3580 4th St, Boulder, CO 80304 Property Records

Boulder County property record for 3580 4th St, Boulder, CO 80304 · Last verified June 2026

Property Summary

Property Type	Single Family Home
Details	3 bd · 2.25 ba · 2,110 sqft · built 2003
Lot Size	0.33 acres (14,384 sqft)
Owner	Individual Name on File
Last Sale	$110,000 (Nov 1985)
Tax Bill	$14,494 (2025)
Flood Zone	Zone AE (high risk)
APN	`1461-24-1-00-045`

Property Details

APN / Parcel Number

Primary APN	`1461-24-1-00-045`
Alternative APNs	`R0001619` `0001619`

Interior

Bedrooms	3 Beds
Full Baths	2.25 Baths
Half Baths	2 Half Baths
Total Rooms	7 Rooms
Stories	2 Stories
Building Area	2,110 sqft Living Area
Gross Area	4,043 sqft
1st Floor Area	1,390 sqft
Upper Floors Area	720 sqft
Basement Area	1,372 sqft
Interior Walls	Wallboard/Drywall

Exterior

Year Built	Built 2003
Effective Year Built	Effective 2003
Architectural Style	A-Frame
Exterior Material	Combination
Construction Type	Frame
Roof Material	Asphalt
Lot Area	14,384 sqft (0.33 acres)
Garage Type	Attached
Garage Area	561 sqft
Parking Spaces	2 Parking Spaces
Patio Area	382 sqft

Utilities, Heating & Cooling

Heating System	Radiant

Location & Zoning

Account Number	R0001619
Street Address	3580 4TH ST
City	BOULDER
State	CO
Zip	80304-1704
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	TRACT 386 LESS A 24-1N-71 BOOK 730 PAGE 455 BCR
Legal Range	71
Legal Township	1N
Legal Section	24
Legal Subdivision	TR, NBR 128,158,172-178 FOOTHILLS
Legal Tract	386
Legal Block	2
Jurisdiction	BOULDER CO
Township / Civil Division	BOULDER
Census Block Group	2
Census Block	2009
Census Tract	12101

Owner

Source: Boulder County records · APN 1461-24-1-00-045

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	Individual Name on File
Mailing Address	3580 4TH ST, BOULDER, CO 80304-1704
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	Verified Name on Deed
Last Sale	Nov 06, 1985 · Amount on Record
Deed Sale	Nov 06, 1985 · Amount on Record
Prior Sale	May 03, 1977 · Amount on Record
Deed Document Number	1985724289
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 and are not market price estimates.

Year	Tax Bill	Assessed Value	Assessed Market Value
2026		$172,189 (+8.8%) Land $137,210 Building $34,979	$2,532,200 (-) Land $2,017,800 Building $514,400
2025	$14,494.00 (-2.21%)	$158,263 (-13.05%) Land $126,113 Building $32,150	$2,532,200 (-6.78%) Land $2,017,800 Building $514,400
2023	$14,821.00 (+13.78%)	$182,006 (+23.63%) Land $138,898 Building $43,108	$2,716,500 (+28.24%) Land $2,073,100 Building $643,400
2022	$13,026.00	$147,222 Land $99,726 Building $47,496	$2,118,300 Land $1,434,900 Building $683,400

Flood & Wildfire

Source: FEMA National Flood Hazard Layer, Boulder County (08013C), updated October 14, 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026

Flood

FEMA Flood Zone	Zone AE
Flood Hazard	High
100-Year Floodplain	Yes 1% annual chance
Special Flood Hazard Area	Yes
Flood Insurance Requirement	Required (federally backed mortgages)
Floodway	No
Base Flood Elevation	Varies along the reach; see FIRM

Wildfire

Wildfire Risk	High above 76% of the US · above 76% of Colorado
Wildfire Likelihood	About 1 in 195 per year
Exposure	Direct burnable vegetation at the parcel

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