Cook County property record for 3620 Blackstone Ave, Markham, IL 60428 · Last verified June 2026
| Property Type | Single Family Home |
|---|---|
| Details | 2 bd · 1 ba · 843 sqft · built 1948 |
| Lot Size | 0.406 acres (17,677 sqft) |
| Owner | Individual Name on File |
| Last Sale | $59,000 (May 1998) |
| Tax Bill | $3,862 (2023) |
| Flood Zone | Zone X (minimal risk) |
| APN | 28-23-120-004 |
| Primary APN | 28-23-120-004 |
|---|---|
| Alternative APN |
|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 4 Rooms |
| Stories | 1 Story |
| Building Area | 843 sqft Living Area |
| 1st Floor Area | 843 sqft |
| Year Built | Built 1948 |
|---|---|
| Effective Year Built | Effective 1948 |
| Exterior Material | Wood |
| Construction Type | Frame |
| Foundation Type | No Foundation |
| Roof Material | Asphalt |
| Lot Area | 17,677 sqft (0.406 acres) |
| Garage Type | Detached |
| Parking Spaces | 1 Parking Space |
| Cooling System | HVAC |
|---|---|
| Heating System | HVAC |
| Street Address | 3620 BLACKSTONE AVE |
|---|---|
| City | MARKHAM |
| State | IL |
| Zip | 60428-4421 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | A T (MCINTOSH) & COS (SOUTHTOWN) MANOR (UNIT2) SUB IN NW S OF IBL NW SEC 23-36-13 |
| Legal Range | 13E |
| Legal Township | 36N |
| Legal Section | 23 |
| Legal Subdivision | MCINTOSH & COS SOUTHTOWN MANOR UNIT2 |
| Legal Block | 7 |
| Legal Lot Number | 4 |
| Legal Unit | 2 |
| Jurisdiction | COOK IL |
| Township / Civil Division | BREMEN |
| Census Block Group | 4 |
| Census Block | 4017 |
| Census Tract | 825600 |
Source: Cook County records · APN 28-23-120-004
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 | 3620 BLACKSTONE AVE, MARKHAM, IL 60428-4421 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | Verified Name on Deed |
|---|---|
| Last Sale | May 28, 1998 · Amount on Record |
| Deed Sale | May 28, 1998 · Amount on Record |
| Deed Document Number | 1998154 |
| 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 | Bremen Township |
| Municipality | Markham City |
| Secondary School District | Bremen Community High School District 228 (09 - 12) |
| Elementary School District | Prairie-Hills Elementary School District 144 (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 | $10,000 (+81.59%) Land $3,977 Building $6,023 | $100,000 (+81.59%) Land $39,770 Building $60,230 | |
| 2023 | $3,862.00 (+126.64%) | ||
| 2022 | $1,704.00 Homeowner's exemption | $5,507 Land $3,535 Building $1,972 | $55,070 Land $35,350 Building $19,720 |
Source: FEMA National Flood Hazard Layer, Cook County (17031C), updated February 11, 2026 · FEMA OpenFEMA NFIP redacted claims and policies, census block group 170318256004, 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 |
| Nearest Special Flood Hazard Area | Zone AE, within 500 ft |
| Nearby Flood Claims | 2 (2021–2022) |
| Claims Outside the SFHA | 2 of 2 |
| Most Recent Claim | Jan 2022, river or lake flooding |
| 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 227 locations within about half a mile of this property
| Provider | Technology | Download / Upload (Mbps) |
|---|---|---|
| AT&T | Fiber | 5,000 / 5,000 |
| Xfinity | Cable | 2,000 / 250 |
| Verizon | Fixed Wireless | 300 / 20 |
| 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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