Jo Daviess County property record for 307 John St, Warren, IL 61087
| Property Type | Single Family Home |
|---|---|
| Details | 1,670 sqft · built 1930 |
| Lot Size | 0.33 acres (14,375 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $54,000 (Apr 2022) |
| Tax Bill | $1,907 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 21-001-712-00 |
| Primary APN | 21-001-712-00 |
|---|
| Building Area | 1,670 sqft Living Area |
|---|
| Year Built | Built 1930 |
|---|---|
| Effective Year Built | Effective 1930 |
| Lot Area | 14,375 sqft (0.33 acres) |
| Street Address | 307 JOHN ST |
|---|---|
| City | WARREN |
| State | IL |
| Zip | 61087-9733 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | SHERK'S ADD BLOCK 3 LOTS 3 & 4 |
| Legal Subdivision | SHERKS ADD |
| Legal Block | 3 |
| Legal Lot Number | 3-4 |
| Jurisdiction | JO DAVIESS IL |
| Township / Civil Division | WARREN |
| Census Block Group | 1 |
| Census Block | 1053 |
| Census Tract | 20102 |
Source: Jo Daviess County records · APN 21-001-712-00
Assessment roll updated October 17, 2025 · 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 | 2 Individual Names on File |
|---|---|
| Mailing Address | 307 JOHN ST, WARREN, IL 61087-9733 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Sale | Apr 20, 2022 · Amount on Record |
| Deed Sale | Apr 20, 2022 · Amount on Record |
| Prior Sale | Feb 13, 2008 · Amount on Record |
| Record Updated | Sep 20, 2026 |
Source: Jo Daviess County records · Assessment roll updated October 17, 2025 · Last verified June 2026
| Type | Name |
|---|---|
| State | Illinois |
| County | Jo Daviess County |
| County Subdivision | Warren Township |
| Municipality | Warren Village |
| Unified School District | Warren Community Unit School District 205 (PK - 12) |
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 | $1,907.00 (+14.6%) | $23,820 (+25%) Land $2,885 Building $20,935 | $71,460 (+24.99%) Land $8,655 Building $62,805 |
| 2024 | $1,664.00 (-35.45%) | $19,056 (-30.54%) Land $2,308 Building $16,748 | $57,174 (-30.54%) Land $6,925 Building $50,249 |
| 2022 | $2,578.00 | $27,433 Land $1,674 Building $25,759 | $82,308 Land $5,023 Building $77,285 |
Source: FEMA National Flood Hazard Layer as of June 24, 2021 · USDA Forest Service Wildfire Risk to Communities as of 2024 · Last verified October 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Wildfire Risk | Low lower than 97% of the US · lower than 79% of Illinois |
|---|---|
| Wildfire Likelihood | Under 0.01% annual chance |
| Exposure | None beyond ember reach |
Values are read at the parcel center point; lenders make the official flood determination.
Source: FCC Broadband Data Collection as of December 31, 2025 · Last verified October 2026
| Provider | Max Down / Up (Mbps) |
|---|---|
| Mediacom Communications Cable · Fiber in parts of the area | 1,000 / 50 |
| Computer Dynamics of NW Illinois Fixed Wireless | 200 / 200 |
May also be available: Jo-Carroll Electric Cooperative.
Based on FCC filings for 267 locations within half a mile of this property.
Source: EPA Safe Drinking Water Information System as of 2026 Q3 · EPA water system boundaries as of March 2026 · Last verified October 2026
| Water System | WARREN serves 1,323 people |
|---|---|
| Water Source | Groundwater |
| Last State Inspection | Apr 2025 |
| Lead | Under 1 ppb (2025) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | 4 last 3 years |
Results are for the whole water system as reported to EPA, 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. The full violation and enforcement history is in the system's EPA record.
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