LaSalle County property record for 504 Mason St, Ottawa, IL 61350
| Property Type | Single Family Home |
|---|---|
| Details | 1,503 sqft · built 1941 |
| Lot Size | 0.41 acres (17,860 sqft) |
| Owner | 2 Trust Names on File |
| Tax Bill | $5,826 (2025) |
| Deeds & Mortgages | Jan 2023 Transfer |
| Flood Zone | Zone X (minimal risk) |
| APN | 22-13-301-025 |
| Primary APN | 22-13-301-025 |
|---|---|
| Alternative APN |
|
| Plumbing Fixtures | 5 Plumbing Fixtures |
|---|---|
| Stories | 1 Story |
| Building Area | 1,503 sqft Total Area |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1941 |
|---|---|
| Effective Year Built | Effective 1941 |
| Lot Area | 17,860 sqft (0.41 acres) |
| Street Address | 504 MASON ST |
|---|---|
| City | OTTAWA |
| State | IL |
| Zip | 61350-4044 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | MASONS ADD TO OTTAWA, LTS 13 & 14 BLK 1 SEC 13-33-3 |
| Legal Range | 03 |
| Legal Township | 33 |
| Legal Section | 13 |
| Legal Subdivision | MASONS ADD |
| Legal Block | 1 |
| Legal Lot Number | 13-14 |
| Jurisdiction | LASALLE IL |
| Township / Civil Division | SOUTH OTTAWA |
| Census Block Group | 1 |
| Census Block | 1006 |
| Census Tract | 963500 |
504 Mason St is owner-occupied and held in a trust since January 2023.
Source: LaSalle County records, as of June 29, 2026
| Owner of Record | 2 Trust Names on File |
|---|---|
| Mailing Address | 504 MASON ST, OTTAWA, IL 61350-4044 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| 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 | Jan 20, 2023 |
| Deed Sale | Jan 20, 2023 |
| Deed Document Number | 2023672 |
| Prior Transfer Date | Sep 22, 2022 |
| Prior Transfer Doc | 0202300672 |
| Record Updated | Sep 20, 2026 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | LASALLE IL |
| Recording Date | Jan 20, 2023 |
| Property Address | 504 MASON ST, OTTAWA, IL 61350-4044 |
| Document Number | 0202300672 |
| Instrument Date | Sep 22, 2022 |
| Instrument | 2023-00672 |
| Transaction Type | Transfer |
| Record Updated | Feb 8, 2023 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 501 STATE ST, OTTAWA, IL 61350-3578 |
The 2025 property tax bill for 504 Mason St was $5,826, up 6.6% from the year before.
Source: LaSalle County assessment roll, as of June 29, 2026
| Type | Name |
|---|---|
| State | Illinois |
| County | LaSalle County |
| County Subdivision | South Ottawa Township |
| Municipality | Ottawa City |
| Elementary School District | Ottawa Elementary School District 141 (PK - 08) |
| Secondary School District | Ottawa Township High School District 140 (09 - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $5,826.00 (+6.64%) | $63,857 Land $17,040 Building $46,817 | $191,571 Land $51,120 Building $140,451 |
| 2024 | $5,463.00 | ||
| 2023 | $54,124 (+9.53%) Land $14,443 Building $39,681 | $162,372 (+9.53%) Land $43,329 Building $119,043 | |
| 2022 | $49,414 Land $13,186 Building $36,228 | $148,242 Land $39,558 Building $108,684 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 504 Mason St in Zone X, an area of minimal flood risk.
Source: FEMA National Flood Hazard Layer, effective March 29, 2024 · 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 2 (40% premium discount) |
| 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.
Wildfire risk around 504 Mason St is low, with a 0.01% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 80% of the US · above 71% of Illinois |
|---|---|
| Wildfire Likelihood | 0.01% annual chance |
| Exposure | Direct burnable vegetation |
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 | OTTAWA serves 18,097 people · EPA ID IL0990800 |
|---|---|
| Water Source | Groundwater |
| Last State Inspection | Jul 2025 |
| Lead | Under 1 ppb (2026–2028) action level 15 ppb |
| Water Quality | Radium resolved · Jul 2023 |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | 5 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 242 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Mediacom Xtream Cable · Fixed Wireless · Fiber in parts of the area | 1,000 / 50 |
| Verizon Fixed Wireless | 300 / 20 |
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