Cook County property record for 22 S William St, Mount Prospect, IL 60056
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 1.5 ba · 1,803 sqft · built 1956 |
| Lot Size | 0.33 acres (14,379 sqft) |
| Owner | 2 Trust Names on File |
| Last Sale | $310,000 (Apr 2001) |
| Tax Bill | $10,450 (2023) |
| Deeds & Mortgages | Jun 2018 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 08-12-201-022 |
| Primary APN | 08-12-201-022 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 1.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 8 Rooms |
| Stories | 1 Story |
| Building Area | 1,803 sqft Living Area |
| 1st Floor Area | 1,803 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1956 |
|---|---|
| Effective Year Built | Effective 1956 |
| Architectural Style | Ranch |
| Exterior Material | Brick/Stone |
| Construction Type | Masonry / Concrete Block |
| Roof Material | Asphalt |
| Lot Area | 14,379 sqft (0.33 acres) |
| Garage Type | Attached |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Hot Water |
| Street Address | 22 S WILLIAM ST |
|---|---|
| City | MOUNT PROSPECT |
| State | IL |
| Zip | 60056-3321 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Range | 11E |
| Legal Township | 41N |
| Legal Section | 12 |
| Legal Subdivision | BUSSES EASTERN ADD |
| Legal Block | 6 |
| Legal Lot Number | 22,21 |
| Jurisdiction | COOK IL |
| Township / Civil Division | ELK GROVE |
| Census Block Group | 1 |
| Census Block | 1006 |
| Census Tract | 804901 |
22 S William St is owner-occupied and held in a trust since September 2024.
Source: Cook County records, as of May 27, 2026
| Owner of Record | 2 Trust Names on File |
|---|---|
| Mailing Address | 22 S WILLIAM ST, MOUNT PROSPECT, IL 60056-3321 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust |
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 | 2 Names on Deed |
|---|---|
| Last Sale | Apr 30, 2001 · Amount on File |
| Deed Sale | Apr 30, 2001 · Amount on File |
| Deed Document Number | 200152752 |
| Last Transfer Date | Sep 4, 2024 |
| Transfer Doc | 0000020028 |
| Record Updated | Sep 20, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | COOK IL |
| Property Address | 22 S WILLIAM ST, MOUNT PROSPECT, IL 60056-3321 |
| Document Number | 1817706029 |
| Instrument Date | Jun 20, 2018 |
| Transaction Type | Mortgage |
| Record Updated | Jul 10, 2018 |
| Title Company | CHICAGO TITLE COMPANY |
| Name | Verified Name |
|---|---|
| Address | 19101 BOULDER RIDGE CT MOKENA IL 604488215, MOKENA, IL 60448-8215 |
| Document Number | 1817706029 |
|---|---|
| Date | Jun 26, 2018 |
| Instrument | 17706029 |
| Name | PRIME LNDG |
|---|---|
| Address | DALLAS, TX 75252 |
| Amount | Amount on Record |
|---|---|
| Term | 360 Months |
| Due | Jun 25, 2048 |
| Rate | 5.37% |
|---|
Source: Cook County assessment roll, as of May 27, 2026
| Type | Name |
|---|---|
| State | Illinois |
| County | Cook County |
| County Subdivision | Elk Grove 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 | $51,000 Land $16,536 Building $34,464 | $510,000 Land $165,360 Building $344,640 | |
| 2023 | $10,450.00 (+4.29%) | ||
| 2022 | $10,020.00 Homeowner's exemption | $40,831 Land $13,660 Building $27,171 | $408,310 Land $136,600 Building $271,710 |
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 22 S William St in Zone X, an area of minimal flood risk, though there have been 1 flood claim nearby since 1990.
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 | 2 in force |
| Nearby Flood Claims | 1 (1990) |
| Most Recent Claim | Aug 1990 · other causes |
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 22 S 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 612 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 |
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