DuPage County property record for 9S525 Allison Ct, Willowbrook, IL 60527 · Last verified August 2026
| Property Type | Single Family Home |
|---|---|
| Details | 2.5 ba · 1,836 sqft · built 1979 |
| Lot Size | 0.35 acres (15,246 sqft) |
| Owner | Company Name on File |
| Last Sale | $260,000 (Aug 2002) |
| Tax Bill | $8,681 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 09-35-306-027 |
| Primary APN | 09-35-306-027 |
|---|
| Full Baths | 2.5 Baths |
|---|---|
| Half Baths | 1 Half Bath |
| Stories | 1 Story |
| Building Area | 1,836 sqft Living Area |
| Gross Area | 2,706 sqft |
| 1st Floor Area | 1,836 sqft |
| Basement Area | 870 sqft |
| Year Built | Built 1979 |
|---|---|
| Effective Year Built | Effective 1979 |
| Exterior Material | Brick |
| Construction Type | Frame |
| Lot Area | 15,246 sqft (0.35 acres) |
| Garage Area | 462 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|
| Street Address | 9S525 ALLISON CT |
|---|---|
| City | HINSDALE |
| State | IL |
| Zip | 60521 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | BEECHEN & DILLS CLARENDON HEIGHTS SOUTH ALL |
| Legal Subdivision | BEECHEN & DILLS CLARENDON HEIGHTS |
| Legal Lot Number | 25 |
| Jurisdiction | DU PAGE IL |
| Township / Civil Division | DOWNERS GROVE |
| Census Block Group | 1 |
| Census Block | 1013 |
| Census Tract | 845805 |
Source: DuPage County records · APN 09-35-306-027
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 | Company Name on File |
|---|---|
| Mailing Address | 9S525 ALLISON CT, WILLOWBROOK, IL 60527-7041 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Deed Names | Verified Name on Deed |
|---|---|
| Last Sale | Aug 23, 2002 · Amount on Record |
| Deed Sale | Aug 23, 2002 · Amount on Record |
| Prior Sale | Aug 08, 1996 · Amount on Record |
| Deed Document Number | 2002219620 |
| Record Updated | Sep 20, 2026 |
Source: DuPage County records · Assessment roll updated August 17, 2026 · Last verified August 2026
| Type | Name |
|---|---|
| State | Illinois |
| County | DuPage County |
| County Subdivision | Downers Grove Township |
| Elementary School District | Cass School District 63 (PK - 08) |
| Secondary School District | Hinsdale Township High School District 86 (09 - 12) |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $8,681.00 (+10.53%) | $160,531 (+21.01%) Land $60,881 Building $99,650 | $481,593 (+21.01%) Land $182,643 Building $298,950 |
| 2022 | $7,854.00 Homeowner's exemption | $132,660 Land $50,310 Building $82,350 | $397,980 Land $150,930 Building $247,050 |
Source: FEMA National Flood Hazard Layer, DuPage County (17043C), updated September 1, 2025 · FEMA OpenFEMA NFIP redacted claims and policies, census block group 170438458051, refreshed September 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026
| FEMA Flood Zone | Zone X |
|---|---|
| Special Flood Hazard Area | No |
| Flood Hazard | Minimal |
| 500-Year Floodplain | No |
| Community Rating System | Class 5 (25% premium discount) |
| Nearby Flood Policies | 5 in force |
| 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; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.
Source: FCC Broadband Data Collection, availability as of December 31, 2025 · Published October 2026 · based on 233 locations within about half a mile of this property
| Provider | Technology | Download / Upload (Mbps) |
|---|---|---|
| Xfinity | Cable | 2,000 / 250 |
| Verizon | Fixed Wireless | 300 / 20 |
| T-Mobile USA | Fixed Wireless | 100 / 20 |
| AT&T | Fixed Wireless | 100 / 20 |
| AT&T | DSL | 100 / 20 |
Availability varies by address; speeds are provider-advertised maximums, not measured.
5G and 4G LTE
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