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

Boulder County property record for 660 S 43rd St, Boulder, CO 80305

Property Summary

Property Type	Single Family Home
Details	4 bd · 2.25 ba · 1,940 sqft · built 1959
Lot Size	0.169 acres (7,350 sqft)
Owner	2 Individual Names on Record
Last Sale	$415,000 (Mar 2012)
Tax Bill	$5,386 (2025)
Deeds & Mortgages	Feb 2021 Mortgage Aug 2019 Mortgage + 2 more
Flood Zone	Zone X (minimal risk)
APN	`1577-08-1-04-012`

Property Details

APN / Parcel Number

Primary APN	`1577-08-1-04-012`
Alternative APNs	`R0013166` `0013166`

Interior

Bedrooms	4 Beds
Full Baths	2.25 Baths
Half Baths	2 Half Baths
Total Rooms	9 Rooms
Stories	1 Story
Building Area	1,940 sqft Living Area
Gross Area	2,080 sqft
1st Floor Area	1,040 sqft
Basement Area	1,040 sqft
Finished Basement	900 sqft
Unfinished Basement	140 sqft
Interior Walls	Wallboard/Drywall

Exterior

Year Built	Built 1959
Effective Year Built	Effective 1987
Architectural Style	Ranch
Exterior Material	Brick Veneer
Construction Type	Masonry / Concrete Block
Lot Area	7,350 sqft (0.169 acres)
Garage Type	Carport
Garage Area	348 sqft
Carport	Carport
Carport Area	348 sqft
Parking Spaces	1 Parking Space
Patio Area	450 sqft

Utilities, Heating & Cooling

Heating System	Forced Air with A/C

Location & Zoning

Account Number	R0013166
Street Address	660 S 43RD ST
City	BOULDER
State	CO
Zip	80305-6012
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	LOT 12 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	12
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	2 Individual Names on Record
Mailing Address	660 S 43RD ST, BOULDER, CO 80305-6012
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Date	Document
Feb 25, 2021	Deed of Trust, Mortgage · Conventional Mortgage WYNDHAM CAPITAL MORTGAGE INC
Aug 12, 2019	Deed of Trust, Mortgage · Conventional Mortgage GUILD MORTGAGE CO
Jul 27, 2020	Deed of Trust, Mortgage · Conventional Mortgage WYNDHAM CAPITAL MORTGAGE INC
Nov 4, 2019	Deed of Trust, Mortgage · Conventional Mortgage QUICKEN LNS

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Mar 2, 2012 · Amount on Record
Deed Sale	Mar 2, 2012 · Amount on Record
Prior Sale	Nov 3, 1997 · Amount on Record
Deed Document Number	20123206852
Prior Transfer Date	Nov 12, 2002
Prior Transfer Doc	0002361823
Record Updated	Oct 29, 2026

February 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BOULDER CO
Property Address	660 S 43RD ST, BOULDER, CO 80305-6012
Transaction Type	Mortgage
Record Updated	Mar 5, 2021

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0003862406
Date	Feb 25, 2021
Instrument	3862406

Lender

Name	WYNDHAM CAPITAL MORTGAGE INC
Type	Mortgage Company
Address	CHARLOTTE, NC 28211

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Mar 1, 2051

Interest

Index	6-Month T-Bill

August 2019: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BOULDER CO
Property Address	660 S 43RD ST, BOULDER, CO 80305-6012
Transaction Type	Mortgage
Record Updated	Feb 5, 2021

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0003729490
Date	Aug 12, 2019
Instrument	3729490

Lender

Name	GUILD MORTGAGE CO
Type	Mortgage Company
Address	SAN DIEGO, CA 92111

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Sep 1, 2049

July 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BOULDER CO
Property Address	660 S 43RD ST, BOULDER, CO 80305-6012
Transaction Type	Mortgage
Record Updated	Feb 5, 2021

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0003801196
Date	Jul 27, 2020
Instrument	3801196

Lender

Name	WYNDHAM CAPITAL MORTGAGE INC
Type	Mortgage Company
Address	CHARLOTTE, NC 28211

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Aug 1, 2050

November 2019: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BOULDER CO
Property Address	660 S 43RD ST, BOULDER, CO 80305-6012
Document Number	0003748183
Instrument Date	Nov 4, 2019
Transaction Type	Mortgage
Record Updated	Nov 22, 2019
Title Company	COLORADO ESCROW AND TITLE, COLORADO ESCROW & TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	660 S 43RD ST BOULDER CO 803056012, BOULDER, CO 80305-6012

Mortgage

Document Number	0003748183
Date	Nov 12, 2019
Instrument	3748183

Lender

Name	QUICKEN LNS
Type	Funding / Finance Company
Address	DETROIT, MI 48226-1906

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	360 Months
Due	Nov 11, 2049

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		$56,698 (+0.37%) Land $28,029 Building $28,669	$903,800 (-) Land $482,200 Building $421,600
2025	$5,386.00 (+2.61%)	$56,488 (-12.38%) Land $30,138 Building $26,350	$903,800 (-6.07%) Land $482,200 Building $421,600
2023	$5,249.00 (+14.53%)	$64,467 (+30.61%) Land $35,617 Building $28,850	$962,200 (+35.48%) Land $531,600 Building $430,600
2022	$4,583.00	$49,359 Land $26,514 Building $22,845	$710,200 Land $381,500 Building $328,700

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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