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

Boulder County property record for 750 S 43rd St, Boulder, CO 80305

Property Summary

Property Type	Single Family Home
Details	2 bd · 4 ba · 1,976 sqft · built 1960
Lot Size	0.161 acres (7,017 sqft)
Owner	2 Individual Names on Record
Last Sale	$1,200,000 (Apr 2022)
Tax Bill	$5,742 (2025)
Deeds & Mortgages	Apr 2022 Sale & Mortgage Jul 2019 Sale + 2 more
Flood Zone	Zone X (minimal risk)
APN	`1577-08-1-04-017`

Property Details

APN / Parcel Number

Primary APN	`1577-08-1-04-017`
Alternative APNs	`R0013121` `0013121`

Interior

Bedrooms	2 Beds
Full Baths	4 Baths
Half Baths	2 Half Baths
Total Rooms	5 Rooms
Stories	1 Story
Building Area	1,976 sqft Living Area
Gross Area	2,356 sqft
1st Floor Area	1,040 sqft
Basement Area	1,040 sqft
Finished Basement	936 sqft
Unfinished Basement	104 sqft
Interior Walls	Wallboard/Drywall

Exterior

Year Built	Built 1960
Effective Year Built	Effective 2001
Architectural Style	Ranch
Exterior Material	Brick Veneer
Construction Type	Masonry / Concrete Block
Roof Material	Asphalt
Lot Area	7,017 sqft (0.161 acres)
Garage Type	Attached
Garage Area	276 sqft
Parking Spaces	1 Parking Space
Porch	Porch
Porch Area	120 sqft
Patio Area	340 sqft

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Forced Air with A/C

Location & Zoning

Account Number	R0013121
Street Address	750 S 43RD ST
City	BOULDER
State	CO
Zip	80305-6014
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	LOT 17 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	17
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	750 S 43RD ST, BOULDER, CO 80305-6014
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Date	Document
Apr 19, 2022	Special Warranty Deed, Transfer · Conventional Mortgage ROCKET MORTGAGE LLC
Jul 3, 2019	Warranty Deed, Transfer OTHER
Apr 5, 2019	Quit Claim Deed, Transfer NOT AVAILABLE
Nov 6, 2017	Deed of Trust, Mortgage · Line of Credit ELEVATIONS CU

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Apr 19, 2022 · Amount on Record
Deed Sale	Apr 19, 2022 · Amount on Record
Prior Sale	Jul 3, 2019 · Amount on Record
Deed Document Number	20223957458
Prior Transfer Date	May 15, 1995
Prior Transfer Doc	0001523916
Record Updated	Oct 29, 2026

April 2022: Special Warranty Deed, Transfer

Document Type	Special Warranty Deed
Jurisdiction	BOULDER CO
Recording Date	Apr 19, 2022
Property Address	750 S 43RD ST, BOULDER, CO 80305-6014
Document Number	0003957458
Instrument Date	Apr 15, 2022
Instrument	3957458
Transaction Type	Transfer
Record Updated	May 3, 2022
Title Company	LAND TITLE GUARANTEE CO

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$120.00
Amount Accuracy	Full Amount Stated
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name
Address	750 S 43RD ST, 750, BOULDER, CO 80305-6014

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	750 S 43RD ST, BOULDER, CO 80305-6014

Mortgage

Document Number	0003957459
Date	Apr 19, 2022
Instrument	3957459

Lender

Name	ROCKET MORTGAGE LLC
Type	Mortgage Company

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	May 1, 2052

Mortgage

Document Number	0003957460
Date	Apr 19, 2022
Instrument	3957460

Lender

Name	RED ROCKS CU
Type	Credit Union
Address	LITTLETON, CO 80120

Agreement

Type	Stand-Alone First Mortgage
Amount	Amount Recorded
Term	84 Months
Due	Apr 15, 2029

July 2019: Warranty Deed, Transfer

Document Type	Warranty Deed
Jurisdiction	BOULDER CO
Recording Date	Jul 3, 2019
Property Address	750 S 43RD ST, BOULDER, CO 80305-6014
Document Number	0003722065
Instrument Date	Jun 27, 2019
Instrument	3722065
Transaction Type	Transfer
Record Updated	Jul 16, 2019
Title Company	OTHER

Transaction

Amount	Amount Recorded
Tax	$77.00
Amount Accuracy	Confirmed
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	750 S 43RD ST BOULDER CO 803056014, BOULDER, CO 80305-6014

April 2019: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	BOULDER CO
Recording Date	Apr 5, 2019
Property Address	750 S 43RD ST, BOULDER, CO 80305-6014
Document Number	0003705860
Instrument Date	Apr 4, 2019
Instrument	3705860
Transaction Type	Transfer
Record Updated	Apr 11, 2019
Title Company	NOT AVAILABLE

Transaction

Tax	$0.00
Additional	Quitclaim Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	2318 SCR #9 LOVELAND CO 80537, 9, LOVELAND, CO 80537

November 2017: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BOULDER CO
Property Address	750 S 43RD ST, BOULDER, CO 80305-6014
Document Number	0003625093
Instrument Date	Nov 6, 2017
Transaction Type	Mortgage
Record Updated	Nov 20, 2017

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	750 S 43RD ST BOULDER CO 803056014, BOULDER, CO 80305-6014

Mortgage

Document Number	0003625093
Date	Nov 13, 2017
Instrument	3625093

Lender

Name	ELEVATIONS CU
Address	BOULDER, CO 80301

Agreement

Type	Line of Credit
Amount	Amount Recorded
Term	240 Months
Due	Nov 12, 2037

Interest

Rate Type	Adjustable Rate

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		$60,765 (+0.9%) Land $27,282 Building $33,483	$963,600 (-) Land $471,200 Building $492,400
2025	$5,742.00 (+2.65%)	$60,225 (-12.03%) Land $29,450 Building $30,775	$963,600 (-5.7%) Land $471,200 Building $492,400
2023	$5,594.00 (+11.99%)	$68,461 (+27.27%) Land $34,800 Building $33,661	$1,021,800 (+32.02%) Land $519,400 Building $502,400
2022	$4,995.00	$53,793 Land $25,910 Building $27,883	$774,000 Land $372,800 Building $401,200

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	Moderate above 45% of the US · lower than 72% of Colorado
Wildfire Likelihood	0.09% 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 604 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	2,000 / 1,000
Xfinity Cable	2,000 / 250
Verizon Fixed Wireless	300 / 20
LiveWireNet Fixed Wireless	250 / 100

May also be available: AT&T, T-Mobile.

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