645 S 44th St, Boulder, CO 80305 Property Records

Boulder County property record for 645 S 44th St, Boulder, CO 80305

Property Summary

Property Type	Single Family Home
Details	3 bd · 1.5 ba · 1,040 sqft · built 1959
Lot Size	0.16 acres (6,967 sqft)
Owner	Company Name on Record
Last Sale	$395,300 (Aug 2013)
Tax Bill	$4,457 (2025)
Deeds & Mortgages	Oct 2022 Transfer Apr 2021 Mortgage
Flood Zone	Zone X (minimal risk)
APN	`1577-08-1-04-026`

Property Details

APN / Parcel Number

Primary APN	`1577-08-1-04-026`
Alternative APNs	`R0013279` `0013279`

Interior

Bedrooms	3 Beds
Full Baths	1.5 Baths
Half Baths	1 Half Bath
Total Rooms	5 Rooms
Stories	1 Story
Building Area	1,040 sqft Living Area
Gross Area	2,300 sqft
1st Floor Area	1,040 sqft
Basement Area	1,040 sqft
Interior Walls	Wallboard/Drywall

Exterior

Year Built	Built 1959
Effective Year Built	Effective 1959
Architectural Style	Ranch
Exterior Material	Brick Veneer
Construction Type	Masonry / Concrete Block
Lot Area	6,967 sqft (0.16 acres)
Garage Type	Attached
Garage Area	220 sqft
Parking Spaces	2 Parking Spaces
Porch	Porch
Porch Area	84 sqft
Patio Area	140 sqft

Utilities, Heating & Cooling

Heating System	Forced Air with A/C

Location & Zoning

Account Number	R0013279
Street Address	645 S 44TH ST
City	BOULDER
State	CO
Zip	80305-6021
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	LOT 26 BLK 4 MARTIN ACRES 3
Legal Range	70
Legal Township	1S
Legal Section	05
Legal Subdivision	MARTIN ACRES 3 - BO
Legal Block	4
Legal Lot Number	26
Jurisdiction	BOULDER CO
Township / Civil Division	BOULDER
Census Block Group	3
Census Block	3002
Census Tract	12508

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	Company Name on Record
Mailing Address	645 S 44TH ST, BOULDER, CO 80305-6021
Owner Type	Company
Vesting	Borrower in Default

Deeds, Mortgages & Sale History

Date	Document
Oct 12, 2022	Intrafamily Transfer, Transfer
Apr 19, 2021	Deed of Trust, Mortgage · Conventional Mortgage STRONG HOME MORTGAGE LLC

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Aug 22, 2013 · Amount on Record
Deed Sale	Aug 22, 2013 · Amount on Record
Prior Sale	Mar 26, 2002 · Amount on Record
Deed Document Number	20133337111
Prior Transfer Date	Feb 14, 2008
Prior Transfer Doc	0002910262
Record Updated	Oct 29, 2026

October 2022: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	BOULDER CO
Recording Date	Oct 12, 2022
Property Address	645 S 44TH ST, BOULDER, CO 80305-6021
Document Number	0003984725
Instrument Date	Oct 11, 2022
Instrument	3984725
Transaction Type	Transfer
Record Updated	Oct 18, 2022

Transaction

Tax	$0.00
Amount Accuracy	Transfer Tax Exempt
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	645 S 44TH ST, BOULDER, CO 80305-6021

April 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BOULDER CO
Property Address	645 S 44TH ST, BOULDER, CO 80305-6021
Transaction Type	Mortgage
Record Updated	May 6, 2021
Title Company	NOT AVAILABLE, SOLIDIFI

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0003877789
Date	Apr 19, 2021
Instrument	3877789

Lender

Name	STRONG HOME MORTGAGE LLC
Type	Mortgage Company
Address	MANASSAS, VA 20110

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	179 Months
Due	Mar 1, 2036

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		$46,104 (-1.38%) Land $27,166 Building $18,938	$748,000 (-) Land $469,500 Building $278,500
2025	$4,457.00 (+3.31%)	$46,750 (-12.86%) Land $29,344 Building $17,406	$748,000 (-6.58%) Land $469,500 Building $278,500
2023	$4,314.00 (+8.23%)	$53,647 (+28.65%) Land $34,673 Building $18,974	$800,700 (+33.45%) Land $517,500 Building $283,200
2022	$3,986.00	$41,700 Land $25,812 Building $15,888	$600,000 Land $371,400 Building $228,600

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	5 in force

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	Low lower than 67% of the US · lower than 84% of Colorado
Wildfire Likelihood	0.04% annual chance
Exposure	Indirect within ember reach

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 678 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
Verizon Fixed Wireless	300 / 20
LiveWireNet Fixed Wireless	250 / 100
T-Mobile Fixed Wireless	100 / 20

May also be available: AT&T.

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