2443 6th St, Boulder, CO 80304 Property Records

Boulder County property record for 2443 6th St, Boulder, CO 80304

Property Summary

Property Type	Single Family Home
Details	3 bd · 2.75 ba · 2,325 sqft · built 1911
Lot Size	0.112 acres (4,868 sqft)
Owner	2 Individual Names on Record
Last Sale	$430,000 (Mar 2004)
Tax Bill	$12,279 (2025)
Deeds & Mortgages	Dec 2021 Line of Credit Jul 2021 Mortgage
Flood Zone	Zone X (minimal risk)
APN	`1461-25-4-05-004`

Property Details

APN / Parcel Number

Primary APN	`1461-25-4-05-004`
Alternative APNs	`R0008573` `0008573`

Interior

Bedrooms	3 Beds
Full Baths	2.75 Baths
Half Baths	3 Half Baths
Total Rooms	7 Rooms
Stories	2 Stories
Building Area	2,325 sqft Living Area
Gross Area	2,629 sqft
1st Floor Area	990 sqft
Upper Floors Area	824 sqft
Basement Area	432 sqft
Finished Basement	324 sqft
Unfinished Basement	108 sqft
Interior Walls	Wallboard/Drywall

Exterior

Year Built	Built 1911
Effective Year Built	Effective 1997
Architectural Style	A-Frame
Exterior Material	Wood Shingle
Construction Type	Frame
Roof Material	Asphalt
Lot Area	4,868 sqft (0.112 acres)
Garage Type	Detached
Garage Area	400 sqft
Parking Spaces	2 Parking Spaces
Porch	Enclosed Porch
Porch Area	388 sqft

Utilities, Heating & Cooling

Heating System	Radiant

Location & Zoning

Account Number	R0008573
Street Address	2443 6TH ST
City	BOULDER
State	CO
Zip	80304-3908
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	N 42.8 FT OF S 82.8 OF LOTS 1-4 INC & N 40 FT OF S 80 FT OF E 10 FT & W 10 FT OF S 2.63 FT OF N 102.63 FT LOT 5 BLK 4 MAPLETON
Legal Range	71
Legal Township	1N
Legal Section	25
Legal Subdivision	MAPLETON - BO
Legal Block	4
Legal Lot Number	1
Jurisdiction	BOULDER CO
Township / Civil Division	BOULDER
Census Block Group	4
Census Block	4005
Census Tract	12101

Owner

Source: Boulder County records, as of September 18, 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 Record
Mailing Address	2443 6TH ST, BOULDER, CO 80304-3908
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Date	Document
Dec 14, 2021	Deed of Trust, Mortgage · Line of Credit ZB NA
Jul 6, 2021	Deed of Trust, Mortgage · Conventional Mortgage CHANGE LENDING LLC

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Mar 29, 2004 · Amount on Record
Deed Sale	Mar 29, 2004 · Amount on Record
Deed Document Number	20042570364
Record Updated	Oct 29, 2026

December 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BOULDER CO
Property Address	2443 6TH ST, BOULDER, CO 80304-3908
Transaction Type	Mortgage
Record Updated	Jan 3, 2022
Title Company	ACCURATE TITLE COMPANY LLC

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	2443 6TH ST, BOULDER, CO 80304-3908

Mortgage

Document Number	0003934211
Date	Dec 14, 2021
Instrument	3934211

Lender

Name	ZB NA
Type	Bank
Address	BOULDER, CO 80302

Agreement

Type	Line of Credit
Amount	Amount Recorded

July 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BOULDER CO
Property Address	2443 6TH ST, BOULDER, CO 80304-3908
Transaction Type	Mortgage
Record Updated	Jul 19, 2021
Title Company	FIRST AMERICAN TITLE, FIRST AMERICAN TITLE INS CO

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0003897736
Date	Jul 6, 2021
Instrument	3897736

Lender

Name	CHANGE LENDING LLC
Type	Mortgage Company
Address	IRVINE, CA 92606

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	360 Months
Due	Jul 1, 2051

Tax Assessment & Valuation

Source: Boulder County assessment roll, as of September 18, 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

Year	Tax Bill	Assessed Value	Assessed Market Value
2026		$135,354 (+5.1%) Land $88,407 Building $46,947	$2,060,500 (-) Land $1,370,100 Building $690,400
2025	$12,279.00 (+12.58%)	$128,781 (-0.93%) Land $85,631 Building $43,150	$2,060,500 (+6.2%) Land $1,370,100 Building $690,400
2023	$10,907.00 (+22.19%)	$129,994 (+35.24%) Land $93,231 Building $36,763	$1,940,200 (+40.29%) Land $1,391,500 Building $548,700
2022	$8,926.00	$96,119 Land $60,222 Building $35,897	$1,383,000 Land $866,500 Building $516,500

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.

Flood

Source: FEMA National Flood Hazard Layer, effective October 14, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026

FEMA Flood Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it
Community Rating System	Class 5 (25% premium discount)
Nearby Flood Policies	15 units insured incl. 9 condo units
Nearby Flood Claims	2 (2013)
Most Recent Claim	Sep 2013 · Severe Storms, Flooding, Landslides, And Mudslides

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.

Wildfire

Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024

Wildfire Risk	Moderate above 68% of the US · above 62% of Colorado
Wildfire Likelihood	0.3% annual chance
Exposure	Indirect within ember reach
Adjoins Burnable Land	Yes

Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.

Drinking Water

Source: EPA Safe Drinking Water Information System, as of September 2026

Water System	CITY OF BOULDER serves 166,080 people · EPA ID CO0107152
Water Source	Surface water
Last State Inspection	Sep 2024
Lead	2 ppb (2023–2025) action level 15 ppb

Violations Reported to EPA

Water Quality	Haloacetic acids resolved · Jul 2017
Treatment and Procedure	None last 10 years
Monitoring and Reporting	1 last 3 years

Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes.

Internet Providers

Source: FCC Broadband Data Collection, based on 684 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Ayva Networks Fixed Wireless	2,500 / 2,500
CenturyLink Fiber · DSL in parts of the area	2,000 / 1,000
Xfinity Cable	2,000 / 250
LiveWireNet Fixed Wireless	250 / 100
T-Mobile Fixed Wireless	100 / 20
AT&T Fixed Wireless	100 / 20

May also be available: Verizon.

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