DuPage County property record for 321 Oak Brook Rd, Oak Brook, IL 60523
| Property Type | Single Family Home |
|---|---|
| Details | 5,366 sqft · built 1940 |
| Lot Size | 3.68 acres (160,736 sqft) |
| Owner | Individual Name on Record |
| Last Sale | $1,400,000 (Oct 2024) |
| Tax Bill | $15,612 (2025) |
| Deeds & Mortgages | Dec 2021 Line of Credit |
| Flood Zone | Zone X (minimal risk) |
| APN | 06-36-200-018 |
| Primary APN | 06-36-200-018 |
|---|
| Stories | 1 Story |
|---|---|
| Building Area | 5,366 sqft Living Area |
| Gross Area | 7,388 sqft |
| 1st Floor Area | 4,242 sqft |
| 2nd Floor Area | 1,124 sqft |
| Basement Area | 2,022 sqft |
| Year Built | Built 1940 |
|---|---|
| Effective Year Built | Effective 1940 |
| Architectural Style | Ranch |
| Exterior Material | Brick |
| Construction Type | Brick |
| Lot Area | 160,736 sqft |
| Lot Dimensions | 61.5 ft deep x 24.9 ft wide |
| Garage Type | Attached |
| Parking Spaces | 3 Parking Spaces |
| Street Address | 321 OAK BROOK RD |
|---|---|
| City | OAK BROOK |
| State | IL |
| Zip | 60523-2317 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R |
| Legal Description | YORK TWP SUPV ASSMT PLAT 11 LOT 8 & 33 FT STRIP ADJ ON W |
| Legal Subdivision | YORK TWP SUPV ASSMT PLAT |
| Legal Lot Number | 8,33 |
| Jurisdiction | DU PAGE IL |
| Township / Civil Division | YORK |
| Census Block Group | 2 |
| Census Block | 2019 |
| Census Tract | 844601 |
Source: DuPage County records, as of August 17, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Individual Name on Record |
|---|---|
| Mailing Address | 1504 HILL AVE, WHEATON, IL 60187-5831 |
| Owner Type | Individual |
| Vesting | Married Man, Separate Property |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Oct 25, 2024 · Amount on Record |
| Deed Sale | Oct 25, 2024 · Amount on Record |
| Deed Document Number | 202463759 |
| Prior Transfer Date | Nov 18, 2016 |
| Prior Transfer Doc | 0000136397 |
| Record Updated | Sep 20, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | DU PAGE IL |
| Property Address | 321 OAK BROOK RD, OAK BROOK, IL 60523-2317 |
| Transaction Type | Mortgage |
| Record Updated | Jun 9, 2026 |
| Title Company | FIDELITY NATIONAL TITLE |
| Name | Verified Name |
|---|---|
| Investor | Possibly a Property Investor |
| Document Number | 0000185167 |
|---|---|
| Date | Dec 30, 2021 |
| Instrument | R2021-185167 |
| Name | HEARTLAND BANK & TRUST CO |
|---|---|
| Type | Bank |
| Address | WESTERN SPRINGS, IL 60558 |
| Type | Line of Credit |
|---|---|
| Amount | Amount Recorded |
| Rate Type | Adjustable Rate |
|---|---|
| Change Frequency | Monthly |
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 |
| Elementary School District | Butler School District 53 (KG - 08) |
| Secondary School District | Hinsdale Township High School District 86 (09 - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $15,612.00 (+17.93%) | $442,450 (+21.34%) Land $89,066 Building $353,384 | $1,327,350 (+21.34%) Land $267,198 Building $1,060,152 |
| 2022 | $13,238.00 Homeowner's exemption Senior Citizen's exemption | $364,640 Land $73,400 Building $291,240 | $1,093,920 Land $220,200 Building $873,720 |
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.
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 |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Flood Insurance Cost | Premium on Record median of 35 individual policies |
| Community Rating System | Class 7 (15% premium discount) |
| Nearby Flood Policies | 256 units insured incl. 221 condo units |
| Nearby Flood Claims | 68 (1979–2026) |
| Claims Outside the SFHA | 10 of 68 |
| Most Recent Claim | Jul 2026 · 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.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 94% of the US · lower than 65% of Illinois |
|---|---|
| Wildfire Likelihood | 0.02% annual chance |
| Exposure | Direct burnable vegetation |
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 62 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 |
5G (outdoors only) and 4G LTE
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