

Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.

Drinking Water

Source: EPA Safe Drinking Water Information System, as of September 2026

Water SystemNAPERVILLE
serves 156,406 people · EPA ID IL0434670
Water SourcePurchased surface water from DU PAGE WATER COMMISSION
Last State InspectionSep 2025
Lead6 ppb (2026)
action level 15 ppb

Violations Reported to EPA

Water QualityNone
last 10 years
Treatment and ProcedureNone
last 10 years
Monitoring and Reporting15
last 3 years

Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes.

Internet Providers

Source: FCC Broadband Data Collection, based on 37 locations within half a mile, as of December 31, 2025

ProviderMax Down / Up (Mbps)
Xfinity
Cable		2,000 / 250
Verizon
Fixed Wireless		300 / 20
Starlink
Satellite		280 / 30
AT&T
Fixed Wireless		100 / 20
T-Mobile
Fixed Wireless		100 / 20

May also be available: Astound Broadband.

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