813 Williamson St, Madison, WI 53703 Property Records

Dane County property record for 813 Williamson St, Madison, WI 53703

Property Summary

Property Type	Triplex
Details	4 bd · 3 ba · 1,902 sqft · built 1874
Lot Size	0.1 acres (4,356 sqft)
Owner	Individual Name on File
Last Sale	$690,000 (Nov 2024)
Tax Bill	$9,939 (2024)
Deeds & Mortgages	Jun 2020 Sale & Mortgage
Flood Zone	Zone X (minimal risk)
APN	`0709-134-1412-7`

Property Details

APN / Parcel Number

Primary APN	`0709-134-1412-7`

Interior

Bedrooms	4 Beds
Full Baths	3 Baths
Half Baths	1 Half Bath
Total Rooms	13 Rooms
Units	3 Units
Stories	2 Stories
Building Area	1,902 sqft Living Area
1st Floor Area	979 sqft
2nd Floor Area	923 sqft
Basement Area	979 sqft
Flooring	Wood
Interior Walls	Plaster

Exterior

Year Built	Built 1874
Effective Year Built	Effective 1972
Architectural Style	Other
Exterior Material	Aluminum/Vinyl
Foundation Type	Stone
Roof Material	Asphalt
Lot Area	4,356 sqft (0.1 acres)
Garage Type	Detached
Garage Area	441 sqft
Driveway	Driveway
Driveway Area	148 sqft
Parking Spaces	2 Parking Spaces

Utilities, Heating & Cooling

Cooling System	Central
Sewer	Municipal
Water Source	Commercial

Location & Zoning

Street Address	813 WILLIAMSON ST
City	MADISON
State	WI
Zip	53703-4572
Property Category	Residential
Property Type	Residential > Multi-Unit > Triplex
Local Zoning Code	HIS-TL, TSS
Legal Description	ORIGINAL PLAT, BLK 148, SW 34 1/2 FT OF LOT 3
Legal Range	09
Legal Township	07
Legal Section	13
Legal Subdivision	ORIGINAL PLAT, BLK 148, SW 34 1/2 FT OF
Legal Block	148
Legal Lot Number	3
Jurisdiction	DANE WI
Township / Civil Division	MADISON
Census Block Group	1
Census Block	1004
Census Tract	1901

Owner

813 Williamson St, a triplex, is owned by an individual who bought it in November 2024.

Source: Dane County records, as of January 22, 2026

Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.

Owner of Record	Individual Name on File
Mailing Address	421 W 43RD ST APT 1W, 1W, NEW YORK, NY 10036-5347
Owner Type	Individual

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Nov 19, 2024 · Amount on File
Deed Sale	Nov 19, 2024 · Amount on File
Prior Sale	Jun 26, 2020 · Amount on File
Deed Document Number	5997272
Record Updated	Jun 8, 2026

June 2020: Warranty Deed, Transfer

Document Type	Warranty Deed
Jurisdiction	DANE WI
Recording Date	Jun 26, 2020
Property Address	813 WILLIAMSON ST, MADISON, WI 53703-4572
Document Number	0005606038
Instrument Date	Jun 15, 2020
Instrument	5606038
Transaction Type	Transfer
Record Updated	Mar 15, 2022
Title Company	KNIGHT BARRY TITLE

Transaction

Amount	Amount on Record
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$1,440.00
Amount Accuracy	Calculated from Transfer Tax
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	561 MEADOWLARK LN, PORTAGE, WI 53901-1291

Mortgage

Document Number	0005606039
Date	Jun 26, 2020
Instrument	5606039

Lender

Name	DMB COMMUNITY BANK

Agreement

Type	Conventional Mortgage
Amount	Amount on Record

Interest

Rate Type	Fixed Rate

Tax Assessment & Valuation

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

Property Jurisdictions

Type	Name
State	Wisconsin
County	Dane County
Municipality	Madison City
Unified School District	Madison Metropolitan School District (PK - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value	Assessed Market Value
2025		$566,200 Land $183,100 Building $383,100
2024	$9,939.00		$566,200
2023		$529,200 Land $183,100 Building $346,100
2022	$9,902.00

Assessed value and assessed market value are set for property tax purposes and are not market price estimates.

Flood

FEMA maps place 813 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.

Wildfire

The area around 813 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.

Drinking Water

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

Violations Reported to EPA

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.

Internet Providers

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