600 Williamson St, Madison, WI 53703 Property Records

Dane County property record for 600 Williamson St, Madison, WI 53703

Property Summary

Property Type	Neighborhood Shopping Center, Strip Center
Details	34,848 sqft · built 1985
Lot Size	1.56 acres (68,041 sqft)
Owner	Company Name on Record
Last Sale	$1,873,000 (Jul 1999)
Tax Bill	$72,746 (2024)
Deeds & Mortgages	Jun 2022 Mortgage Jun 2022 Mortgage + 5 more
Flood Zone	Zone X (minimal risk)
APN	`0709-134-1902-8`

Property Details

APN / Parcel Number

Primary APN	`0709-134-1902-8`

Interior

Stories	1 Story
Building Area	34,848 sqft Total Area
1st Floor Area	7,128 sqft
Flooring	Carpet
Interior Walls	Wallboard/Drywall

Exterior

Year Built	Built 1985
Exterior Material	Brick
Foundation Type	Concrete
Roof Material	Asphalt
Lot Area	68,041 sqft (1.56 acres)
Driveway	Driveway
Driveway Area	205 sqft

Utilities, Heating & Cooling

Sewer	Municipal
Water Source	Commercial

Location & Zoning

Street Address	600 WILLIAMSON ST
City	MADISON
State	WI
Zip	53703-3588
Property Category	Commercial
Property Type	Commercial > Retail > Neighborhood Shopping Center, Strip Center
Local Zoning Code	HIS-TL, TE, WP-17
Legal Description	ORIGINAL PLAT, BLK 125, LOTS 4, 5, 6, 7, 8 & PRT LOTS 2, 3, 12, 13, 14, 15 & 16, DESC AS FOL: BEG INTERS OF LOT 3 & 4 & SELY
Legal Range	09
Legal Township	07
Legal Section	13
Legal Subdivision	ORIGINAL PLAT, BLK 125, LOTS 4, 5, 6, 7
Legal Block	125
Legal Lot Number	3 4
Jurisdiction	DANE WI
Township / Civil Division	MADISON
Census Block Group	1
Census Block	1013
Census Tract	1901

Owner

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	Company Name on Record
Mailing Address	345 W WASHINGTON AVE, MADISON, WI 53703-2996
Owner Type	Company

Deeds, Mortgages & Sale History

Date	Document
Jun 24, 2022	Deed of Trust, Mortgage · Commercial Mortgage SUMMIT CU
Jun 27, 2022	Deed of Trust, Mortgage · Commercial Mortgage SUMMIT CU
Sep 18, 2023	Deed of Trust, Mortgage · Commercial Mortgage SUMMIT CU
Jan 2, 2026	Deed of Trust, Mortgage · Commercial Mortgage SUMMIT CU
Mar 31, 2025	Deed of Trust, Mortgage · Commercial Mortgage SUMMIT CU
Jul 25, 2018	Deed of Trust, Mortgage · Commercial Mortgage SUMMIT CU
Jun 28, 2018	Deed of Trust, Mortgage · Line of Credit SUMMIT CU

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Jul 1, 1999 · Amount on Record
Deed Sale	Jul 1, 1999 · Amount on Record
Deed Document Number	0093138119
Record Updated	Sep 20, 2026

June 2022: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	DANE WI
Property Address	600 WILLIAMSON ST, MADISON, WI 53703-3588
Transaction Type	Mortgage
Record Updated	May 25, 2026

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0005843453
Date	Jun 24, 2022
Instrument	5843453

Lender

Name	SUMMIT CU
Type	Credit Union

Agreement

Type	Commercial Mortgage
Amount	Amount Recorded

Interest

Rate Type	Fixed Rate

June 2022: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	DANE WI
Property Address	600 WILLIAMSON ST, MADISON, WI 53703-3588
Transaction Type	Mortgage
Record Updated	May 25, 2026

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0005843681
Date	Jun 27, 2022
Instrument	5843681

Lender

Name	SUMMIT CU
Type	Credit Union

Agreement

Type	Commercial Mortgage
Amount	Amount Recorded

Interest

Rate Type	Adjustable Rate

September 2023: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	DANE WI
Property Address	600 WILLIAMSON ST, MADISON, WI 53703-3588
Transaction Type	Mortgage
Record Updated	May 25, 2026

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0005924531
Date	Sep 18, 2023
Instrument	5924531

Lender

Name	SUMMIT CU
Type	Credit Union

Agreement

Type	Commercial Mortgage
Amount	Amount Recorded

January 2026: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	DANE WI
Property Address	600 WILLIAMSON ST, MADISON, WI 53703-3588
Transaction Type	Mortgage
Record Updated	May 25, 2026

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0006073262
Date	Jan 2, 2026
Instrument	6073262

Lender

Name	SUMMIT CU
Type	Credit Union
Address	WAUNAKEE, WI 53597

Agreement

Type	Commercial Mortgage
Amount	Amount Recorded

March 2025: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	DANE WI
Property Address	600 WILLIAMSON ST, MADISON, WI 53703-3588
Transaction Type	Mortgage
Record Updated	May 25, 2026

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0006018398
Date	Mar 31, 2025
Instrument	6018398

Lender

Name	SUMMIT CU
Type	Credit Union

Agreement

Type	Commercial Mortgage
Amount	Amount Recorded

Interest

Rate Type	Adjustable Rate

July 2018: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	DANE WI
Property Address	600 WILLIAMSON ST, MADISON, WI 53703-3588
Transaction Type	Mortgage
Record Updated	Feb 5, 2021

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0005428008
Date	Jul 25, 2018
Instrument	5428008

Lender

Name	SUMMIT CU
Type	Credit Union

Agreement

Type	Commercial Mortgage
Amount	Amount Recorded

Interest

Rate Type	Fixed Rate

June 2018: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	DANE WI
Property Address	600 WILLIAMSON ST, MADISON, WI 53703-3588
Document Number	0005456399
Instrument Date	Jun 28, 2018
Transaction Type	Mortgage
Record Updated	Dec 17, 2018

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Company
Address	131 W WILSON ST #301 MADISON WI 537033270, 301, MADISON, WI 53703-3270

Mortgage

Document Number	0005456399
Date	Nov 27, 2018
Instrument	5456399

Lender

Name	SUMMIT CU
Address	MADISON, WI 53708-8046

Agreement

Type	Line of Credit
Amount	Amount Recorded

Interest

Rate Type	Adjustable 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		$4,114,000 (+7%) Land $2,245,000 Building $1,869,000
2024	$72,746.00 (+5.9%)		$4,114,000
2023		$3,845,000 Land $2,245,000 Building $1,600,000
2022	$68,694.00

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 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

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 261 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
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
AT&T DSL · Fiber, Fixed Wireless in parts of the area	100 / 20

May also be available: Four Lakes Broadband.

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