Cook County property record for 910 S William St, Mount Prospect, IL 60056 · Last verified June 2026
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 1,244 sqft · built 1961 |
| Lot Size | 0.2 acres (8,712 sqft) |
| Owner | Trust Name on File |
| Tax Bill | $8,547 (2023) |
| Flood Zone | Zone X (minimal risk) |
| APN | 08-13-209-017 |
| Primary APN | 08-13-209-017 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 7 Rooms |
| Building Area | 1,244 sqft Living Area |
| Year Built | Built 1961 |
|---|---|
| Effective Year Built | Effective 1962 |
| Architectural Style | Split Level |
| Exterior Material | Brick/Stone |
| Construction Type | Frame |
| Roof Material | Asphalt |
| Lot Area | 8,712 sqft (0.2 acres) |
| Garage Type | Detached |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | HVAC |
|---|---|
| Heating System | HVAC |
| Street Address | 910 S WILLIAM ST |
|---|---|
| City | MOUNT PROSPECT |
| State | IL |
| Zip | 60056-4352 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | (CLEARBROOK) (ESTATES) SUB OF PT OF WH WH NE LYING N OF GOLF ROAD WH WH NE SEC 13-41-11 |
| Legal Range | 11E |
| Legal Township | 41N |
| Legal Section | 13 |
| Legal Subdivision | CLEARBROOK ESTATES |
| Legal Lot Number | 63 |
| Jurisdiction | COOK IL |
| Township / Civil Division | ELK GROVE |
| Census Block Group | 1 |
| Census Block | 1006 |
| Census Tract | 804902 |
Source: Cook County records · APN 08-13-209-017
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 | Trust Name on File |
|---|---|
| Mailing Address | 910 S WILLIAM ST, MOUNT PROSPECT, IL 60056-4352 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Trust, Personal Trust |
| Deed Names | Verified Name on Deed |
|---|---|
| Last Transfer Date | Oct 08, 2015 |
| Transfer Doc | 0000055047 |
| 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 | 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) |
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 | $41,000 (+20.59%) Land $10,454 Building $30,546 | $410,000 (+20.59%) Land $104,540 Building $305,460 | |
| 2023 | $8,547.00 (+4.36%) | ||
| 2022 | $8,190.00 Homeowner's exemption | $34,000 Land $8,712 Building $25,288 | $340,000 Land $87,120 Building $252,880 |
Source: FEMA National Flood Hazard Layer, Cook County (17031C), updated February 11, 2026 · FEMA OpenFEMA NFIP redacted claims and policies, census block group 170318049021, 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 6 (20% premium discount) |
| Nearby Flood Policies | 3 in force |
| Nearby Flood Claims | 16 (1978–2011) |
| Claims Outside the SFHA | 1 of 16 |
| Most Recent Claim | Jul 2011, river or lake flooding |
| Claims By Storm |
|
| 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 504 locations within about half a mile of this property
| Provider | Technology | Download / Upload (Mbps) |
|---|---|---|
| Xfinity | Cable | 2,000 / 250 |
| Radiate Holdings | Cable | 1,500 / 50 |
| Verizon | Fixed Wireless | 1,000 / 75 |
| T-Mobile USA | Fixed Wireless | 100 / 20 |
| AT&T | DSL | 100 / 20 |
May also be available at this address: AT&T. Availability varies by address; speeds are provider-advertised maximums, not measured.
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