331 Mason St, Oshkosh, WI 54902 Property Records

Winnebago County property record for 331 Mason St, Oshkosh, WI 54902

Property Summary

Property Type	Single Family Home
Details	3 bd · 2 ba · 1,064 sqft · built 1959
Lot Size	0.215 acres (9,358 sqft)
Owner	Individual Name on Record
Last Sale	$165,000 (Apr 2018)
Tax Bill	$3,778 (2024)
Deeds & Mortgages	Nov 2025 Second Mortgage Mar 2022 Mortgage
Flood Zone	Zone X (minimal risk)
APN	`06-10260000`

Property Details

APN / Parcel Number

Primary APN	`06-10260000`
Alternative APN	`906-10260000`

Interior

Bedrooms	3 Beds
Full Baths	2 Baths
Total Rooms	5 Rooms
Stories	1 Story
Building Area	1,064 sqft Living Area
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1959
Effective Year Built	Effective 1959
Architectural Style	Ranch
Exterior Material	Other
Lot Area	9,358 sqft (0.215 acres)
Garage Type	Detached
Garage Area	308 sqft

Utilities, Heating & Cooling

Heating System	HVAC
Heating Fuel	Gas

Location & Zoning

Account Number	906-10260000
Street Address	331 MASON ST
City	OSHKOSH
State	WI
Zip	54902-5640
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R1
Legal Description	THAT PT OF VAC MASON ST LYG E OF & ADJ LOT 8 ALSO ALL OF LOT8 BLK 2 VANDERPOOLS 2ND ADDN
Legal Subdivision	VANDERPOOLS SECOND ADDN SUBDV
Legal Block	2
Legal Lot Number	8
Jurisdiction	WINNEBAGO WI
Township / Civil Division	OSHKOSH
Census Block Group	3
Census Block	3009
Census Tract	1100

Owner

Source: Winnebago County records, as of May 27, 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	331 MASON ST, OSHKOSH, WI 54902-5640
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Date	Document
Nov 3, 2025	Deed of Trust, Mortgage · Stand-Alone Second Mortgage COMMUNITY FIRST CU WISCONSIN
Mar 15, 2022	Intrafamily Transfer, Transfer · Conventional Mortgage BROKER SOLUTIONS INC

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Apr 23, 2018 · Amount on Record
Deed Sale	Apr 23, 2018 · Amount on Record
Prior Sale	Mar 7, 2011 · Amount on Record
Deed Document Number	20181764524
Record Updated	Sep 20, 2026

November 2025: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	WINNEBAGO WI
Property Address	331 MASON ST, OSHKOSH, WI 54902-5640
Transaction Type	Mortgage
Record Updated	Nov 21, 2025

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0001955734
Date	Nov 3, 2025
Instrument	1955734

Lender

Name	COMMUNITY FIRST CU WISCONSIN
Type	Credit Union
Address	APPLETON, WI 54912

Agreement

Type	Stand-Alone Second Mortgage
Amount	Amount Recorded
Term	72 Months
Due	Nov 3, 2031

March 2022: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	WINNEBAGO WI
Recording Date	Mar 15, 2022
Property Address	331 MASON ST, OSHKOSH, WI 54902-5640
Document Number	0001877733
Instrument Date	Nov 23, 2021
Instrument	1877733
Transaction Type	Transfer
Record Updated	Aug 4, 2023
Title Company	VANTAGE PT TITLE INC, VANTAGE POINT TITLE INC

Transaction

Tax	$0.00
Amount Accuracy	Transfer Tax Exempt
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0001877734
Date	Mar 15, 2022
Instrument	1877734

Lender

Name	BROKER SOLUTIONS INC
Type	Mortgage Company

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	357 Months
Due	Dec 1, 2051

Tax Assessment & Valuation

Source: Winnebago County assessment roll, as of May 27, 2026

Property Jurisdictions

Type	Name
State	Wisconsin
County	Winnebago County
Municipality	Oshkosh City
Unified School District	Oshkosh Area School District (PK - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value	Assessed Market Value
2025		$213,900 (+66.85%) Land $30,500 Building $183,400
2024	$3,778.00 (+9.03%)
2023	$3,465.00 Homeowner's exemption	$128,200 (-) Land $21,100 Building $107,100	$185,252 Land $30,490 Building $154,762
2022	$3,465.00 Homeowner's exemption	$128,200 Land $21,100 Building $107,100

Assessed value and assessed market value are set for property tax purposes and are not market price estimates.

Flood

Source: FEMA National Flood Hazard Layer, effective March 26, 2019 · 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
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

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.

Drinking Water

Source: EPA Safe Drinking Water Information System, as of September 2026

Water System	OSHKOSH WATERWORKS serves 63,000 people · EPA ID WI4710457
Water Source	Surface water
Last State Inspection	Apr 2025
Lead	6 ppb (2025) action level 15 ppb

Violations Reported to EPA

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. This system sells water to local utilities; the supplier billing this address may be one of them.

Internet Providers

Source: FCC Broadband Data Collection, based on 415 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
AT&T Fiber · Fixed Wireless in parts of the area	5,000 / 5,000
Spectrum Cable	1,000 / 1,000
Bertram Communications Fixed Wireless	100 / 20

May also be available: T-Mobile, Verizon.

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