3121 4th St, Boulder, CO 80304 Property Records

Boulder County property record for 3121 4th St, Boulder, CO 80304 · Last verified June 2026

Property Highlights

Property Type	Residential > Single Family > Home
Bedrooms	2 Beds
Bathrooms	1.75 Baths
Year Built	Built 1956
Square Footage	1,872 sqft Living Area
Lot Size	6,176 sqft (0.142 acres)
Occupancy	Owner Occupied
Last Sale	$310,000 (1999)
Tax Bill	$6,268.00 (2025)

Owner

Source: Boulder County records · APN 1461-24-3-08-014

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	2 Individual Names on File
Mailing Address	3121 4TH ST, BOULDER, CO 80304-2544
Occupancy	Owner Occupied
Owner Type	Owner is an Individual, Couple or Unincorporated Entity

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Verified Names on Deed
Last Sale	Jun 02, 1999 · Amount on Record
Deed Sale	Jun 02, 1999 · Amount on Record
Prior Sale	Jul 01, 1991 · Amount on Record
Deed Doc Number	19991945696
Record Refreshed	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		$78,322 (+8.8%) Land $70,490 Building $7,832	$1,151,800 (-) Land $1,036,620 Building $115,180
2025	$6,268.00 (+1.94%)	$71,988 (-11.78%) Land $64,789 Building $7,199	$1,151,800 (-5.43%) Land $1,036,620 Building $115,180
2023	$6,149.00 (+20.38%)	$81,599 (+31.7%) Land $73,439 Building $8,160	$1,217,900 (+36.61%) Land $1,096,110 Building $121,790
2022	$5,108.00	$61,959 Land $55,763 Building $6,196	$891,500 Land $802,350 Building $89,150

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 X
Flood Hazard	Minimal
500-Year Floodplain	No
Special Flood Hazard Area	No

Wildfire

Wildfire Risk	High above 77% of the US · above 78% of Colorado
Wildfire Likelihood	About 1 in 175 per year
Exposure	Direct burnable vegetation at the parcel

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

Property Details

APN / Parcel Number

Primary APN	`1461-24-3-08-014`
Alternative APNs	`R0008017` `0008017`

Interior

Bedrooms	2 Beds
Full Baths	1.75 Baths
Partial Baths	1 Partial Baths
Total Rooms	5 Rooms
Building Area	1,872 sqft Living Area
1st Floor	936 sqft 1st Floor
Basement Area	936 sqft Basement
Finished Basement	936 sqft Finished
Stories	1 Stories
Interior Structure	Plaster Interior Structure

Exterior

Year Built	Built 1956
Effective Year Built	Effective 1956
Architectural Style	Ranch Style
Exterior Material	Combination Exterior
Construction Type	Frame Construction
Lot Area	6,176 sqft (0.142 acres)
Garage Area	168 sqft Garage

Utilities and HVAC

Heating System	Forced Air with Air Conditioning Heating

Location & Zoning

Account Number	R0008017
Street Address	3121 4TH ST
City	BOULDER
State	CO
Zip	80304-2544
Property Usage	Residential Property Usage
Type	Residential > Single Family > Home
Legal Description	LOTS 29-30 BLK 44 NEWLANDS
Legal Range	71
Legal Township	1N
Legal Section	24
Legal Subdivision	NEWLANDS - BO
Legal Block	44
Legal Lot Number	29
Jurisdiction	BOULDER CO
Minor Civil Division	BOULDER
Census Blockgroup	3
Census Block	3010
Census Tract	12101