3580 Arthur Ct, Boulder, CO 80304 Property Records

Boulder County property record for 3580 Arthur Ct, Boulder, CO 80304 · Last verified June 2026

Property Summary

Property Type	Multi-Family Dwellings
Details	8 bd · 4 ba · 4,104 sqft · built 1971
Lot Size	0.173 acres (7,545 sqft)
Owner	Company Name on File
Last Sale	$191,400 (May 1994)
Tax Bill	$8,960 (2025)
Flood Zone	Zone X (minimal risk)
APN	`1463-20-2-05-018`

Property Details

APN / Parcel Number

Primary APN	`1463-20-2-05-018`
Alternative APNs	`R0003534` `0003534`

Interior

Bedrooms	8 Beds
Full Baths	4 Baths
Total Rooms	16 Rooms
Units	8 Units
Building Area	4,104 sqft Living Area
Gross Area	4,616 sqft
1st Floor Area	2,056 sqft
Upper Floors Area	2,048 sqft
Basement Area	512 sqft
Interior Walls	Wallboard/Drywall

Exterior

Year Built	Built 1971
Effective Year Built	Effective 1971
Architectural Style	A-Frame
Exterior Material	Wood Shingle
Construction Type	Frame
Roof Material	Asphalt
Lot Area	7,545 sqft (0.173 acres)

Utilities, Heating & Cooling

Heating System	Hot Water

Location & Zoning

Account Number	R0003534
Street Address	3580 ARTHUR CT
City	BOULDER
State	CO
Zip	80304-2007
Property Category	Residential
Property Type	Residential > Multi-Unit > Multi-Family Dwellings
Legal Description	LOT 20 SHERWOOD ESTATES 1
Legal Range	70
Legal Township	1N
Legal Section	20
Legal Subdivision	SHERWOOD ESTATES 1 - BO
Legal Block	3
Legal Lot Number	20
Jurisdiction	BOULDER CO
Township / Civil Division	BOULDER
Census Block Group	3
Census Block	3010
Census Tract	12103

Owner

Source: Boulder County records · APN 1463-20-2-05-018

Assessment roll updated June 15, 2026 · Last verified June 2026

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	2400 28TH ST, 301, BOULDER, CO 80301-1241
Owner Type	Company
Vesting	Company

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	Verified Name on Deed
Last Sale	May 24, 1994 · Amount on Record
Deed Sale	May 24, 1994 · Amount on Record
Prior Sale	Sep 23, 1985 · Amount on Record
Deed Document Number	19941430243
Record Updated	Sep 20, 2026

Tax Assessment & Valuation

Source: Boulder County records · Assessment roll updated June 15, 2026 · Last verified June 2026

Property Jurisdictions

Type	Name
State	Colorado
County	Boulder County
Municipality	Boulder City
Unified School District	Boulder Valley School District RE-2 (PK - 12)

Tax Bill & Assessment History

Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.

Year	Tax Bill	Assessed Value	Assessed Market Value
2026		$98,566 (+8.8%) Land $54,740 Building $43,826	$1,449,500 (-) Land $805,000 Building $644,500
2025	$8,960.00 (+12.45%)	$90,594 (-2.04%) Land $50,313 Building $40,281	$1,449,500 (+5.01%) Land $805,000 Building $644,500
2023	$7,968.00 (+16.03%)	$92,480 (+30.77%) Land $57,158 Building $35,322	$1,380,300 (+32.72%) Land $853,100 Building $527,200
2022	$6,867.00	$70,720 Land $41,344 Building $29,376	$1,040,000 Land $608,000 Building $432,000

Flood & Wildfire

Source: FEMA National Flood Hazard Layer, Boulder County (08013C), updated October 14, 2026 · FEMA OpenFEMA NFIP redacted claims and policies, census block group 080130121033, refreshed September 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026

Flood

FEMA Flood Zone	Zone X
Special Flood Hazard Area	No
Flood Hazard	Minimal
500-Year Floodplain	No
Flood Insurance Cost	Premium on Record median of 28 individual NFIP policies nearby
Community Rating System	Class 5 (25% premium discount)
Nearby Flood Policies	58 units insured 30 under condo master policies
Nearby Flood Claims	18 (1995–2022)
Claims Outside the SFHA	9 of 18
Most Recent Claim	Oct 2022, rainfall accumulation
Claims By Storm	Severe Storms, Flooding, Landslides, And Mudslides, Sep 2013 · 15 claims

Wildfire

Wildfire Risk	Not rated no burnable land in reach
Wildfire Likelihood	Negligible
Exposure	None beyond ember reach

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.

Internet Providers

Source: FCC Broadband Data Collection, availability as of December 31, 2025 · Published October 2026 · based on 288 locations within about half a mile of this property

Provider	Technology	Download / Upload (Mbps)
Ayva	Fixed Wireless (unlicensed)	2,500 / 2,500
Xfinity	Cable	2,000 / 250
Live Wire Networks	Fixed Wireless (licensed-by-rule)	250 / 100
Lumen Technologies	DSL	140 / 20
AT&T	Fixed Wireless	100 / 20
T-Mobile USA	Fixed Wireless	100 / 20

May also be available at this address: Verizon, Lumen Technologies, Xfinity. Availability varies by address; speeds are provider-advertised maximums, not measured.