421 W 15th Ave, Oshkosh, WI 54902 Property Records

Winnebago County property record for 421 W 15th Ave, Oshkosh, WI 54902

Property Summary

Property TypeSingle Family Home
Details4 bd · 2 ba · 1,920 sqft · built 1906
Lot Size0.172 acres (7,500 sqft)
OwnerIndividual Name on Record
Last Sale$175,000 (May 2023)
Tax Bill$3,317 (2025)
Deeds & MortgagesSep 2026 Mortgage
Aug 2026 Transfer
+ 1 more
Flood ZoneZone X (minimal risk)
APN09-07560000

Property Details

APN / Parcel Number

Primary APN09-07560000
Alternative APN
  • 909-07560000

Interior

Bedrooms4 Beds
Full Baths2 Baths
Total Rooms8 Rooms
Stories2 Stories
Building Area1,920 sqft Living Area

Exterior

Year BuiltBuilt 1906
Effective Year BuiltEffective 1906
Architectural StyleTraditional
Exterior MaterialAluminum/Vinyl
Lot Area7,500 sqft (0.172 acres)
Lot Dimensions150 ft deep x 50 ft wide
Garage TypeDetached
Garage Area572 sqft

Utilities, Heating & Cooling

Heating SystemHVAC
Heating FuelGas

Location & Zoning

Account Number909-07560000
Street Address421 W 15TH AVE
CityOSHKOSH
StateWI
Zip54902-6543
Property CategoryResidential
Property TypeResidential > Single Family > Home
Local Zoning CodeR2
Legal DescriptionLOT 8 BLK 89 PLAT OF ORIGINAL 3RD WARD
Legal SubdivisionORIGINAL THIRD WARD
Legal Block89
Legal Lot Number8
JurisdictionWINNEBAGO WI
Township / Civil DivisionOSHKOSH
Census Block Group1
Census Block1007
Census Tract1400

Owner

Source: Winnebago County records, as of October 5, 2026

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of RecordIndividual Name on Record
Mailing Address421 W 15TH AVE, OSHKOSH, WI 54902-6543
OccupancyOwner Occupied
Owner TypeIndividual

Deeds, Mortgages & Sale History

DateDocument
Sep 21, 2026Deed of Trust, Mortgage · Conventional Mortgage
WEST POINTE BANK
Aug 12, 2026Quit Claim Deed, Transfer
NONE LISTED ON DOCUMENT
May 12, 2023Warranty Deed, Transfer · FHA Mortgage
PROSPERITY HOME MORTGAGE LLC

Assessor's Deed Record

Deed NamesName on Deed
Last SaleMay 12, 2023 · Amount on Record
Deed SaleMay 12, 2023 · Amount on Record
Prior SaleDec 15, 2014 · Amount on Record
Deed Document Number20231903409
Prior Transfer DateSep 22, 2014
Prior Transfer Doc0001674428
Record UpdatedOct 29, 2026

September 2026: Deed of Trust, Mortgage

Document TypeDeed of Trust
JurisdictionWINNEBAGO WI
Recording DateSep 21, 2026
Property Address421 W 15TH AVE, OSHKOSH, WI 54902-6543
Document Number0001975641
Instrument DateSep 14, 2026
Instrument20261975641
Transaction TypeMortgage
Record UpdatedOct 5, 2026
Title CompanyNONE LISTED ON DOCUMENT

Transferred To (Grantee/Buyer)

NameVerified Name
Address421 W 15TH AVE, OSHKOSH, WI 54902-6543

Mortgage

Document Number0001975641,
DateSep 21, 2026
Instrument20261975641
Lender
NameWEST POINTE BANK
Agreement
TypeConventional Mortgage
AmountAmount Recorded
Term360 Months
DueOct 1, 2056
Interest
Rate TypeFixed Rate
Initial TypeFixed Rate
Max Rate-1%

August 2026: Quit Claim Deed, Transfer

Document TypeQuit Claim Deed
JurisdictionWINNEBAGO WI
Recording DateAug 12, 2026
Property Address421 W 15TH AVE, OSHKOSH, WI 54902-6543
Document Number0001973047
Instrument DateAug 5, 2026
Instrument20261973047
Transaction TypeTransfer
Record UpdatedAug 26, 2026
Title CompanyNONE LISTED ON DOCUMENT

Transaction

Tax$0.00
Amount AccuracyFull Amount Stated
Additional
  • Quitclaim

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
Address421 W 15TH AVE, OSHKOSH, WI 54902-6543

May 2023: Warranty Deed, Transfer

Document TypeWarranty Deed
JurisdictionWINNEBAGO WI
Recording DateMay 12, 2023
Property Address421 W 15TH AVE, OSHKOSH, WI 54902-6543
Document Number0001903409
Instrument DateMay 10, 2023
Instrument1903409
Transaction TypeTransfer
Record UpdatedMay 7, 2026

Transaction

AmountAmount Recorded
DownpaymentDownpayment on Record
Loan-to-Value (LTV)LTV on Record
Tax$525.00
Amount AccuracyRounded by County
Additional
  • Arm's Length

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
Address421 W 15TH AVE, OSHKOSH, WI 54902-6543

Mortgage

Document Number0001903410
DateMay 12, 2023
Instrument1903410
Lender
NamePROSPERITY HOME MORTGAGE LLC
TypeMortgage Company
Agreement
TypeFHA Mortgage
AmountAmount Recorded
Term361 Months
DueJun 1, 2053

Tax Assessment & Valuation

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

Property Jurisdictions

TypeName
StateWisconsin
CountyWinnebago County
MunicipalityOshkosh City
Unified School DistrictOshkosh Area School District (PK - 12)

Tax Bill & Assessment History

YearTax BillAssessed ValueAssessed Market Value
2025$3,317.00 (-3.99%)$184,600 (+81.69%) Land $25,200 Building $159,400
2024$3,455.00 (+16.06%)
2023$2,977.00 (+1.12%) Homeowner's exemption$101,600 (-) Land $15,800 Building $85,800$146,814 Land $22,831 Building $123,983
2022$2,944.00$101,600 Land $15,800 Building $85,800

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 ZoneZone X
minimal risk
Flood Insurance RequirementNot required
lenders may require it
Nearby Flood Claims1 (2008)
Claims Outside the SFHA1 of 1
Most Recent ClaimJun 2008 · Severe Storms, Tornadoes, And Flooding

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 RiskNot 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 SystemOSHKOSH WATERWORKS
serves 63,000 people · EPA ID WI4710457
Water SourceSurface water
Last State InspectionApr 2025
Lead6 ppb (2025)
action level 15 ppb

Violations Reported to EPA

Water QualityNone
last 10 years
Treatment and ProcedureNone
last 10 years
Monitoring and ReportingNone
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 680 locations within half a mile, as of December 31, 2025

ProviderMax Down / Up (Mbps)
AT&T
Fiber · DSL
5,000 / 5,000
Spectrum
Cable · Fiber in parts of the area
1,000 / 1,000
Verizon
Fixed Wireless
300 / 20
Bertram Communications
Fixed Wireless
100 / 20

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