680 Main St, Dubuque, IA 52001 Property Records

Dubuque County property record for 680 Main St, Dubuque, IA 52001

Property Summary

Property Type	Office Building
Details	33,252 sqft · built 1990
Lot Size	0.708 acres (30,862 sqft)
Owner	Company Name on File
Deeds & Mortgages	Mar 2020 Sale
Flood Zone	Zone X (minimal risk)
APN	`10-25-210-001`

Property Details

APN / Parcel Number

Primary APN	`10-25-210-001`

Interior

Stories	2 Stories
Building Area	33,252 sqft Gross Area
1st Floor Area	16,626 sqft
Basement Area	8,000 sqft
Elevator	Elevator

Exterior

Year Built	Built 1990
Lot Area	30,862 sqft (0.708 acres)
Lot Dimensions	113 ft deep x 202 ft wide

Location & Zoning

Street Address	680 MAIN ST
City	DUBUQUE
State	IA
Zip	52001-6806
Property Category	Commercial
Property Type	Commercial > Office > Office Building
Legal Description	BLK 12 & LOT 1 BLK 12A DUBUQUE DOWNTOWN PLAZA
Legal Subdivision	NICC FIRST SUB
Legal Block	12,12A
Legal Lot Number	1
Jurisdiction	DUBUQUE IA
Township / Civil Division	DUBUQUE
Census Block Group	2
Census Block	2002
Census Tract	100

Owner

Source: Dubuque County records · APN 10-25-210-001

Assessment roll updated May 1, 2025 · Last verified October 2025

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

Owner of Record	Company Name on File
Mailing Address	PO BOX 400, CALMAR, IA 52132-0400
Owner Type	Company

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	Verified Name on Deed
Record Updated	Jun 08, 2026

March 2020: Warranty Deed, Transfer

Document Type	Warranty Deed
Jurisdiction	DUBUQUE IA
Recording Date	Mar 13, 2020
Property Address	680 MAIN ST, DUBUQUE, IA 52001-6806
Document Number	0000003081
Instrument Date	Mar 10, 2020
Instrument	3081
Transaction Type	Transfer
Record Updated	Apr 02, 2020
Title Company	NOT AVAILABLE

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Company
Address	8342 NICC DR PEOSTA IA 520689702, PEOSTA, IA 52068-9702

Tax Assessment & Valuation

Source: Dubuque County records · Assessment roll updated May 1, 2025 · Last verified October 2025

Property Jurisdictions

Type	Name
State	Iowa
County	Dubuque County
Municipality	Dubuque City
Unified School District	Dubuque Community 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	Assessed Value	Assessed Market Value
2025	$3,345,800 (+14.64%) Land $333,300 Building $3,012,500	$3,345,800 (+14.64%) Land $333,300 Building $3,012,500
2023	$2,918,500	$2,918,500

Flood & Wildfire

Source: FEMA National Flood Hazard Layer as of August 9, 2021 · USDA Forest Service Wildfire Risk to Communities as of 2024 · Last verified October 2026

Flood

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

Wildfire

Wildfire Risk	Not rated no burnable land within ember reach

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

Internet Providers

Source: FCC Broadband Data Collection as of December 31, 2025 · Last verified October 2026

Provider	Max Down / Up (Mbps)
Mediacom Communications Cable · Fiber in parts of the area	1,000 / 50
Lumen Technologies DSL · Fiber in parts of the area	140 / 20
AT&T Fixed Wireless	100 / 20
T-Mobile USA Fixed Wireless	100 / 20

May also be available: AMG Technology Investment Group, Comelec Services, Hawkeye Topco Holdings, Verizon.

Based on FCC filings for 497 locations within half a mile of this property.

Drinking Water

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

Water System	DUBUQUE WATER WORKS serves 59,667 people
Water Source	Groundwater
Last State Inspection	Jan 2025
Lead	5 ppb (2021–2023) action level 15 ppb

Violations Reported to EPA

Water Quality	None last 10 years
Treatment and Procedure	None last 10 years
Monitoring and Reporting	None 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 full violation and enforcement history is in the system's EPA record.