Dane County property record for 319 Koster St, Madison, WI 53713
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 1,408 sqft · built 1991 |
| Lot Size | 0.603 acres (26,297 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $7,000 (May 1991) |
| Tax Bill | $5,287 (2024) |
| Deeds & Mortgages | Aug 2021 Mortgage Sep 2018 Mortgage + 2 more |
| Flood Zone | Zone X (minimal risk) |
| APN | 0709-351-1108-2 |
| Primary APN | 0709-351-1108-2 |
|---|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 7 Rooms |
| Stories | 2 Stories |
| Building Area | 1,408 sqft Living Area |
| 1st Floor Area | 764 sqft |
| 2nd Floor Area | 644 sqft |
| Basement Area | 764 sqft |
| Flooring | Wood |
| Interior Walls | Wallboard/Drywall |
| Year Built | Built 1991 |
|---|---|
| Effective Year Built | Effective 1995 |
| Architectural Style | Modern |
| Exterior Material | Wood |
| Construction Type | Wood |
| Foundation Type | Concrete |
| Roof Material | Asphalt |
| Lot Area | 26,297 sqft (0.603 acres) |
| Terrain | Wooded |
| Garage Type | Attached |
| Garage Area | 484 sqft |
| Driveway | Driveway |
| Driveway Area | 140 sqft |
| Parking Spaces | 2 Parking Spaces |
| Porch | Finished/Screened Porch |
| Porch Area | 364 sqft |
| Cooling System | Central |
|---|---|
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 319 KOSTER ST |
|---|---|
| City | MADISON |
| State | WI |
| Zip | 53713-1405 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | TR-C1 |
| Legal Description | CERTIFIED SURVEY MAP NO 4850, RECORDED IN DANE COUNTY REGISTER OF DEEDS IN VOL 2 1 PAGE 252 OF CERTIFIED SURVEYS. LOT 3 |
| Legal Range | 09 |
| Legal Township | 07 |
| Legal Section | 35 |
| Legal Subdivision | CERTIFIED SURVEY MAP NO 4850, RECORDED |
| Legal Lot Number | 3 |
| Jurisdiction | DANE WI |
| Township / Civil Division | MADISON |
| Census Block Group | 4 |
| Census Block | 4025 |
| Census Tract | 1401 |
319 Koster St is owned and occupied by two individuals who bought it in May 1991.
Source: Dane County records, as of January 22, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Co-owner | Co-owner on File |
| Mailing Address | 319 KOSTER ST, MADISON, WI 53713-1405 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Date | Document |
|---|---|
| Aug 4, 2021 | Deed of Trust, Mortgage · Conventional Mortgage UNIVERSITY OF WISCONSIN CU |
| Sep 14, 2018 | Deed of Trust, Mortgage · Conventional Mortgage OLD NATIONAL BANK |
| Mar 15, 2017 | Deed of Trust, Mortgage · Line of Credit UW CU |
| Feb 8, 2017 | Deed of Trust, Mortgage · Conventional Mortgage UNIVERSITY/WI CU |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | May 1, 1991 · Amount on File |
| Deed Sale | May 1, 1991 · Amount on File |
| Deed Document Number | 0015874004 |
| Record Updated | Jun 8, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | DANE WI |
| Property Address | 319 KOSTER ST, MADISON, WI 53713-1405 |
| Transaction Type | Mortgage |
| Record Updated | Aug 25, 2021 |
| Name | Verified Name |
|---|
| Document Number | 0005757688 |
|---|---|
| Date | Aug 4, 2021 |
| Instrument | 5757688 |
| Name | UNIVERSITY OF WISCONSIN CU |
|---|---|
| Type | Credit Union |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 360 Months |
| Due | Aug 1, 2051 |
| Rate Type | Fixed Rate |
|---|
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | DANE WI |
| Property Address | 319 KOSTER ST, MADISON, WI 53713-1405 |
| Transaction Type | Mortgage |
| Record Updated | Feb 5, 2021 |
| Name | Verified Name |
|---|
| Document Number | 0005441013 |
|---|---|
| Date | Sep 14, 2018 |
| Instrument | 5441013 |
| Name | OLD NATIONAL BANK |
|---|---|
| Type | Bank |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 120 Months |
| Due | Sep 25, 2028 |
| Rate Type | Fixed Rate |
|---|
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | DANE WI |
| Property Address | 319 KOSTER ST, MADISON, WI 53713-1405 |
| Document Number | 0005314618 |
| Instrument Date | Mar 15, 2017 |
| Transaction Type | Mortgage |
| Record Updated | Apr 12, 2017 |
| Name | Verified Name |
|---|---|
| Relationship | Husband and Wife |
| Address | 319 KOSTER ST MADISON WI 537131405, MADISON, WI 53713-1405 |
| Document Number | 0005314618 |
|---|---|
| Date | Mar 28, 2017 |
| Instrument | 5314618 |
| Name | UW CU |
|---|---|
| Type | Credit Union |
| Address | MADISON, WI 53744 |
| Type | Line of Credit |
|---|---|
| Amount | Amount on Record |
| Term | 360 Months |
| Due | Mar 27, 2047 |
| Rate Type | Adjustable Rate |
|---|
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | DANE WI |
| Property Address | 319 KOSTER ST, MADISON, WI 53713-1405 |
| Document Number | 0005307284 |
| Instrument Date | Feb 8, 2017 |
| Transaction Type | Mortgage |
| Record Updated | Mar 22, 2017 |
| Name | Verified Name |
|---|---|
| Relationship | Husband and Wife |
| Address | 319 KOSTER ST MADISON WI 537131405, MADISON, WI 53713-1405 |
| Document Number | 0005307284 |
|---|---|
| Date | Feb 20, 2017 |
| Instrument | 5307284 |
| Name | UNIVERSITY/WI CU |
|---|---|
| Type | Credit Union |
| Address | MADISON, WI 53744-4963 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 360 Months |
| Due | Feb 19, 2047 |
Source: Dane County assessment roll, as of January 1, 2025
| Type | Name |
|---|---|
| State | Wisconsin |
| County | Dane County |
| Municipality | Madison City |
| Unified School District | Madison Metropolitan School District (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $300,900 Land $100,500 Building $200,400 | ||
| 2024 | $5,287.00 | $300,900 | |
| 2023 | $276,100 Land $92,200 Building $183,900 | ||
| 2022 | $4,767.00 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 319 Koster St in Zone X, an area of minimal flood risk.
Source: FEMA National Flood Hazard Layer, effective September 20, 2026 · 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 | 2 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 risk around 319 Koster St is low, with less than a 0.01% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 95% of the US · lower than 88% of Wisconsin |
|---|---|
| Wildfire Likelihood | Under 0.01% annual chance |
| Exposure | Direct burnable vegetation |
Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.
Source: EPA Safe Drinking Water Information System, as of September 2026
| Water System | MADISON WATER UTILITY serves 272,000 people · EPA ID WI1130224 |
|---|---|
| Water Source | Groundwater |
| Last State Inspection | Apr 2023 |
| Lead | 2 ppb (2023) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | Lead service line inventory Oct 2024 |
| Monitoring and Reporting | 1 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.
Source: FCC Broadband Data Collection, based on 270 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 · 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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