Cook County property record for 820 William St, River Forest, IL 60305
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2.5 ba · 2,801 sqft · built 1944 |
| Lot Size | 0.212 acres (9,212 sqft) |
| Owner | Individual Name on File |
| Last Sale | $340,000 (Jun 1998) |
| Tax Bill | $21,189 (2023) |
| Flood Zone | Zone X (minimal risk) |
| APN | 15-01-415-017 |
| Primary APN | 15-01-415-017 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 10 Rooms |
| Stories | 2 Stories |
| Building Area | 2,801 sqft Living Area |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1944 |
|---|---|
| Effective Year Built | Effective 1944 |
| Architectural Style | Old Style |
| Exterior Material | Brick/Stone |
| Construction Type | Masonry / Concrete Block |
| Roof Material | Slate |
| Lot Area | 9,212 sqft (0.212 acres) |
| Garage Type | Attached |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | HVAC |
| Street Address | 820 WILLIAM ST |
|---|---|
| City | RIVER FOREST |
| State | IL |
| Zip | 60305-1455 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | (SUBDIVISION) OF BLK 12 EX W128FT OF S125FT BLK13 IN BOGUES ADD TO OAK PK SEC 01-39-12 |
| Legal Range | 12E |
| Legal Township | 39N |
| Legal Section | 01 |
| Legal Subdivision | BOGUES ADD |
| Legal Block | 12,13 |
| Legal Lot Number | 10 |
| Jurisdiction | COOK IL |
| Township / Civil Division | RIVER FOREST |
| Census Block Group | 3 |
| Census Block | 3022 |
| Census Tract | 811900 |
Source: Cook County records · APN 15-01-415-017
Assessment roll updated May 27, 2026 · Last verified June 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 File |
|---|---|
| Mailing Address | 820 WILLIAM ST, RIVER FOREST, IL 60305-1455 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | Verified Name on Deed |
|---|---|
| Last Sale | Jun 05, 1998 · Amount on Record |
| Deed Sale | Jun 05, 1998 · Amount on Record |
| Deed Document Number | 1998144 |
| Record Updated | Sep 20, 2026 |
Source: Cook County records · Assessment roll updated May 27, 2026 · Last verified June 2026
| Type | Name |
|---|---|
| State | Illinois |
| County | Cook County |
| County Subdivision | River Forest Township |
| Municipality | River Forest Village |
| Secondary School District | Oak Park and River Forest District 200 (09 - 12) |
| Elementary School District | River Forest School District 90 (PK - 08) |
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.
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $80,715 (+14.86%) Land $11,054 Building $69,661 | $807,150 (+14.86%) Land $110,540 Building $696,610 | |
| 2023 | $21,189.00 (-1.84%) | ||
| 2022 | $21,587.00 Homeowner's exemption | $70,270 Land $22,569 Building $47,701 | $702,700 Land $225,690 Building $477,010 |
Source: FEMA National Flood Hazard Layer as of February 11, 2026 · FEMA NFIP claims and policies as of September 2026 · USDA Forest Service Wildfire Risk to Communities as of 2024 · Last verified October 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Community Rating System | Class 7 (15% premium discount) |
| Nearby Flood Policies | 3 in force |
| Nearby Flood Claims | 2 (2014) |
| Claims Outside the SFHA | 2 of 2 |
| Most Recent Claim | Jul 2014 · rainfall accumulation |
| Wildfire Risk | Not rated no burnable land within 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: NPS National Register of Historic Places as of August 1, 2026 · Last verified October 2026
| Individually Listed | River Forest Historic District listed 1977 · 620 contributing resources · NRIS 77000483 |
|---|
Federal listing alone does not restrict alterations; local historic district rules, which this data does not cover, may apply.
Source: FCC Broadband Data Collection as of December 31, 2025 · Last verified October 2026
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber · Fixed Wireless, DSL in parts of the area | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Verizon Fixed Wireless | 300 / 20 |
| T-Mobile USA Fixed Wireless | 100 / 20 |
Based on FCC filings for 374 locations within half a mile of this property.
Source: EPA Safe Drinking Water Information System as of 2026 Q3 · EPA water system boundaries as of March 2026 · Last verified October 2026
| Water System | RIVER GROVE serves 10,282 people |
|---|---|
| Water Source | Purchased surface water from several systems |
| Last State Inspection | Dec 2024 |
| Lead | 6 ppb (2025) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | 2 last 3 years |
Results are for the whole water system as reported to EPA, not water tested at this address; lead at the tap also depends on the building's own pipes. The full violation and enforcement history is in the system's EPA record.
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