Parcel 13-0736-01-00

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Owners

GAFNER FAMILY TRUST

1449 KNAPP ST
OSHKOSH, WI 54902-6353

Parcel Summary

Location 1449 KNAPP ST
PAD Type Code 116: Executive / Mansion
Zoning SR-5
Acreage 1.607

Assigned Districts

State CodeDistrict Name
001200FVTC
266City of Oshkosh
704179Oshkosh School District
70Winnebago County
Ward 13

Legal Description

LOTS IN NE 1/4 SEC 27 COM AT A PT ON W LINE KNAPP ST 147 FT S OF NE COR LOT 9 W PARA TO N LINE LOT 9 236.2 FT S 2D50M E 241.3 FT S 25D 50M E 65.8 FT S 52D30M E 46.74 FT TO NLY L
E LI LOTS 31 & 9 TO BEG

Assessed Value History

Assessment Year 2026 2025 2024 2023 2022 2021 2020
Land Value$80,400$80,400$80,400$51,900$51,900$51,900$51,900
Building Value$560,600$560,600$560,600$335,700$335,700$335,700$335,700
Total Value$641,000$641,000$641,000$387,600$387,600$387,600$387,600
Average Assessment Ratio0.00000.97670.95840.69200.74990.82870.8894
Estimated Fair Market Value$0$656,300$668,800$560,100$516,900$467,700$435,800
Parcel Acres1.6071.6101.6101.6101.6101.6101.610
Tax Classification(s)ResidentialResidentialResidentialResidentialResidentialResidentialResidential

Document/Transfer/Sales History

Document
Number		Sale DateDeed TypeV/ISale ValidationReal
Estate
Value		Multi
Parcel
Sale		Ownership
16343892013-04-071 - WarrantyImproved2 - Valid improved sale$375,000Grantor: ZAPOLSKY, VALERIE A
Grantee: GAFNER FAMILY TRUST
11226312001-03-221 - WarrantyImproved2 - Valid improved sale$244,900Grantor: NIEHANS, JOHN/DENISE
Grantee: ZAPOLSKY, VALERIE A
09798781997-08-18Improved2 - Valid improved sale$210,000Grantee: NIEHANS, JOHN/DENISE

Building Information

Building # 1, Section # 1, Executive Mansion

StyleYear BuiltQuality/GradeHeated Sq Ft% CompleteCondition
Executive Mansion1904A4779100.00%Good

Building Data

DescriptionUnits/Details
Living/Apart. Units1
Stories2 story w/attic
Roof TypeNo Code
Basement TypeBelow Grade
Exterior WallStone
Masonry Adjustment (SF +/-)0
HeatingGas, hot water
Air ConditioningA/C (separate ducts)
Bedrooms5
Bath-Full3
Bath-Half1
Whirlpool0
Additional Fixtures2
Hot Tub0
Plumbing Rough In0
Family Rooms2
Other Rooms4
Masonry Fireplace Stacks0
Masonry Fireplace Openings0
Masonry Additional Stories0
Metal Fireplace Stacks4
Metal Fireplace Openings4
Metal Additional Stories0
Gas Fireplace Openings0

Sub Areas

TypeGross AreaPercent of BaseAdjusted Area
1F/01,885100%1,885
2NDFLR1,929100%1,929
B1,885100%1,885
CPT238100%238
FA965100%965
OMP36100%36
OMP100100%100
OMP100100%100
SFP419100%419
1F/0=[MULTIPLIER=1;ORIG=0,0] N8 W1 N22 R4U4 E12 N2 E9 N4 E14 S22 R4D4 S7 L4D4 S13 W23 N1 W6 D4L4 W5 U4L4 N5 U4R4 $ SFP=[MULTIPLIER=1;ORIG=0,0] N8 W1 N1 W10 S29 E26 N11 W6 D4L4 W5 U4L4 N5 U4R4 $ B=[MULTIPLIER=1;ORIG=0,0] N8 W1 N22 R4U4 E12 N2 E9 N4 E14 S22 R4D4 S7 L4D4 S13 W23 N1 W6 D4L4 W5 U4L4 N5 U4R4 $ 2NDFLR=[MULTIPLIER=1;ORIG=0,0] N8 W1 N26 E16 N6 E23 S22 R4D4 S7 D4L4 S13 W23 N1 W6 D4L4 W5 U4L4 N5 U4R4 $ CPT=[MULTIPLIER=1;ORIG=-11,-7] W17 N14 E17 S14 $ OMP=[MULTIPLIER=1;ORIG=-1,-9] W10 N10 E10 S10 $ OMP=[MULTIPLIER=1;ORIG=15,10] S10 E10 N10 W10 $ OMP=[MULTIPLIER=1;ORIG=15,-36] N4 E9 S4 W9

Building # 2, Section # 1, Garage

StyleYear BuiltQuality/GradeHeated Sq Ft% CompleteCondition
Garage2002A0100.00%Average

Building Data

DescriptionUnits/Details
Width24
Depth48

Sub Areas

TypeGross AreaPercent of BaseAdjusted Area
OBI1,152100%1,152
OBI=[MULTIPLIER=1;ORIG=55,-55] N48 E24 S48 W24

Land Lines

Land LineTax ClassificationAcresSq. Ft.WidthDepthValue
1Residential1.6169,979$80,400

Photo

parcel image

Disclaimer

All parcel data on this page is for use by the City of Oshkosh Assessor's Office for assessment purposes only. The summary data on this page may not be a complete representation of the parcel or of the improvements thereon. Building information, including unit counts and number of permitted units, should be verified with the appropriate City Department. Zoning information should be verified with Community Development. This is a true and accurate copy of the property assessment records of the City of Oshkosh Assessor's Office, Winnebago County, as of January 1, 2026.