Green Lake County property record for 521 W John St, Markesan, WI 53946
| Property Type | Single Family Home |
|---|---|
| Lot Size | 0.674 acres (29,359 sqft) |
| Owner | Individual Name on File |
| Tax Bill | $1,931 (2025) |
| Deeds & Mortgages | Jun 2022 Mortgage Dec 2021 Sale |
| Flood Zone | Zone X (minimal risk) |
| APN | 251-00416-0000 |
| Primary APN | 251-00416-0000 |
|---|
| Lot Area | 29,359 sqft (0.674 acres) |
|---|
| Street Address | 521 W JOHN ST |
|---|---|
| City | MARKESAN |
| State | WI |
| Zip | 53946-7115 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT 1 CERTIFIED SURVEY MAP 1645 V7 SEC 6 |
| Legal Range | 13E |
| Legal Township | 14N |
| Legal Section | 06 |
| Legal Subdivision | CSM NO 1645 |
| Legal Lot Number | 1 |
| Jurisdiction | GREEN LAKE WI |
| Township / Civil Division | MARKESAN |
| Census Block Group | 3 |
| Census Block | 3000 |
| Census Tract | 100600 |
521 W John St is owned and occupied by an individual who acquired it in August 2013.
Source: Green Lake County records, as of February 18, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 521 W JOHN ST, MARKESAN, WI 53946-7115 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
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 3, 2022 | Deed of Trust, Mortgage · Conventional Mortgage ERGO BANK |
| Dec 13, 2021 | Warranty Deed, Transfer |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Aug 26, 2013 |
| Deed Sale | Aug 26, 2013 |
| Prior Sale | Aug 26, 2013 |
| Deed Document Number | 2013381149 |
| Deed Book / Page | N/A |
| Prior Transfer Date | Jun 28, 2013 |
| Prior Transfer Doc | 00000NA/NA |
| Record Updated | Jun 8, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | GREEN LAKE WI |
| Property Address | 521 W JOHN ST, MARKESAN, WI 53946-7115 |
| Transaction Type | Mortgage |
| Record Updated | Jun 22, 2022 |
| Name | Verified Name |
|---|
| Document Number | 0000416343 |
|---|---|
| Date | Jun 3, 2022 |
| Instrument | 416343 |
| Name | ERGO BANK |
|---|---|
| Type | Bank |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Rate Type | Fixed Rate |
|---|
| Document Type | Warranty Deed |
|---|---|
| Jurisdiction | GREEN LAKE WI |
| Recording Date | Dec 13, 2021 |
| Property Address | 521 W JOHN ST, MARKESAN, WI 53946-7115 |
| Document Number | 0000414483 |
| Map Reference | MB 7 PG 1645 |
| Instrument Date | Dec 3, 2021 |
| Instrument | 414483 |
| Transaction Type | Transfer |
| Record Updated | Dec 29, 2021 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|
The 2025 property tax bill for 521 W John St was $1,931 with a homeowner's exemption.
Source: Green Lake County assessment roll, as of February 18, 2026
| Type | Name |
|---|---|
| State | Wisconsin |
| County | Green Lake County |
| Municipality | Markesan City |
| Unified School District | Markesan School District (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $1,931.00 Homeowner's exemption | $130,200 Land $31,900 Building $98,300 | $129,731 Land $31,785 Building $97,946 |
| 2023 | $1,785.00 Homeowner's exemption | $78,400 Land $21,000 Building $57,400 | $90,850 Land $24,335 Building $66,515 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 521 W John St in Zone X, an area of minimal flood risk, within 500 ft of a high-risk flood zone.
Source: FEMA National Flood Hazard Layer, effective June 4, 2014 · 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 |
| Nearby Flood Policies | 2 in force |
| Nearby Flood Claims | 3 (2008–2019) |
| Claims Outside the SFHA | 1 of 3 |
| Most Recent Claim | Mar 2019 · river or lake flooding |
| 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.
Wildfire risk around 521 W John St is low, with a 0.02% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 94% of the US · lower than 83% of Wisconsin |
|---|---|
| Wildfire Likelihood | 0.02% 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 | MARKESAN WATERWORKS serves 1,365 people · EPA ID WI4240218 |
|---|---|
| Water Source | Groundwater |
| Last State Inspection | Nov 2023 |
| Lead | 7 ppb (2023) 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. The service area is an EPA estimate; the actual supplier may differ.
Source: FCC Broadband Data Collection, based on 29 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Brightspeed Fiber | 2,000 / 2,000 |
| Spectrum Cable | 1,000 / 1,000 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: Bertram Communications.
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