Winnebago County property record for 1637 4th Ave, Rockford, IL 61104
| Property Type | Duplex |
|---|---|
| Details | 4 bd · 2 ba · 1,724 sqft · built 1900 |
| Lot Size | 0.24 acres (10,454 sqft) |
| Owner | Individual Name on Record |
| Tax Bill | $1,615 (2025) |
| Deeds & Mortgages | Oct 2026 Sale |
| Flood Zone | Zone X (minimal risk) |
| APN | 205B818 |
| Primary APN | 205B818 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 8 Rooms |
| Units | 2 Units |
| Stories | 2 Stories |
| Building Area | 1,724 sqft Living Area |
| Gross Area | 2,586 sqft |
| 1st Floor Area | 862 sqft |
| Basement Area | 862 sqft |
| Game Room | Game Room |
| Flooring | Carpet |
| Interior Walls | Plaster |
| Year Built | Built 1900 |
|---|---|
| Effective Year Built | Effective 1900 |
| Architectural Style | Old Style |
| Construction Type | Frame |
| Roof Material | Asphalt |
| Lot Area | 10,454 sqft (0.24 acres) |
| Terrain | Rolling |
| View / Lot | Alley |
| Garage Type | Detached |
| Garage Area | 396 sqft |
| Parking Spaces | 1 Parking Space |
| Porch | Slab |
| Cooling System | Central |
|---|---|
| Heating System | HVAC |
| Sewer | Connected |
| Account Number | 205B818 |
|---|---|
| Street Address | 1637 4TH AVE |
| City | ROCKFORD |
| State | IL |
| Zip | 61104-3201 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Duplex |
| Local Zoning Code | R2 |
| Legal Description | W T ROBERTSONS ADDN LOT 005 BLOCK 002 |
| Legal Subdivision | W T ROBERTSONS ADDN |
| Legal Block | 002 |
| Legal Lot Number | 005 |
| Jurisdiction | WINNEBAGO IL |
| Township / Civil Division | ROCKFORD |
| Census Block Group | 2 |
| Census Block | 2012 |
| Census Tract | 1300 |
Source: Winnebago County records, as of October 21, 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 Record |
|---|---|
| Mailing Address | 1645 4TH AVE, ROCKFORD, IL 61104-3201 |
| Owner Type | Individual |
| Deed Names | Name on Deed |
|---|---|
| Last Transfer Date | Oct 5, 2026 |
| Transfer Doc | 0000026875 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed |
|---|---|
| Jurisdiction | WINNEBAGO IL |
| Recording Date | Oct 6, 2026 |
| Property Address | 1637 4TH AVE, ROCKFORD, IL 61104-3201 |
| Document Number | 0000026875 |
| Instrument Date | Oct 5, 2026 |
| Instrument | 202626875 |
| Transaction Type | Transfer |
| Record Updated | Oct 20, 2026 |
| Title Company | NONE LISTED ON DOCUMENT |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Full Amount Stated |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 1645 4TH AVE, ROCKFORD, IL 61104-3201 |
Source: Winnebago County assessment roll, as of July 28, 2026
| Type | Name |
|---|---|
| State | Illinois |
| County | Winnebago County |
| County Subdivision | Rockford Township |
| Municipality | Rockford City |
| Unified School District | Rockford School District 205 (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $1,615.00 | $18,296 (+41.39%) Land $2,565 Building $15,731 | $54,888 (+41.39%) Land $7,695 Building $47,193 |
| 2022 | $12,940 Land $1,814 Building $11,126 | $38,820 Land $5,442 Building $33,378 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
Source: FEMA National Flood Hazard Layer, effective July 12, 2023 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Nearest Special Flood Hazard Area | Zone AE, within 500 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Community Rating System | Class 7 (15% premium discount) |
| Nearby Flood Policies | 3 in force |
| Nearby Flood Claims | 18 (2006–2024) |
| Most Recent Claim | Jul 2024 · Severe Storms, Tornadoes, Straight-line Winds, And Floodng |
| Claims by Event |
|
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: 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 | ROCKFORD serves 147,051 people · EPA ID IL2010300 |
|---|---|
| Water Source | Groundwater |
| Last State Inspection | Jan 2024 |
| Lead | 10 ppb (2026) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | 9 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 546 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| T-Mobile Fiber · Fixed Wireless | 2,000 / 2,000 |
| Xfinity Cable | 2,000 / 250 |
May also be available: AT&T, Verizon.
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