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

Boulder County property record for 610 S 43rd St, Boulder, CO 80305

Property Summary

Property Type	Single Family Home
Details	4 bd · 2.25 ba · 2,106 sqft · built 1959
Lot Size	0.165 acres (7,185 sqft)
Owner	2 Individual Names on File
Last Sale	$374,000 (Aug 2011)
Tax Bill	$5,105 (2025)
Deeds & Mortgages	Mar 2024 Second Mortgage May 2017 Mortgage + 1 more
Flood Zone	Zone X (minimal risk)
APN	`1577-08-1-04-007`

Property Details

APN / Parcel Number

Primary APN	`1577-08-1-04-007`
Alternative APNs	`R0011898` `0011898`

Interior

Bedrooms	4 Beds
Full Baths	2.25 Baths
Half Baths	2 Half Baths
Total Rooms	7 Rooms
Stories	1 Story
Building Area	2,106 sqft Living Area
Gross Area	2,382 sqft
1st Floor Area	1,040 sqft
Basement Area	1,066 sqft
Finished Basement	1,066 sqft
Interior Walls	Wallboard/Drywall

Exterior

Year Built	Built 1959
Effective Year Built	Effective 1978
Architectural Style	Ranch
Exterior Material	Brick Veneer
Construction Type	Masonry / Concrete Block
Roof Material	Asphalt
Lot Area	7,185 sqft (0.165 acres)
Garage Type	Attached
Garage Area	276 sqft
Parking Spaces	1 Parking Space

Utilities, Heating & Cooling

Heating System	Forced Air with A/C

Location & Zoning

Account Number	R0011898
Street Address	610 S 43RD ST
City	BOULDER
State	CO
Zip	80305-6012
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	LOT 7 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	7
Jurisdiction	BOULDER CO
Township / Civil Division	BOULDER
Census Block Group	3
Census Block	3002
Census Tract	12508

Owner

610 S 43rd St is owned and occupied by two individuals who bought it in August 2011.

Source: Boulder County records, as of September 18, 2026

Owner of Record	2 Individual Names on File
Mailing Address	610 S 43RD ST, BOULDER, CO 80305-6012
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Joint Tenants

Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.

Deeds, Mortgages & Sale History

Date	Document
Mar 4, 2024	Deed of Trust, Mortgage · Stand-Alone Second Mortgage DISCOVER BANK
May 2, 2017	Deed of Trust, Mortgage · Conventional Mortgage JPMORGAN CHASE BANK NA
Jan 29, 2020	Deed of Trust, Mortgage · Conventional Mortgage JPMORGAN CHASE BANK NA

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Aug 24, 2011 · Amount on File
Deed Sale	Aug 24, 2011 · Amount on File
Prior Sale	Nov 14, 1995 · Amount on File
Deed Document Number	20113166943
Record Updated	Oct 29, 2026

March 2024: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BOULDER CO
Property Address	610 S 43RD ST, BOULDER, CO 80305-6012
Transaction Type	Mortgage
Record Updated	Apr 2, 2024

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0004038423
Date	Mar 4, 2024
Instrument	4038423

Lender

Name	DISCOVER BANK
Type	Bank
Address	BOULDER, CO 80305

Agreement

Type	Stand-Alone Second Mortgage
Amount	Amount on Record
Term	180 Months
Due	Mar 4, 2039

May 2017: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BOULDER CO
Property Address	610 S 43RD ST, BOULDER, CO 80305-6012
Transaction Type	Mortgage
Record Updated	Feb 5, 2021
Title Company	SERVICE LINK

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0003589763
Date	May 2, 2017
Instrument	3589763

Lender

Name	JPMORGAN CHASE BANK NA
Type	Bank
Address	COLUMBUS, OH 43240

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	360 Months
Due	May 1, 2047

January 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BOULDER CO
Property Address	610 S 43RD ST, BOULDER, CO 80305-6012
Transaction Type	Mortgage
Record Updated	Feb 5, 2021
Title Company	LAND TITLE GUARANTEE

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0003763069
Date	Jan 29, 2020
Instrument	3763069

Lender

Name	JPMORGAN CHASE BANK NA
Type	Bank
Address	COLUMBUS, OH 43240

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	241 Months
Due	Feb 1, 2040

Tax Assessment & Valuation

The 2025 property tax bill for 610 S 43rd St was $5,105.

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		$53,502 (-0.09%) Land $27,662 Building $25,840	$856,800 (-) Land $476,800 Building $380,000
2025	$5,105.00	$53,550 Land $29,800 Building $23,750	$856,800 Land $476,800 Building $380,000
2023	$5,004.00 (+13.7%)	$61,640 (+30.04%) Land $35,215 Building $26,425	$920,000 (+34.9%) Land $525,600 Building $394,400
2022	$4,401.00	$47,399 Land $26,215 Building $21,184	$682,000 Land $377,200 Building $304,800

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

FEMA maps place 610 S 43rd St in Zone X, an area of minimal flood risk.

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

Wildfire risk around 610 S 43rd St is low, with a 0.04% annual chance of 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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