DuPage County property record for 503 North Ave, Naperville, IL 60540
| Property Type | Single Family Home |
|---|---|
| Details | 2 ba · 1,776 sqft · built 1862 |
| Lot Size | 0.24 acres (10,454 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $569,000 (Aug 2018) |
| Tax Bill | $13,969 (2025) |
| Deeds & Mortgages | Sep 2019 Mortgage Mar 2019 Mortgage + 3 more |
| Flood Zone | Zone X (minimal risk) |
| APN | 08-18-139-021 |
| Primary APN | 08-18-139-021 |
|---|
| Full Baths | 2 Baths |
|---|---|
| Stories | 2 Stories |
| Building Area | 1,776 sqft Living Area |
| Gross Area | 2,356 sqft |
| 1st Floor Area | 902 sqft |
| 2nd Floor Area | 874 sqft |
| Basement Area | 580 sqft |
| Year Built | Built 1862 |
|---|---|
| Effective Year Built | Effective 1862 |
| Lot Area | 10,454 sqft (0.24 acres) |
| Garage Area | 720 sqft |
| Parking Spaces | 3 Parking Spaces |
| Street Address | 503 NORTH AVE |
|---|---|
| City | NAPERVILLE |
| State | IL |
| Zip | 60540-4729 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R |
| Legal Description | LUSKS SUB ALL |
| Legal Subdivision | LUSKS SUB |
| Legal Block | 3 |
| Legal Lot Number | 1 |
| Jurisdiction | DU PAGE IL |
| Township / Civil Division | LISLE |
| Census Block Group | 3 |
| Census Block | 3009 |
| Census Tract | 846103 |
503 North Ave is owned and occupied by two individuals who bought it in August 2018.
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 Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 503 NORTH AVE, NAPERVILLE, IL 60540-4729 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Tenants by the Entirety |
| Date | Document |
|---|---|
| Sep 11, 2019 | Deed of Trust, Mortgage · Conventional Mortgage UNITED WHOLESALE MORTGAGE |
| Mar 6, 2019 | Deed of Trust, Mortgage · Conventional Mortgage UNITED WHOLESALE MORTGAGE |
| May 13, 2020 | Deed of Trust, Mortgage · Conventional Mortgage CMG MORTGAGE INC |
| Jan 21, 2021 | Deed of Trust, Mortgage · Conventional Mortgage CMG MORTGAGE INC |
| Aug 29, 2018 | Warranty Deed, Transfer · Conventional Mortgage CMG MORTGAGE INC |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Aug 29, 2018 · Amount on File |
| Deed Sale | Aug 29, 2018 · Amount on File |
| Prior Sale | May 18, 2009 · Amount on File |
| Deed Document Number | 201881524 |
| Prior Transfer Date | Feb 18, 2000 |
| Prior Transfer Doc | 0000031148 |
| Record Updated | Sep 20, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | DU PAGE IL |
| Property Address | 503 NORTH AVE, NAPERVILLE, IL 60540-4729 |
| Transaction Type | Mortgage |
| Record Updated | Dec 14, 2021 |
| Name | Verified Name |
|---|
| Document Number | 0000079944 |
|---|---|
| Date | Sep 11, 2019 |
| Instrument | R2019-079944 |
| Name | UNITED WHOLESALE MORTGAGE |
|---|---|
| Type | Mortgage Company |
| Address | PONTIAC, MI 48341 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Oct 1, 2049 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | DU PAGE IL |
| Property Address | 503 NORTH AVE, NAPERVILLE, IL 60540-4729 |
| Transaction Type | Mortgage |
| Record Updated | Dec 14, 2021 |
| Name | Verified Name |
|---|
| Document Number | 0000016408 |
|---|---|
| Date | Mar 6, 2019 |
| Instrument | R2019-016408 |
| Name | UNITED WHOLESALE MORTGAGE |
|---|---|
| Type | Mortgage Company |
| Address | PONTIAC, MI 48341 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 360 Months |
| Due | Mar 1, 2049 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | DU PAGE IL |
| Property Address | 503 NORTH AVE, NAPERVILLE, IL 60540-4729 |
| Transaction Type | Mortgage |
| Record Updated | Dec 14, 2021 |
| Name | Verified Name |
|---|
| Document Number | 0000047623 |
|---|---|
| Date | May 13, 2020 |
| Instrument | R2020-047623 |
| Name | CMG MORTGAGE INC |
|---|---|
