308 Prospect Ave, Oshkosh, WI 54901 Property Records

Winnebago County property record for 308 Prospect Ave, Oshkosh, WI 54901

Property Summary

Property Type	Duplex
Details	6 bd · 2 ba · 2,180 sqft · built 1920
Lot Size	0.245 acres (10,680 sqft)
Owner	Individual Name on Record
Last Sale	$214,900 (Aug 2026)
Tax Bill	$3,259 (2024)
Deeds & Mortgages	Aug 2026 Sale & Mortgage
Flood Zone	Zone X (minimal risk)
APN	`10-08380000`

Property Details

APN / Parcel Number

Primary APN	`10-08380000`
Alternative APN	`910-08380000`

Interior

Bedrooms	6 Beds
Full Baths	2 Baths
Total Rooms	10 Rooms
Units	2 Units
Stories	2 Stories
Building Area	2,180 sqft Living Area

Exterior

Year Built	Built 1920
Effective Year Built	Effective 1920
Architectural Style	Duplex Single
Exterior Material	Aluminum/Vinyl
Lot Area	10,680 sqft (0.245 acres)
Lot Dimensions	178 ft deep x 60 ft wide

Utilities, Heating & Cooling

Heating System	HVAC
Heating Fuel	Gas

Location & Zoning

Account Number	910-08380000
Street Address	308 PROSPECT AVE
City	OSHKOSH
State	WI
Zip	54901-3729
Property Category	Residential
Property Type	Residential > Multi-Unit > Duplex
Local Zoning Code	R2
Legal Description	S 61 FT OF LOT 12 & ALL OF LOT 4 BLK 104 LEACHS MAP
Legal Subdivision	TENTH WARD
Legal Block	104
Legal Lot Number	12,4
Jurisdiction	WINNEBAGO WI
Township / Civil Division	OSHKOSH
Census Block Group	3
Census Block	3003
Census Tract	502

Owner

Source: Winnebago County records, as of August 18, 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	308 PROSPECT AVE, OSHKOSH, WI 54901-3729
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Single

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Aug 4, 2026 · Amount on Record
Deed Sale	Aug 4, 2026 · Amount on Record
Prior Sale	May 2, 2017 · Amount on Record
Deed Document Number	20261972523
Record Updated	Sep 20, 2026

August 2026: Warranty Deed, Transfer

Document Type	Warranty Deed
Jurisdiction	WINNEBAGO WI
Recording Date	Aug 4, 2026
Property Address	308 PROSPECT AVE, OSHKOSH, WI 54901-3729
Document Number	0001972523
Instrument Date	Jul 30, 2026
Instrument	20261972523
Transaction Type	Transfer
Record Updated	Aug 18, 2026
Title Company	NONE LISTED ON DOCUMENT

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$65,114.70
Amount Accuracy	Full Amount Stated
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	308 PROSPECT AVE, OSHKOSH, WI 54901-3729

Mortgage

Document Number	0001972524,
Date	Aug 4, 2026
Instrument	20261972524

Lender

Name	GUILD MORTGAGE COMPANY

Agreement

Type	FHA Mortgage
Amount	Amount Recorded
Term	360 Months
Due	Aug 1, 2056

Interest

Rate	6.47%
Max Rate	-1%

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		$172,400 (-) Land $27,200 Building $145,200
2024	$3,259.00 (+24.72%)	$172,400 (+95.46%) Land $27,200 Building $145,200
2023	$2,613.00 (+1.08%)	$88,200 (-) Land $17,000 Building $71,200	$127,451 Land $24,565 Building $102,886
2022	$2,585.00	$88,200 Land $17,000 Building $71,200

Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.

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	Low lower than 99.1% of the US · lower than 97.9% of Wisconsin
Wildfire Likelihood	Under 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.

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 777 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
TDS Telecom Fiber	8,000 / 8,000
Spectrum Cable	1,000 / 1,000
Verizon Fixed Wireless	300 / 20
Bertram Communications Fixed Wireless	100 / 20
T-Mobile Fixed Wireless	100 / 20
AT&T DSL · Fiber in parts of the area	100 / 20