615 Spring St, Sun Prairie, WI 53590 Property Records

Dane County property record for 615 Spring St, Sun Prairie, WI 53590

Property Summary

Property Type	Commercial
Lot Size	15.3 acres (669,866 sqft)
Owner	Company Name on File
Last Sale	$55,250,000 (Oct 2026)
Tax Bill	$289,481 (2025)
Deeds & Mortgages	Oct 2026 Sale Jun 2021 Mortgage + 1 more
Flood Zone	Zone X (minimal risk)
APN	`0810-123-8703-2`

Property Details

APN / Parcel Number

Primary APN	`0810-123-8703-2`

Exterior

Lot Area	669,866 sqft (15.3 acres)

Location & Zoning

Street Address	615 SPRING ST
City	SUN PRAIRIE
State	WI
Zip	53590-9325
Property Category	Commercial
Property Type	Commercial > Retail
Legal Description	LOT 1 CSM 14528 CS100/137&140-6/5/2017 F/K/A LOT 2 CSM 14161 CS95/284&287-2/1/20 16 DESCR AS SEC 12-8-10 PRT NW1/4SW1/4 (15.377 ACRES) SUBJ TO PUBL TRL ESMT IN D OC #5332426 & SUBJ TO R/W IN DOC #5615305
Legal Range	10E
Legal Township	08N
Legal Section	12
Legal Block	87
Legal Lot Number	1,2
Jurisdiction	DANE WI
Township / Civil Division	SUN PRAIRIE
Census Block Group	2
Census Block	2053
Census Tract	11504

Owner

615 Spring St, a commercial property, is owned by a company that bought it in October 2026.

Source: Dane County records, as of October 14, 2026

Owner of Record	Company Name on File
Mailing Address	9757 NE JUANITA DR, 300, KIRKLAND, WA 98034-4291
Owner Type	Company
Vesting	Limited Liability Partnership

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

Deeds, Mortgages & Sale History

Date	Document
Oct 1, 2026	Warranty Deed, Transfer NONE LISTED ON DOCUMENT
Jun 2, 2021	Deed of Trust, Mortgage · Commercial Mortgage GIM COMMERCIAL MTG LOAN FUND
Dec 20, 2019	Grant Deed, Mortgage · Line of Credit FEDERAL HM LN MTG

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Oct 1, 2026 · Amount on File
Deed Sale	Oct 1, 2026 · Amount on File
Deed Document Number	20266128460
Record Updated	Oct 29, 2026

October 2026: Warranty Deed, Transfer

Document Type	Warranty Deed
Jurisdiction	DANE WI
Recording Date	Oct 1, 2026
Property Address	615 SPRING ST, SUN PRAIRIE, WI 53590-9325
Document Number	0006128460
Instrument Date	Sep 29, 2026
Instrument	20266128460
Transaction Type	Transfer
Record Updated	Oct 13, 2026
Title Company	NONE LISTED ON DOCUMENT

Transaction

Amount	Amount on Record
Tax	$16,740,750.00
Amount Accuracy	Full Amount Stated
Additional	Arm's Length Multiple Parcels

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Limited Liability Partnership
Address	9757 NE JUANITA DR, 300, KIRKLAND, WA 98034-4291

June 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	DANE WI
Property Address	615 SPRING ST, SUN PRAIRIE, WI 53590-9325
Transaction Type	Mortgage
Record Updated	Mar 15, 2022

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0005735103
Date	Jun 2, 2021
Instrument	5735103

Lender

Name	GIM COMMERCIAL MTG LOAN FUND
Type	Mortgage Company

Agreement

Type	Commercial Mortgage
Amount	Amount on Record

Interest

Rate Type	Fixed Rate

December 2019: Grant Deed, Mortgage

Document Type	Grant Deed
Jurisdiction	DANE WI
Recording Date	Dec 20, 2019
Property Address	615 SPRING ST, SUN PRAIRIE, WI 53590-9325
Instrument Date	Dec 19, 2019
Instrument	5550323
Transaction Type	Mortgage
Record Updated	Jan 16, 2020
Title Company	FIRST AMERICAN TITLE-NCS MILWA

Transaction

Tax	$0.00
Additional	Multiple Parcels

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Company
Address	W134N8675 EXECUTIVE PKWY MENOMONEE FALLS WI 530513310, MENOMONEE FALLS, WI 53051-3310

Mortgage

Document Number	0005550323
Date	Dec 20, 2019
Instrument	5550323

Lender

Name	FEDERAL HM LN MTG
Type	Mortgage Company
Address	26901 AGOURA RD # 200, CALABASAS HILLS, CA 91301-5109

Agreement

Type	Line of Credit
Amount	Amount on Record
Term	60 Months
Due	Dec 19, 2024

Interest

Rate Type	Adjustable Rate

Tax Assessment & Valuation

The 2025 property tax bill for 615 Spring St was $289,481.

Source: Dane County assessment roll, as of March 16, 2026

Property Jurisdictions

Type	Name
State	Wisconsin
County	Dane County
Municipality	Sun Prairie City
Unified School District	Sun Prairie Area School District (PK - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value	Assessed Market Value
2025	$289,481.00	$14,137,800 Land $1,141,000 Building $12,996,800	$16,032,800
2023		$14,137,800 Land $1,141,000 Building $12,996,800	$14,139,200
2022	$251,160.00

Assessed value is set for property tax purposes, not a market price estimate; it is a fraction of this property's market value.

Flood

FEMA maps place 615 Spring St in Zone X, an area of minimal flood risk.

Source: FEMA National Flood Hazard Layer, effective September 20, 2026

FEMA Flood Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it

Values are read at the parcel center point; lenders make the official flood determination.

Wildfire

Wildfire risk around 615 Spring St is low, with a 0.02% 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	0.02% annual chance
Exposure	None beyond 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	SUN PRAIRIE UTILITIES serves 39,300 people · EPA ID WI1130258
Water Source	Groundwater
Last State Inspection	Feb 2026
Lead	3 ppb (2023) action level 15 ppb

Violations Reported to EPA

Water Quality	Fluoride resolved · Jan 2023
Treatment and Procedure	None last 10 years
Monitoring and Reporting	None 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. The service area is an EPA estimate; the actual supplier may differ.

Internet Providers

Source: FCC Broadband Data Collection, based on 80 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
TDS Telecom Fiber	8,000 / 8,000
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: Bertram Communications, Frontier, T-Mobile.

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