521 E 12th Ave, Naperville, IL 60563 Property Records

DuPage County property record for 521 E 12th Ave, Naperville, IL 60563 · Last verified August 2026

Property Highlights

Property Type	Residential > Single Family > Home
Bedrooms	3 Beds
Bathrooms	2 Baths
Year Built	Built 1967
Square Footage	2,665 sqft Living Area
Lot Size	11,326 sqft (0.26 acres)
Occupancy	Owner Occupied
Last Sale	$380,000 (2004)
Tax Bill	$11,378.00 (2025)

Property Details

APN / Parcel Number

Primary APN	`08-07-303-018`

Interior

Bedrooms	3 Beds
Full Baths	2 Baths
Partial Baths	2 Partial Baths
Total Rooms	9 Rooms
Building Area	2,665 sqft Living Area
Gross Area	3,107 sqft Gross Area
1st Floor	1,407 sqft 1st Floor
2nd Floor	850 sqft 2nd Floor
Basement Area	850 sqft Basement
Finished Basement	408 sqft Finished
Unfinished Basement	442 sqft Unfinished
Stories	2 Stories
Fireplace	Fireplace
Fireplaces	1 Fireplaces

Exterior

Year Built	Built 1967
Effective Year Built	Effective 1967
Architectural Style	Traditional Style
Exterior Material	Brick Exterior
Lot Area	11,326 sqft (0.26 acres)
Parking Spaces	2 Parking Spaces
Garage Area	441 sqft Garage

Utilities and HVAC

Cooling System	Central Cooling
Heating System	HVAC Heating
Water Source	Commercial Water Source

Location & Zoning

Street Address	521 E 12TH AVE
City	NAPERVILLE
State	IL
Zip	60563-2809
Property Usage	Residential Property Usage
Type	Residential > Single Family > Home
Legal Description	SAYBROOK UNIT #2
Legal Subdivision	SAYBROOK
Legal Block	2
Legal Lot Number	18
Legal Unit	2
Jurisdiction	DU PAGE IL
Minor Civil Division	LISLE
Census Blockgroup	1
Census Block	1021
Census Tract	846105

Owner

Source: DuPage County records · APN 08-07-303-018

Assessment roll updated August 17, 2026 · Last verified August 2026

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of Record	2 Individual Names on File
Mailing Address	521 E 12TH AVE, NAPERVILLE, IL 60563-2809
Occupancy	Owner Occupied
Owner Type	Owner is an Individual, Couple or Unincorporated Entity

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Verified Names on Deed
Last Sale	Dec 10, 2004 · Amount on Record
Deed Sale	Dec 10, 2004 · Amount on Record
Deed Doc Number	2004310432
Prior Transfer Date	Nov 02, 2001
Prior Transfer Doc	0000251852
Record Refreshed	Sep 20, 2026

Tax Assessment & Valuation

Source: DuPage County records · Assessment roll updated August 17, 2026 · Last verified August 2026

Property Jurisdictions

Type	Name
State	Illinois
County	DuPage County
County Subdivision	Lisle Township
Municipality	Naperville City
Unified School District	Naperville Community Unit District 203 (PK - 12)

Tax Bill & Assessment History

Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.

Year	Tax Bill	Assessed Value	Assessed Market Value
2025	$11,378.00 (+3.76%) Homeowner's exemption	$202,966 (+8.53%) Land $82,718 Building $120,248	$608,898 (+8.53%) Land $248,154 Building $360,744
2024	$10,966.00 (+4.77%)	$187,014 (+11.49%) Land $76,217 Building $110,797	$561,042 (+11.49%) Land $228,651 Building $332,391
2022	$10,467.00 Homeowner's exemption	$167,740 Land $66,620 Building $101,120	$503,220 Land $199,860 Building $303,360

Flood & Wildfire

Source: FEMA National Flood Hazard Layer, DuPage County (17043C), updated September 1, 2025 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026

Flood

FEMA Flood Zone	Zone X
Flood Hazard	Minimal
500-Year Floodplain	No
Special Flood Hazard Area	No

Wildfire

Wildfire Risk	Not rated no burnable land in reach
Wildfire Likelihood	Negligible
Exposure	None beyond ember reach

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