Dane County property record for 747 Williamson St, Madison, WI 53703
| Property Type | Apartment House (2-4 Units) |
|---|---|
| Details | 6 bd · 6 ba · 1,406 sqft · built 1900 |
| Lot Size | 0.1 acres (4,356 sqft) |
| Owner | Company Name on File |
| Last Sale | $1,875,000 (Oct 2025) |
| Tax Bill | $13,105 (2024) |
| Deeds & Mortgages | Oct 2025 Sale & Mortgage May 2018 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 0709-134-2805-3 |
| Primary APN | 0709-134-2805-3 |
|---|
| Bedrooms | 6 Beds |
|---|---|
| Full Baths | 6 Baths |
| Total Rooms | 24 Rooms |
| Units | 6 Units |
| Stories | 2 Stories |
| Building Area | 1,406 sqft Total Area |
| 1st Floor Area | 1,406 sqft |
| 2nd Floor Area | 1,406 sqft |
| Basement Area | 1,609 sqft |
| Finished Basement | 703 sqft |
| Flooring | Wood |
| Interior Walls | Plaster |
| Year Built | Built 1900 |
|---|---|
| Effective Year Built | Effective 1965 |
| Architectural Style | Other |
| Exterior Material | Aluminum/Vinyl |
| Foundation Type | Stone |
| Roof Material | Asphalt |
| Lot Area | 4,356 sqft (0.1 acres) |
| Driveway | Driveway |
| Driveway Area | 264 sqft |
| Porch | Open Porch |
| Porch Area | 203 sqft |
| Sewer | Municipal |
|---|---|
| Water Source | Commercial |
| Street Address | 747 WILLIAMSON ST |
|---|---|
| City | MADISON |
| State | WI |
| Zip | 53703-4523 |
| Property Category | Commercial |
| Property Type | Residential > Multi-Unit > Apartment House (2-4 Units) |
| Local Zoning Code | HIS-TL, TR-V1 |
| Legal Description | ORIGINAL PLAT, BLK 128, NE 1/2 OF LOT 5 |
| Legal Range | 09 |
| Legal Township | 07 |
| Legal Section | 13 |
| Legal Subdivision | ORIGINAL PLAT, BLK 128, NE 1/2 OF |
| Legal Block | 128 |
| Legal Lot Number | 5 |
| Jurisdiction | DANE WI |
| Township / Civil Division | MADISON |
| Census Block Group | 1 |
| Census Block | 1014 |
| Census Tract | 1901 |
747 Williamson St, a residential property, is owned by a company that bought it in October 2025.
Source: Dane County records, as of January 22, 2026
| Owner of Record | Company Name on File |
|---|---|
| Owner Type | Company |
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 |
|---|---|
| Oct 8, 2025 | Warranty Deed, Transfer · Commercial Mortgage UNIVERSITY OF WISCONSIN CU |
| May 3, 2018 | Grant Deed, Mortgage JOHNSON BK |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Oct 8, 2025 · Amount on File |
| Deed Sale | Oct 8, 2025 · Amount on File |
| Prior Sale | Mar 29, 2006 |
| Deed Document Number | 6055936 |
| Record Updated | Jun 8, 2026 |
| Document Type | Warranty Deed |
|---|---|
| Jurisdiction | DANE WI |
| Recording Date | Oct 8, 2025 |
| Property Address | 747 WILLIAMSON ST, MADISON, WI 53703-4523 |
| Document Number | 0006055936 |
| Instrument Date | Oct 7, 2025 |
| Instrument | 6055936 |
| Transaction Type | Transfer |
| Record Updated | Oct 24, 2025 |
| Amount | Amount on Record |
|---|---|
| Downpayment | Downpayment on Record |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $5,625.00 |
| Amount Accuracy | Rounded by County |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|
| Document Number | 0006055937 |
|---|---|
| Date | Oct 8, 2025 |
| Instrument | 6055937 |
| Name | UNIVERSITY OF WISCONSIN CU |
|---|---|
| Type | Credit Union |
| Address | MADISON, WI 53717 |
| Type | Commercial Mortgage |
|---|---|
| Amount | Amount on Record |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | DANE WI |
| Recording Date | May 3, 2018 |
| Property Address | 747 WILLIAMSON ST, MADISON, WI 53703-4523 |
| Instrument Date | May 1, 2018 |
| Instrument | 5406455 |
| Transaction Type | Mortgage |
| Record Updated | May 22, 2018 |
| Title Company | ATTORNEY ONLY |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|---|
| Relationship | Living Trust |
| Address | 747 WILLIAMSON ST |
| Document Number | 0005406455 |
|---|---|
| Date | May 3, 2018 |
| Instrument | 5406455 |
| Name | JOHNSON BK |
|---|---|
| Type | Bank |
| Address | 159 MARTIN LUTHER KING JR BLVD, MADISON, WI 53703-3311 |
| Amount | Amount on Record |
|---|
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 | $745,000 (-) Land $222,000 Building $523,000 | ||
| 2024 | $13,105.00 | $745,000 (+9.56%) Land $222,000 Building $523,000 | $745,000 |
| 2023 | $680,000 (+5.43%) Land $202,000 Building $478,000 | ||
| 2022 | $12,696.00 (+6.03%) | $645,000 Land $184,000 Building $461,000 | |
| 2021 | $11,974.00 |
Assessed value is set for property tax purposes, not a market price estimate; it is a fraction of this property's market value.
FEMA maps place 747 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 | 6 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 747 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 427 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber · Fixed Wireless, DSL in parts of the area | 5,000 / 5,000 |
| Spectrum Cable · Fiber in parts of the area | 1,000 / 1,000 |
| Verizon Fixed Wireless | 1,000 / 75 |
| LiteWire Fixed Wireless · Fiber in parts of the area | 100 / 25 |
| T-Mobile Fixed Wireless | 100 / 20 |
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