Cook County property record for 4136 N Keystone Ave, Chicago, IL 60641
| Property Type | Condominium |
|---|---|
| Details | 1 bd · 1 ba · 600 sqft · built 1909 |
| Lot Size | 0.201 acres (8,741 sqft) |
| Owner | Company Name on File |
| Last Sale | $40,000 (Oct 2010) |
| Tax Bill | $1,747 (2023) |
| Deeds & Mortgages | Jan 2018 Line of Credit |
| Flood Zone | Zone X (minimal risk) |
| APN | 13-15-417-031-1004 |
| Primary APN | 13-15-417-031-1004 |
|---|
| Bedrooms | 1 Bed |
|---|---|
| Full Baths | 1 Bath |
| Units | 63 Units |
| Building Area | 600 sqft Living Area |
| Year Built | Built 1909 |
|---|---|
| Effective Year Built | Effective 1909 |
| Architectural Style | Condo/Apartment |
| Lot Area | 8,741 sqft (0.201 acres) |
| Street Address | 4136 N KEYSTONE AVE, 1NE |
|---|---|
| City | CHICAGO |
| State | IL |
| Zip | 60641-5504 |
| Property Category | Residential |
| Property Type | Residential > Condominium / Townhouse > Condominium |
| Local Zoning Code | RT-4 |
| Legal Subdivision | 4134-36 N KEYSTONE CONDO |
| Legal Lot Number | 10 |
| Jurisdiction | COOK IL |
| Township / Civil Division | CHICAGO |
| Census Block Group | 1 |
| Census Block | 1010 |
| Census Tract | 160300 |
4136 N Keystone Ave is owned by a company that bought it in October 2010.
Source: Cook County records, as of October 12, 2026
| Owner of Record | Company Name on File |
|---|---|
| Mailing Address | 4136 N KEYSTONE AVE, CHICAGO, IL 60641-5504 |
| 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 | Oct 6, 2010 · Amount on File |
| Deed Sale | Oct 6, 2010 · Amount on File |
| Prior Sale | Jan 20, 2010 |
| Deed Document Number | 201031030 |
| Record Updated | Oct 29, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | COOK IL |
| Recording Date | Jan 31, 2018 |
| Property Address | 4136 N KEYSTONE AVE, CHICAGO, IL 60641-5504 |
| Document Number | 1803149001 |
| Instrument Date | Jan 18, 2018 |
| Instrument | 3149001 |
| Transaction Type | Mortgage |
| Record Updated | Feb 8, 2018 |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|---|
| Relationship | Company |
| Address | 5339 W BELMONT AVE CHICAGO IL 606414104, CHICAGO, IL 60641-4104 |
| Document Number | 1803149001 |
|---|---|
| Date | Jan 31, 2018 |
| Instrument | 3149001 |
| Name | CORNERSTONE NAT'L BK |
|---|---|
| Type | Bank |
| Address | 1804 N NAPER BLVD # 450, NAPERVILLE, IL 60563-8300 |
| Type | Line of Credit |
|---|---|
| Amount | Amount on Record |
| Rate Type | Adjustable Rate |
|---|
Source: Cook County assessment roll, as of May 27, 2026
| Type | Name |
|---|---|
| State | Illinois |
| County | Cook County |
| Municipality | Chicago City |
| Unified School District | Chicago Public School District 299 (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $8,664 Land $2,290 Building $6,374 | $86,640 Land $22,900 Building $63,740 | |
| 2023 | $1,747.00 (+2.64%) | ||
| 2022 | $1,702.00 | $8,249 Land $1,855 Building $6,394 | $82,490 Land $18,550 Building $63,940 |
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 4136 N Keystone Ave in Zone X, an area of minimal flood risk.
Source: FEMA National Flood Hazard Layer, effective February 11, 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
Values are read at the parcel center point; lenders make the official flood determination.
The area around 4136 N Keystone Ave 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 | CHICAGO serves 2,721,308 people · EPA ID IL0316000 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Mar 2026 |
| Lead | 6 ppb (2026) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | 8 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.
Source: FCC Broadband Data Collection, based on 597 locations within half a mile, as of December 31, 2025
| 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 |
| Astound Broadband Fiber · Cable in parts of the area | 1,500 / 1,500 |
| Verizon Fixed Wireless | 1,000 / 75 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: Zentro.
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