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  5. Koster St

305 Koster St, Madison, WI 53713 Property Records

Dane County property record for 305 Koster St, Madison, WI 53713

Property Summary

Property TypeSingle Family Home
Details4 bd · 2 ba · 1,329 sqft · built 1993
Lot Size0.273 acres (11,914 sqft)
OwnerIndividual Name on Record
Tax Bill$5,053 (2024)
Deeds & MortgagesMar 2021 Sale
Sep 2018 Line of Credit
Flood ZoneZone X (minimal risk)
APN0709-351-1111-5

Property Details

APN / Parcel Number

Primary APN0709-351-1111-5

Interior

Bedrooms4 Beds
Full Baths2 Baths
Total Rooms9 Rooms
Stories1 Story
Building Area1,329 sqft Living Area
1st Floor Area1,329 sqft
FlooringCarpet
Interior WallsWallboard/Drywall

Exterior

Year BuiltBuilt 1993
Effective Year BuiltEffective 2001
Architectural StyleRanch
Exterior MaterialAluminum/Vinyl
Foundation TypeConcrete
Roof MaterialAsphalt
Lot Area11,914 sqft (0.273 acres)
Garage TypeDetached
Garage Area528 sqft
DrivewayDriveway
Driveway Area140 sqft
Parking Spaces2 Parking Spaces
PorchFinished/Screened Porch
Porch Area108 sqft

Utilities, Heating & Cooling

Cooling SystemCentral
SewerMunicipal
Water SourceCommercial

Location & Zoning

Street Address305 KOSTER ST
CityMADISON
StateWI
Zip53713-1405
Property CategoryResidential
Property TypeResidential > Single Family > Home
Local Zoning CodeTR-C1
Legal DescriptionCERTIFIED SURVEY MAP NO 7112 RECORDED IN DANE COUNTY REGISTER OF DEEDS IN VOL 36 PAGE 61-63 OF CERTIFIED SURVEYS, PRT OF LOTS
Legal Range09
Legal Township07
Legal Section35
Legal SubdivisionCERTIFIED SURVEY MAP NO 7112 RECORDED IN
Legal Lot Number1 2
JurisdictionDANE WI
Township / Civil DivisionMADISON
Census Block Group4
Census Block4025
Census Tract1401

Owner

Source: Dane County records, as of January 22, 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
Co-ownerCo-owner on Record
Mailing Address3346 YONGE AVE, SARASOTA, FL 34235-2293
Owner TypeIndividual, Secondary Company

Deeds, Mortgages & Sale History

DateDocument
Mar 29, 2021Warranty Deed, Transfer
Sep 6, 2018Deed of Trust, Mortgage · Line of Credit
UW CU

Assessor's Deed Record

Deed Names2 Names on Deed
Last Transfer DateMar 29, 2021
Transfer Doc0005710274
Record UpdatedJun 8, 2026

March 2021: Warranty Deed, Transfer

Document TypeWarranty Deed
JurisdictionDANE WI
Recording DateMar 29, 2021
Property Address305 KOSTER ST, MADISON, WI 53713-1405
Document Number0005710274
Map ReferenceMB 36 PG 61-63
Instrument DateMar 25, 2021
Instrument5710274
Transaction TypeTransfer
Record UpdatedSep 8, 2022

Transaction

AmountAmount Recorded
Tax$600.00
Amount AccuracyFull Amount Stated

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
Address3346 YONGE AVE, SARASOTA, FL 34235-2293

September 2018: Deed of Trust, Mortgage

Document TypeDeed of Trust
JurisdictionDANE WI
Property Address305 KOSTER ST, MADISON, WI 53713-1405
Document Number0005442529
Instrument DateSep 6, 2018
Transaction TypeMortgage
Record UpdatedOct 10, 2018
Title CompanyOTHER

Transferred To (Grantee/Buyer)

NameVerified Name
Address305 KOSTER ST MADISON WI 537131405, MADISON, WI 53713-1405

Mortgage

Document Number0005442529
DateSep 20, 2018
Instrument5442529
Lender
NameUW CU
TypeCredit Union
AddressMADISON, WI 53744
Agreement
TypeLine of Credit
AmountAmount Recorded
Term360 Months
DueSep 19, 2048
Interest
Rate TypeAdjustable Rate

Tax Assessment & Valuation

Source: Dane County assessment roll, as of January 1, 2025

Property Jurisdictions

TypeName
StateWisconsin
CountyDane County
MunicipalityMadison City
Unified School DistrictMadison Metropolitan School District (PK - 12)

Tax Bill & Assessment History

YearTax BillAssessed ValueAssessed Market Value
2025$290,200 (+9.02%) Land $72,200 Building $218,000
2024$5,053.00 (+18.53%)$290,200
2023$266,200 Land $66,200 Building $200,000
2022$4,263.00

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 September 20, 2026 · 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 Policies2 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 RiskLow
lower than 95% of the US · lower than 88% of Wisconsin
Wildfire LikelihoodUnder 0.01% annual chance
ExposureDirect
burnable vegetation

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 SystemMADISON WATER UTILITY
serves 272,000 people · EPA ID WI1130224
Water SourceGroundwater
Last State InspectionApr 2023
Lead2 ppb (2023)
action level 15 ppb

Violations Reported to EPA

Water QualityNone
last 10 years
Treatment and ProcedureLead service line inventory
Oct 2024
Monitoring and Reporting1
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 270 locations within half a mile, as of December 31, 2025

ProviderMax Down / Up (Mbps)
AT&T
Fiber · Fixed Wireless in parts of the area		5,000 / 5,000
Spectrum
Cable · Fiber in parts of the area		1,000 / 1,000
Verizon
Fixed Wireless		300 / 20
LiteWire
Fixed Wireless		100 / 25
T-Mobile
Fixed Wireless		100 / 20

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