Dane County property record for 1507 Williamson St, Madison, WI 53703
| Property Type | Duplex |
|---|---|
| Details | 4 bd · 2 ba · 1,952 sqft · built 1894 |
| Lot Size | 0.08 acres (3,494 sqft) |
| Owner | Owner Name on File |
| Last Sale | $204,000 (Dec 2011) |
| Tax Bill | $7,661 (2024) |
| Flood Zone | Zone X (minimal risk) |
| APN | 0710-072-1615-6 |
| Primary APN | 0710-072-1615-6 |
|---|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 10 Rooms |
| Units | 2 Units |
| Stories | 2 Stories |
| Building Area | 1,952 sqft Living Area |
| 1st Floor Area | 1,108 sqft |
| 2nd Floor Area | 844 sqft |
| Basement Area | 1,108 sqft |
| Interior Walls | Plaster |
| Year Built | Built 1894 |
|---|---|
| Effective Year Built | Effective 1970 |
| Architectural Style | Other |
| Exterior Material | Aluminum/Vinyl |
| Foundation Type | Stone |
| Roof Material | Asphalt |
| Lot Area | 3,494 sqft (0.08 acres) |
| Driveway | Driveway |
| Driveway Area | 84 sqft |
| Parking Spaces | 1 Parking Space |
| Porch | Open Porch |
|---|---|
| Porch Area | 90 sqft |
| Deck Area | 156 sqft |
| Patio Area | 156 sqft |
| Cooling System | Central |
|---|---|
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 1507 WILLIAMSON ST |
|---|---|
| City | MADISON |
| State | WI |
| Zip | 53703-3728 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Duplex |
| Local Zoning Code | HIS-TL, NMX |
| Legal Description | CANTWELLS REPLAT, BEING ALL OF LOTS 2, 4 , 5 & PART OF LOTS 1, 3, 6 & 7, BLK 237 ORIGINAL PLAT, LOT 1 |
| Legal Range | 10 |
| Legal Township | 07 |
| Legal Section | 07 |
| Legal Subdivision | CANTWELLS REPLAT, BEING ALL OF LOTS 2, 4 |
| Legal Block | 237 |
| Legal Lot Number | 1 4 |
| Jurisdiction | DANE WI |
| Township / Civil Division | MADISON |
| Census Block Group | 3 |
| Census Block | 3007 |
| Census Tract | 1901 |
The current owner of 1507 Williamson St bought it in December 2011.
Source: Dane County records, as of January 22, 2026
| Owner of Record | Owner Name on File |
|---|---|
| Mailing Address | 1507 WILLIAMSON ST # A, A, MADISON, WI 53703-3728 |
| Occupancy | Owner Occupied |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Dec 5, 2011 · Amount on File |
| Deed Sale | Dec 5, 2011 · Amount on File |
| Prior Sale | Apr 14, 2011 · Amount on File |
| Deed Document Number | 4819251 |
| Record Updated | Jun 8, 2026 |
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 | $437,500 Land $123,600 Building $313,900 | ||
| 2024 | $7,661.00 | $437,500 | |
| 2023 | $380,400 Land $123,600 Building $256,800 | ||
| 2022 | $6,894.00 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 1507 Williamson St in Zone X, an area of minimal flood risk, within 500 ft of a high-risk flood zone.
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 |
|---|---|
| Nearest Special Flood Hazard Area | Zone AE, within 500 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Policies | 5 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.
The area around 1507 Williamson St has no burnable land within ember reach, so its wildfire risk is not rated.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Not rated no burnable land within ember reach |
|---|
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 599 locations within half a mile, as of December 31, 2025
| Provider | Max 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 |
| LiteWire Fixed Wireless | 100 / 25 |
May also be available: T-Mobile.
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