Marathon County property record for 523 E Union Ave, Wausau, WI 54403
| Property Type | Single Family Home |
|---|---|
| Details | 2 bd · 1 ba · built 1900 |
| Lot Size | 0.169 acres (7,405 sqft) |
| Owner | Individual Name on Record |
| Tax Bill | $1,713 (2025) |
| Deeds & Mortgages | Aug 2026 Line of Credit |
| Flood Zone | Zone X (minimal risk) |
| APN | 291-2907-243-0212 |
| Primary APN | 291-2907-243-0212 |
|---|---|
| Alternative APN |
|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 6 Rooms |
| Stories | 2 Stories |
| Fireplace | Fireplace |
| Year Built | Built 1900 |
|---|---|
| Architectural Style | Other |
| Exterior Material | Aluminum/Vinyl |
| Lot Area | 7,405 sqft (0.169 acres) |
| Garage Type | Detached |
| Parking Spaces | 2 Parking Spaces |
| Street Address | 523 E UNION AVE |
|---|---|
| City | WAUSAU |
| State | WI |
| Zip | 54403-3364 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R3 |
| Legal Description | KIEFER MILLER & RINGLES ADD LOT 11 BLK 6 |
| Legal Range | 07 |
| Legal Township | 29 |
| Legal Section | 24 |
| Legal Quarter | SE |
| Legal Subdivision | KIEFER MILLER & RINGLES ADD |
| Legal Block | 6 |
| Legal Lot Number | 11 |
| Jurisdiction | MARATHON WI |
| Township / Civil Division | WAUSAU |
| Census Block Group | 5 |
| Census Block | 5014 |
| Census Tract | 300 |
Source: Marathon County records, as of February 9, 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 | 523 E UNION AVE, WAUSAU, WI 54403-3364 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | Name on Deed |
|---|---|
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | MARATHON WI |
| Recording Date | Aug 17, 2026 |
| Property Address | 523 E UNION AVE, WAUSAU, WI 54403-3364 |
| Document Number | 0001942676 |
| Instrument Date | Jul 3, 2026 |
| Instrument | 20261942676 |
| Transaction Type | Mortgage |
| Record Updated | Sep 9, 2026 |
| Title Company | STEWART GUARANTY TITLE, STEWART TITLE GUARANTY COMPA |
| Name | Verified Name |
|---|---|
| Address | 523 E UNION AVE, WAUSAU, WI 54403-3364 |
| Document Number | 0001942676, |
|---|---|
| Date | Aug 17, 2026 |
| Instrument | 20261942676 |
| Name | ASSOCIATED BANK |
|---|
| Type | Line of Credit |
|---|---|
| Amount | Amount Recorded |
| Term | 360 Months |
| Due | Jul 28, 2056 |
| Max Rate | -1% |
|---|
Source: Marathon County assessment roll, as of January 1, 2024
| Type | Name |
|---|---|
| State | Wisconsin |
| County | Marathon County |
| Municipality | Wausau City |
| Unified School District | Wausau School District (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $1,713.00 (+4.83%) | $103,000 (+31.38%) Land $16,500 Building $86,500 | $108,105 (+15.01%) Land $17,318 Building $90,787 |
| 2023 | $1,634.00 Homeowner's exemption | $78,400 Land $15,900 Building $62,500 | $93,995 Land $19,063 Building $74,932 |
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 September 18, 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.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 80% of the US · above 57% of Wisconsin |
|---|---|
| Wildfire Likelihood | 0.01% annual chance |
| Exposure | None beyond 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 | WAUSAU WATERWORKS serves 39,994 people · EPA ID WI7370102 |
|---|---|
| Water Source | Groundwater |
| Last State Inspection | Dec 2023 |
| Lead | 6 ppb (2020) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | None 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 481 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| TDS Telecom Fiber | 8,000 / 8,000 |
| Frontier Fiber | 7,000 / 7,000 |
| Spectrum Cable · Fiber in parts of the area | 1,000 / 1,000 |
| AT&T Fixed Wireless | 100 / 20 |
May also be available: T-Mobile.
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