620 S 43rd St, Boulder, CO 80305 Property Records

Boulder County property record for 620 S 43rd St, Boulder, CO 80305

Property Summary

Property Type	Single Family Home
Details	3 bd · 2.5 ba · 1,888 sqft · built 1959
Lot Size	0.169 acres (7,340 sqft)
Owner	Individual Name on Record
Tax Bill	$4,179 (2025)
Deeds & Mortgages	Jan 2017 Reverse Mortgage Dec 2016 Mortgage
Flood Zone	Zone X (minimal risk)
APN	`1577-08-1-04-008`

Property Details

APN / Parcel Number

Primary APN	`1577-08-1-04-008`
Alternative APNs	`R0012102` `0012102`

Interior

Bedrooms	3 Beds
Full Baths	2.5 Baths
Half Baths	1 Half Bath
Total Rooms	10 Rooms
Stories	1 Story
Building Area	1,888 sqft Living Area
Gross Area	2,356 sqft
1st Floor Area	1,040 sqft
Basement Area	1,040 sqft
Finished Basement	848 sqft
Unfinished Basement	192 sqft
Interior Walls	Wallboard/Drywall

Exterior

Year Built	Built 1959
Effective Year Built	Effective 1964
Architectural Style	Ranch
Exterior Material	Brick Veneer
Construction Type	Masonry / Concrete Block
Roof Material	Asphalt
Lot Area	7,340 sqft (0.169 acres)
Garage Type	Attached
Garage Area	276 sqft
Parking Spaces	1 Parking Space
Patio Area	240 sqft

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Forced Air with A/C

Location & Zoning

Account Number	R0012102
Street Address	620 S 43RD ST
City	BOULDER
State	CO
Zip	80305-6012
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	LOT 8 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	8
Jurisdiction	BOULDER CO
Township / Civil Division	BOULDER
Census Block Group	3
Census Block	3002
Census Tract	12508

Owner

Source: Boulder County records, as of June 15, 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 Record
Mailing Address	620 S 43RD ST, BOULDER, CO 80305-6012
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Date	Document
Jan 6, 2017	Deed of Trust, Mortgage · Reverse Mortgage FAIRWAY INDEPENDENT MORTGAGE CORP
Dec 23, 2016	Deed of Trust, Mortgage · FHA Mortgage HUD-HOUSING/URBAN DEV

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Jun 5, 1992
Deed Sale	Jun 5, 1992
Prior Sale	Jan 15, 1988 · Amount on Record
Deed Document Number	19921190824
Record Updated	Sep 20, 2026

January 2017: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BOULDER CO
Property Address	620 S 43RD ST, BOULDER, CO 80305-6012
Transaction Type	Mortgage
Record Updated	Feb 7, 2021
Title Company	CAPITAL TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0003567354
Date	Jan 6, 2017
Instrument	3567354

Lender

Name	FAIRWAY INDEPENDENT MORTGAGE CORP
Type	Mortgage Company
Address	CARROLLTON, TX 75007

Agreement

Type	Reverse Mortgage
Amount	Amount Recorded

Interest

Rate Type	Adjustable Rate
Rate	4.94%
Type Change Date	Jan 1, 2018
Change Frequency	Monthly
Min Rate At Change	2%
Index	LIBOR
Max Rate	5%

December 2016: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BOULDER CO
Property Address	620 S 43RD ST, BOULDER, CO 80305-6012
Document Number	0003567355
Instrument Date	Dec 23, 2016
Transaction Type	Mortgage
Record Updated	Jan 8, 2019
Title Company	CAPITAL TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Husband and Wife
Address	620 S 43RD ST BOULDER CO 803056012, BOULDER, CO 80305-6012

Mortgage

Document Number	0003567355
Date	Jan 6, 2017
Instrument	3567355

Lender

Name	HUD-HOUSING/URBAN DEV
Address	WASHINGTON, DC 20410

Agreement

Type	FHA Mortgage
Amount	Amount Recorded
Term	1032 Months

Interest

Rate Type	Adjustable Rate
Rate	4.94%

Tax Assessment & Valuation

Source: Boulder County assessment roll, as of June 15, 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		$54,488 (+8.8%) Land $32,769 Building $21,719	$801,300 (-) Land $481,900 Building $319,400
2025	$4,179.00 (+3.62%)	$50,082 (-12.29%) Land $30,119 Building $19,963	$801,300 (-5.97%) Land $481,900 Building $319,400
2023	$4,033.00 (+16.36%)	$57,097 (+28.95%) Land $35,590 Building $21,507	$852,200 (+33.76%) Land $531,200 Building $321,000
2022	$3,466.00	$44,278 Land $26,493 Building $17,785	$637,100 Land $381,200 Building $255,900

Assessed value and assessed market value are set for property tax purposes and are not market price estimates.

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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