DuPage County property record for 328 Walnut Ln, Oak Brook, IL 60523
| Property Type | Single Family Home |
|---|---|
| Details | 2,497 sqft · built 1956 |
| Lot Size | 0.58 acres (25,265 sqft) |
| Owner | Individual Name on File |
| Last Sale | $597,000 (Dec 2025) |
| Tax Bill | $8,625 (2024) |
| Deeds & Mortgages | Jul 2026 Line of Credit Dec 2025 Sale + 2 more |
| Flood Zone | Zone AE (high risk) |
| APN | 06-23-203-009 |
| Primary APN | 06-23-203-009 |
|---|---|
| Alternative APN |
|
| Building Area | 2,497 sqft Living Area |
|---|---|
| 1st Floor Area | 1,972 sqft |
| 2nd Floor Area | 525 sqft |
| Year Built | Built 1956 |
|---|---|
| Effective Year Built | Effective 1956 |
| Architectural Style | Split Level |
| Exterior Material | Combination |
| Construction Type | Brick |
| Lot Area | 25,265 sqft (0.58 acres) |
| Lot Dimensions | 18.4 ft deep x 13 ft wide |
| Garage Type | Attached |
| Parking Spaces | 2 Parking Spaces |
| Old Parcel Number | 0623203009 |
|---|---|
| Street Address | 328 WALNUT LN |
| City | OAK BROOK |
| State | IL |
| Zip | 60523-1436 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R |
| Legal Description | 328 WALNUT LANE CONSOLI ALL |
| Legal Subdivision | 328 WALNUT LANE |
| Legal Lot Number | 12,11 |
| Jurisdiction | DU PAGE IL |
| Township / Civil Division | YORK |
| Census Block Group | 1 |
| Census Block | 1013 |
| Census Tract | 844601 |
328 Walnut Ln is owned and occupied by an individual who bought it in December 2025.
Source: DuPage County records, as of August 17, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 328 WALNUT LN, OAK BROOK, IL 60523-1436 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Single |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Date | Document |
|---|---|
| Jul 8, 2026 | Deed of Trust, Mortgage · Line of Credit COASTAL COMMUNITY BANK |
| Dec 4, 2025 | Warranty Deed, Transfer ATTORNEY ONLY, ATTORNEY |
| Dec 4, 2025 | Warranty Deed, Transfer · Conventional Mortgage ROCKET MORTGAGE LLC |
| Oct 8, 2025 | Deed, Transfer CHICAGO TITLE COMPANY, CHICAGO TITLE INSURANCE CO |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Dec 4, 2025 · Amount on File |
| Deed Sale | Dec 4, 2025 · Amount on File |
| Prior Sale | Oct 8, 2025 · Amount on File |
| Deed Document Number | 202578073 |
| Prior Transfer Date | Jan 30, 1997 |
| Prior Transfer Doc | 0000015035 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | DU PAGE IL |
| Recording Date | Jul 8, 2026 |
| Property Address | 328 WALNUT LN, OAK BROOK, IL 60523-1436 |
| Document Number | 0000046267 |
| Instrument Date | Jul 2, 2026 |
| Instrument | 202646267 |
| Transaction Type | Mortgage |
| Record Updated | Jul 21, 2026 |
| Title Company | NONE LISTED ON DOCUMENT |
| Name | Verified Name |
|---|---|
| Address | 328 WALNUT LN, OAK BROOK, IL 60523-1436 |
| Document Number | 0000046267, |
|---|---|
| Date | Jul 8, 2026 |
| Instrument | 202646267 |
| Name | COASTAL COMMUNITY BANK |
|---|
| Type | Line of Credit |
|---|---|
| Amount | Amount on Record |
| Rate Type | Adjustable Rate |
|---|---|
| Rate | 6.48% |
| Initial Type | Adjustable Rate |
| Adjustable | Adjustable Rate Rider |
| Max Rate | -1% |
| Document Type | Warranty Deed |
|---|---|
| Jurisdiction | DU PAGE IL |
| Recording Date | Dec 4, 2025 |
| Property Address | 328 WALNUT LN, OAK BROOK, IL 60523-1436 |
| Document Number | 0000078073 |
| Map Reference | DOC R2025-042536 |
| Instrument Date | Oct 30, 2025 |
