Cook County property record for 209 N William St, Mount Prospect, IL 60056
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 1 ba · 1,230 sqft · built 1954 |
| Lot Size | 0.2 acres (8,721 sqft) |
| Owner | Company Name on File |
| Last Sale | $363,296 (May 2026) |
| Tax Bill | $6,126 (2023) |
| Deeds & Mortgages | May 2026 Foreclosure |
| Flood Zone | Zone X (minimal risk) |
| APN | 03-34-424-010 |
| Primary APN | 03-34-424-010 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 6 Rooms |
| Stories | 1 Story |
| Building Area | 1,230 sqft Living Area |
| 1st Floor Area | 1,230 sqft |
| Year Built | Built 1954 |
|---|---|
| Effective Year Built | Effective 1955 |
| Architectural Style | Bungalow |
| Exterior Material | Frame |
| Construction Type | Frame |
| Roof Material | Asphalt |
| Lot Area | 8,721 sqft (0.2 acres) |
| Garage Type | Detached |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | HVAC |
|---|---|
| Heating System | HVAC |
| Street Address | 209 N WILLIAM ST |
|---|---|
| City | MOUNT PROSPECT |
| State | IL |
| Zip | 60056-2546 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Range | 11E |
| Legal Township | 42N |
| Legal Section | 34 |
| Legal Subdivision | BLUETTS |
| Legal Block | 10 |
| Legal Lot Number | 19 |
| Jurisdiction | COOK IL |
| Township / Civil Division | WHEELING |
| Census Block Group | 3 |
| Census Block | 3026 |
| Census Tract | 802802 |
209 N William St is owned by a company that bought it in May 2026.
Source: Cook County records, as of October 21, 2026
| Owner of Record | Company Name on File |
|---|---|
| Mailing Address | 2401 NW 23RD ST, 1A1, OKLAHOMA CITY, OK 73107-2448 |
| Owner Type | Company |
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 | May 1, 2026 · Amount on File |
| Deed Sale | May 1, 2026 · Amount on File |
| Deed Document Number | 202619073 |
| Prior Transfer Date | Jan 20, 2026 |
| Prior Transfer Doc | 0000019073 |
| Record Updated | Oct 29, 2026 |
| Document Type | Trustee's Deed |
|---|---|
| Jurisdiction | COOK IL |
| Recording Date | May 1, 2026 |
| Property Address | 209 N WILLIAM ST, MOUNT PROSPECT, IL 60056-2546 |
| Document Number | 0000019073 |
| Instrument Date | Jan 20, 2026 |
| Instrument | 202619073 |
| Transaction Type | Foreclosure |
| Record Updated | Aug 28, 2026 |
| Title Company | NONE LISTED ON DOCUMENT |
| Amount | Amount on Record |
|---|---|
| Tax | $36,693.30 |
| Amount Accuracy | Calculated from Transfer Tax |
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|
Source: Cook County assessment roll, as of May 27, 2026
| Type | Name |
|---|---|
| State | Illinois |
| County | Cook County |
| County Subdivision | Wheeling Township |
| Municipality | Mount Prospect Village |
| Secondary School District | Township High School District 214 (09 - 12) |
| Elementary School District | Mount Prospect School District 57 (PK - 08) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $30,000 Land $7,849 Building $22,151 | $300,000 Land $78,490 Building $221,510 | |
| 2023 | $6,126.00 (+658.17%) | ||
| 2022 | $808.00 Homeowner's exemption Senior Citizen's exemption | $27,999 Land $6,322 Building $21,677 | $279,990 Land $63,220 Building $216,770 |
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 209 N William St in Zone X, an area of minimal flood risk, though there have been 9 flood claims nearby since 1993.
Source: FEMA National Flood Hazard Layer, effective February 11, 2026 · 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 |
| Community Rating System | Class 6 (20% premium discount) |
| Nearby Flood Policies | 1 in force |
| Nearby Flood Claims | 9 (1993–2020) |
| Claims Outside the SFHA | 9 of 9 |
| Most Recent Claim | May 2020 · other causes |
| 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.
The area around 209 N William St has no burnable land within ember reach, so its wildfire risk is not rated.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Not rated no burnable land within 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 | MOUNT PROSPECT serves 41,000 people · EPA ID IL0311980 |
|---|---|
| Water Source | Purchased surface water from NORTHWEST SUBURBAN MUNICIPAL JAWA |
| Last State Inspection | Aug 2025 |
| Lead | 2 ppb (2026–2028) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | 11 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. The service area is an EPA estimate; the actual supplier may differ.
Source: FCC Broadband Data Collection, based on 579 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| Astound Broadband Cable | 1,500 / 50 |
| Verizon Fixed Wireless | 1,000 / 75 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T Fixed Wireless · DSL · Fiber in parts of the area | 100 / 20 |
Search by:
By searching, you agree to: Terms • Privacy • Disclosures