| Type | Mortgage Company |
| Address | SAN RAMON, CA 94583 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 360 Months |
| Due | May 1, 2050 |
| Rate | 3.12% |
|---|
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | DU PAGE IL |
| Property Address | 503 NORTH AVE, NAPERVILLE, IL 60540-4729 |
| Transaction Type | Mortgage |
| Record Updated | Dec 14, 2021 |
| Name | Verified Name |
|---|
| Document Number | 0000011147 |
|---|---|
| Date | Jan 21, 2021 |
| Instrument | R2021-011147 |
| Name | CMG MORTGAGE INC |
|---|---|
| Type | Mortgage Company |
| Address | SAN RAMON, CA 94583 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 360 Months |
| Due | Jan 1, 2051 |
| Document Type | Warranty Deed |
|---|---|
| Jurisdiction | DU PAGE IL |
| Recording Date | Aug 29, 2018 |
| Property Address | 503 NORTH AVE, NAPERVILLE, IL 60540-4729 |
| Document Number | 0000081524 |
| Map Reference | DOC1353 |
| Instrument Date | Aug 8, 2018 |
| Instrument | R2018-081524 |
| Transaction Type | Transfer |
| Record Updated | Dec 14, 2021 |
| Title Company | FORWARD SETTLEMENT SOLUTION |
| Amount | Amount on Record |
|---|---|
| Downpayment | Downpayment on Record |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $2,560.50 |
| Amount Accuracy | Rounded by County |
| Additional |
|
| Name | Verified Name |
|---|---|
| Address | 503 NORTH AVE, 503, NAPERVILLE, IL 60540-4729 |
| Name | Verified Name |
|---|---|
| Relationship | Tenants by the Entirety |
| Address | 503 NORTH AVE, NAPERVILLE, IL 60540-4729 |
| Document Number | 0000081525 |
|---|---|
| Date | Aug 29, 2018 |
| Instrument | R2018-081525 |
| Name | CMG MORTGAGE INC |
|---|---|
| Type | Mortgage Company |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Sep 1, 2048 |
The 2025 property tax bill for 503 North Ave was $13,969 with a homeowner's exemption.
Source: DuPage County assessment roll, as of August 17, 2026
| Type | Name |
|---|---|
| State | Illinois |
| County | DuPage County |
| County Subdivision | Lisle Township |
| Municipality | Naperville City |
| Unified School District | Naperville Community Unit District 203 (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $13,969.00 | $247,357 Land $137,883 Building $109,474 | $742,071 Land $413,649 Building $328,422 |
| 2022 | $12,433.00 Homeowner's exemption | $198,110 Land $110,430 Building $87,680 | $594,330 Land $331,290 Building $263,040 |
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.
FEMA maps place 503 North Ave in Zone X, an area of minimal flood risk.
Source: FEMA National Flood Hazard Layer, effective September 1, 2025
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
Values are read at the parcel center point; lenders make the official flood determination.
The area around 503 North Ave has no burnable land within ember reach, so its wildfire risk is not rated.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Not rated no burnable land within ember reach |
|---|
Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.
Source: EPA Safe Drinking Water Information System, as of September 2026
| Water System | NAPERVILLE serves 156,406 people · EPA ID IL0434670 |
|---|---|
| Water Source | Purchased surface water from DU PAGE WATER COMMISSION |
| Last State Inspection | Sep 2025 |
| Lead | 6 ppb (2026) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | 15 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.
Source: FCC Broadband Data Collection, based on 404 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| Astound Broadband Cable | 1,500 / 50 |
| Verizon Fixed Wireless | 1,000 / 75 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T Fixed Wireless · DSL · Fiber in parts of the area | 100 / 20 |
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