| Instrument | R2025-078073 |
| Transaction Type | Transfer |
| Record Updated | Dec 24, 2025 |
| Title Company | ATTORNEY ONLY, ATTORNEY |
| Amount | Amount on Record |
|---|---|
| Tax | $597.00 |
| Amount Accuracy | Rounded by County |
| Additional |
|
| Name | Verified Name |
|---|---|
| Address | 36W995 RED GATE RD, SAINT CHARLES, IL 60175-6223 |
| Name | Verified Name |
|---|---|
| Address | 328 WALNUT LN, OAK BROOK, IL 60523-1436 |
| Document Type | Warranty Deed |
|---|---|
| Jurisdiction | DU PAGE IL |
| Recording Date | Dec 4, 2025 |
| Property Address | 328 WALNUT LN, OAK BROOK, IL 60523-1436 |
| Document Number | 0000078073 |
| Map Reference | DOC R2025-042536 |
| Instrument Date | Oct 30, 2025 |
| Instrument | R2025-078073 |
| Transaction Type | Transfer |
| Record Updated | Jan 7, 2026 |
| Title Company | CTIC DUPAGE, CTC DUPAGE |
| Amount | Amount on Record |
|---|---|
| Downpayment | Downpayment on Record |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $597.00 |
| Amount Accuracy | Rounded by County |
| Additional |
|
| Name | Verified Name |
|---|---|
| Address | 36W995 RED GATE RD, SAINT CHARLES, IL 60175-6223 |
| Name | Verified Name |
|---|---|
| Address | 328 WALNUT LN, OAK BROOK, IL 60523-1436 |
| Document Number | 0000078074 |
|---|---|
| Date | Dec 4, 2025 |
| Instrument | R2025-078074 |
| Name | ROCKET MORTGAGE LLC |
|---|---|
| Type | Mortgage Company |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 360 Months |
| Due | Dec 1, 2055 |
| Rate | 6.87% |
|---|
| Document Type | Deed |
|---|---|
| Jurisdiction | DU PAGE IL |
| Recording Date | Oct 8, 2025 |
| Property Address | 328 WALNUT LN, OAK BROOK, IL 60523-1436 |
| Document Number | 0000063544 |
| Map Reference | DOC R2025-042536 |
| Instrument Date | Oct 7, 2025 |
| Instrument | R2025-063544 |
| Transaction Type | Transfer |
| Record Updated | Oct 29, 2025 |
| Title Company | CHICAGO TITLE COMPANY, CHICAGO TITLE INSURANCE CO |
| Amount | Amount on Record |
|---|---|
| Tax | $495.00 |
| Amount Accuracy | Rounded by County |
| Additional |
|
| Name | Verified Name |
|---|---|
| Address | 328 WALNUT LN, OAK BROOK, IL 60523-1436 |
| Name | Verified Name |
|---|---|
| Address | 36W995 RED GATE RD, SAINT CHARLES, IL 60175-6223 |
| Investor | Possibly a Property Investor |
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 | $212,385 (+4.72%) Land $134,230 Building $78,155 | $637,155 (+4.72%) Land $402,690 Building $234,465 | |
| 2024 | $8,625.00 Homeowner's exemption Veteran's exemption | $202,806 Land $124,448 Building $78,358 | $608,418 Land $373,344 Building $235,074 |
| 2022 | $7,230.00 Homeowner's exemption Senior Citizen's exemption | $180,270 Land $110,620 Building $69,650 | $540,810 Land $331,860 Building $208,950 |
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 328 Walnut Ln in Zone AE, a high-risk flood area; flood insurance is required for federally backed loans.
Source: FEMA National Flood Hazard Layer, effective September 1, 2025 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone AE high risk |
|---|---|
| 100-Year Floodplain | Yes 1% annual chance |
| Floodway | No |
| Base Flood Elevation | Varies along the reach; see FIRM |
| Flood Insurance Requirement | Required federally backed loans |
| 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 328 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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