1666 Nelson Ave, Beloit, WI 53511 Property Records

Rock County property record for 1666 Nelson Ave, Beloit, WI 53511

Property Summary

Property Type	Single Family Home
Details	2 bd · 1 ba · 828 sqft · built 1946
Lot Size	0.133 acres (5,793 sqft)
Owner	Individual Name on File
Tax Bill	$1,305 (2025)
Flood Zone	Zone X (minimal risk)
APN	`206 12571465`

Property Details

APN / Parcel Number

Primary APN	`206 12571465`
Alternative APN	`12571465`

Interior

Bedrooms	2 Beds
Full Baths	1 Bath
Total Rooms	4 Rooms
Stories	1 Story
Building Area	828 sqft Living Area

Exterior

Year Built	Built 1946
Effective Year Built	Effective 1946
Lot Area	5,793 sqft (0.133 acres)

Location & Zoning

Account Number	206 12571465
Street Address	1666 NELSON AVE
City	BELOIT
State	WI
Zip	53511-3608
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	L 7 B 2 RADTKES ADD
Legal Subdivision	RADTKES ADD
Legal Lot Number	7
Jurisdiction	ROCK WI
Township / Civil Division	BELOIT
Census Block Group	2
Census Block	2006
Census Tract	1800

Owner

Source: Rock County assessment roll, APN 206 12571465, as of April 2, 2026 · Last verified July 2026

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of Record	Individual Name on File
Mailing Address	1666 NELSON AVE, BELOIT, WI 53511-3608
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	Verified Name on Deed
Record Updated	Sep 20, 2026

Tax Assessment & Valuation

Source: Rock County assessment roll as of April 2, 2026 · Last verified July 2026

Property Jurisdictions

Type	Name
State	Wisconsin
Municipality	Beloit City
County	Rock County
Unified School District	Beloit School District (PK - 12)

Tax Bill & Assessment History

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

Year	Tax Bill	Assessed Value	Assessed Market Value
2025	$1,305.00 (+24.88%) Homeowner's exemption	$89,500 (+18.39%) Land $8,800 Building $80,700	$98,300 (+14.3%)
2023	$1,045.00 Homeowner's exemption	$75,600 Land $8,800 Building $66,800	$86,000

Flood & Wildfire

Source: FEMA National Flood Hazard Layer, Rock County (55105C), as of May 3, 2017 · USDA Forest Service Wildfire Risk to Communities, 2nd edition, as of 2020 · Last verified October 2026

Flood

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

Wildfire

Wildfire Risk	Low lower than 99.1% of the US · lower than 97.9% of Wisconsin
Wildfire Likelihood	Under 0.01% annual chance
Exposure	None beyond ember reach

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

Internet Providers

Source: FCC Broadband Data Collection, 670 locations within half a mile, as of December 31, 2025 · Last verified October 2026

Provider	Max Down / Up (Mbps)
Spectrum Cable · Fiber in parts of the area	1,000 / 1,000
Verizon Fixed Wireless	300 / 20
ResTech Services Fixed Wireless	100 / 25
AT&T Fixed Wireless · Fiber, DSL in parts of the area	100 / 20

May also be available: Hilbert Communications, T-Mobile USA.

Drinking Water

Source: EPA Safe Drinking Water Information System, water system WI1540112, as of 2026 Q3 · EPA water system boundaries as of March 2026 · Last verified October 2026

Water System	CITY OF BELOIT serves 36,677 people
Water Source	Groundwater
Last State Inspection	Nov 2024
Lead	5 ppb (2023) action level 15 ppb

Violations Reported to EPA

Water Quality	Radium resolved · Oct 2019
Treatment and Procedure	None last 10 years
Monitoring and Reporting	1 last 3 years

Results are for the whole water system as reported to EPA, 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. This system sells water to local utilities; the supplier billing this address may be one of them. The full violation and enforcement history is in the system's EPA record.