DuPage County property record for 323 Walnut Ln, Oak Brook, IL 60523
| Property Type | Single Family Home |
|---|---|
| Details | 2,387 sqft · built 1953 |
| Lot Size | 0.37 acres (16,117 sqft) |
| Owner | Individual Name on File |
| Tax Bill | $6,996 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 06-23-206-002 |
| Primary APN | 06-23-206-002 |
|---|
| Stories | 1 Story |
|---|---|
| Building Area | 2,387 sqft Living Area |
| 1st Floor Area | 1,943 sqft |
| Upper Floors Area | 444 sqft |
| Year Built | Built 1953 |
|---|---|
| Effective Year Built | Effective 1953 |
| Architectural Style | Ranch |
| Exterior Material | Combination |
| Construction Type | Brick |
| Lot Area | 16,117 sqft (0.37 acres) |
| Lot Dimensions | 19.1 ft deep x 8.5 ft wide |
| Garage Type | Attached |
| Parking Spaces | 1 Parking Space |
| Street Address | 16W323 WALNUT LN |
|---|---|
| City | OAK BROOK |
| State | IL |
| Zip | 60523 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R |
| Legal Description | TIMBER TRAIL ESTS TWO |
| Legal Subdivision | TIMBER TRAIL ESTS |
| Legal Lot Number | 129 |
| Jurisdiction | DU PAGE IL |
| Township / Civil Division | YORK |
| Census Block Group | 1 |
| Census Block | 1015 |
| Census Tract | 844601 |
323 Walnut Ln is owned and occupied by an individual who acquired it in November 2001.
Source: DuPage County records, as of August 17, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 323 WALNUT LN, OAK BROOK, IL 60523-1449 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Apr 22, 1999 |
| Deed Sale | Apr 22, 1999 |
| Deed Document Number | 199992247 |
| Last Transfer Date | Nov 6, 2001 |
| Transfer Doc | 0000246544 |
| Record Updated | Sep 20, 2026 |
The 2025 property tax bill for 323 Walnut Ln was $6,996 with a veteran's exemption.
Source: DuPage County assessment roll, as of August 17, 2026
| Type | Name |
|---|---|
| State | Illinois |
| County | DuPage County |
| County Subdivision | York Township |
| Municipality | Oak Brook Village |
| Secondary School District | DuPage High School District 88 (09 - 12) |
| Elementary School District | Salt Creek School District 48 (PK - 08) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $6,996.00 | $173,116 Land $90,804 Building $82,312 | $519,348 Land $272,412 Building $246,936 |
| 2022 | $4,038.00 Homeowner's exemption Senior Citizen's exemption | $142,670 Land $74,840 Building $67,830 | $428,010 Land $224,520 Building $203,490 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 323 Walnut Ln in Zone X, an area of minimal flood risk, within 500 ft of a high-risk flood zone.
Source: FEMA National Flood Hazard Layer, effective September 1, 2025 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Nearest Special Flood Hazard Area | Zone AE, within 500 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Flood Insurance Cost | Premium on File median of 21 individual policies |
| Community Rating System | Class 7 (15% premium discount) |
| Nearby Flood Policies | 47 units insured incl. 26 condo units |
| Nearby Flood Claims | 61 (1978–2020) |
| Claims Outside the SFHA | 4 of 61 |
| Most Recent Claim | May 2020 · rainfall accumulation |
| Claims by Event |
|
Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.
Wildfire risk around 323 Walnut Ln is low, with less than a 0.01% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 99.1% of the US · lower than 94% of Illinois |
|---|---|
| Wildfire Likelihood | Under 0.01% annual chance |
| Exposure | None beyond 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 | OAK BROOK serves 9,400 people · EPA ID IL0430700 |
|---|---|
| Water Source | Purchased surface water from several systems |
| Last State Inspection | Jun 2024 |
| Lead | Under 1 ppb (2024–2026) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | 3 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 218 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| Verizon Fixed Wireless | 300 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T DSL · Fiber, Fixed Wireless in parts of the area | 100 / 20 |
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