Cook County property record for 4100 N Mason Ave, Chicago, IL 60634
| Property Type | Single Family Home |
|---|---|
| Details | 2 bd · 1 ba · 1,032 sqft · built 1923 |
| Lot Size | 0.086 acres (3,750 sqft) |
| Owner | 2 Individual Names on File |
| Tax Bill | $6,263 (2023) |
| Deeds & Mortgages | Jun 2021 Mortgage Mar 2017 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 13-17-413-040 |
| Primary APN | 13-17-413-040 |
|---|---|
| Alternative APN |
|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 6 Rooms |
| Stories | 1 Story |
| Building Area | 1,032 sqft Living Area |
| 1st Floor Area | 1,032 sqft |
| Year Built | Built 1923 |
|---|---|
| Effective Year Built | Effective 1925 |
| Architectural Style | Bungalow |
| Exterior Material | Brick/Stone |
| Construction Type | Masonry / Concrete Block |
| Roof Material | Asphalt |
| Lot Area | 3,750 sqft (0.086 acres) |
| Garage Type | Detached |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Hot Water |
| Water Source | Commercial |
| Street Address | 4100 N MASON AVE |
|---|---|
| City | CHICAGO |
| State | IL |
| Zip | 60634-1613 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | RS-3 |
| Legal Description | (MCINTOSH)(BROTHERS)(IRVING) PK BLVD ADD TO CHICAGO S UB WH SE SEC 17-40-13 |
| Legal Range | 13E |
| Legal Township | 40N |
| Legal Section | 17 |
| Legal Subdivision | MCINTOSH BROTHERS IRVING |
| Legal Block | 12 |
| Legal Lot Number | 20 |
| Jurisdiction | COOK IL |
| Township / Civil Division | CHICAGO |
| Census Block Group | 2 |
| Census Block | 2006 |
| Census Tract | 150402 |
4100 N Mason Ave is owned and occupied by two individuals who acquired it in July 2024.
Source: Cook County records, as of May 27, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 4100 N MASON AVE, CHICAGO, IL 60634-1613 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Joint Tenants |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Date | Document |
|---|---|
| Jun 28, 2021 | Deed of Trust, Mortgage · Conventional Mortgage QUICKEN LOANS LLC |
| Mar 6, 2017 | Deed of Trust, Mortgage QUICKEN LNS |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Jul 1, 2024 |
| Deed Sale | Jul 1, 2024 |
| Prior Sale | Jun 12, 2006 · Amount on File |
| Deed Document Number | 20249013 |
| Prior Transfer Date | Mar 26, 2024 |
| Prior Transfer Doc | 0000009013 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | COOK IL |
| Property Address | 4100 N MASON AVE, CHICAGO, IL 60634-1613 |
| Transaction Type | Mortgage |
| Record Updated | Jul 7, 2021 |
| Title Company | AMROCK INC |
| Name | Verified Name |
|---|
| Document Number | 0017935106 |
|---|---|
| Date | Jun 28, 2021 |
| Instrument | 2117935106 |
| Name | QUICKEN LOANS LLC |
|---|---|
| Type | Mortgage Company |
| Address | DETROIT, MI 48226 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 360 Months |
| Due | Jun 1, 2051 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | COOK IL |
| Property Address | 4100 N MASON AVE, CHICAGO, IL 60634-1613 |
| Document Number | 1707218048 |
| Instrument Date | Mar 6, 2017 |
| Transaction Type | Mortgage |
| Record Updated | Mar 28, 2017 |
| Title Company | OTHER |
| Name | Verified Name |
|---|---|
| Relationship | Husband and Wife |
| Address | 4100 N MASON AVE CHICAGO IL 606341613, CHICAGO, IL 60634-1613 |
| Document Number | 1707218048 |
|---|---|
| Date | Mar 13, 2017 |
| Instrument | 7218048 |
| Name | QUICKEN LNS |
|---|---|
| Type | Funding / Finance Company |
| Address | DETROIT, MI 48226-1906 |
| Amount | Amount on Record |
|---|---|
| Term | 360 Months |
| Due | Mar 12, 2047 |
| Rate Type | Adjustable Rate |
|---|---|
| Rate | 2.87% |
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 | $36,000 Land $13,125 Building $22,875 | $360,000 Land $131,250 Building $228,750 | |
| 2023 | $6,263.00 (+2.94%) | ||
| 2022 | $6,084.00 Homeowner's exemption | $33,000 Land $10,500 Building $22,500 | $330,000 Land $105,000 Building $225,000 |
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 4100 N Mason Ave in Zone X, an area of minimal flood risk.
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 |
| Nearby Flood Policies | 1 in force |
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 4100 N Mason 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 1,238 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 / 2,000 |
| Verizon Fixed Wireless | 1,000 / 75 |
| T-Mobile Fixed Wireless | 100 / 20 |
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