430 S 40th St, Boulder, CO 80305 Property Records

Boulder County property record for 430 S 40th St, Boulder, CO 80305

Property Summary

Property Type	Single Family Home
Details	4 bd · 3 ba · 2,800 sqft · built 1956
Lot Size	0.163 acres (7,108 sqft)
Owner	2 Individual Names on File
Last Sale	$869,000 (Feb 2020)
Tax Bill	$6,365 (2025)
Deeds & Mortgages	Sep 2021 Mortgage Jun 2019 Mortgage + 3 more
Flood Zone	Zone X (minimal risk)
APN	`1577-05-4-23-016`

Property Details

APN / Parcel Number

Primary APN	`1577-05-4-23-016`
Alternative APNs	`R0012340` `0012340`

Interior

Bedrooms	4 Beds
Full Baths	3 Baths
Total Rooms	9 Rooms
Stories	1 Story
Building Area	2,800 sqft Living Area
1st Floor Area	1,400 sqft
Basement Area	1,400 sqft
Finished Basement	1,400 sqft
Interior Walls	Wallboard/Drywall

Exterior

Year Built	Built 1956
Effective Year Built	Effective 2000
Architectural Style	Ranch
Exterior Material	Brick Veneer
Construction Type	Frame
Roof Material	Asphalt
Lot Area	7,108 sqft (0.163 acres)
Garage Type	Carport
Garage Area	288 sqft
Carport	Carport
Carport Area	288 sqft
Parking Spaces	1 Parking Space
Porch	Porch
Porch Area	168 sqft
Patio Area	120 sqft

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Forced Air with A/C

Location & Zoning

Account Number	R0012340
Street Address	430 S 40TH ST
City	BOULDER
State	CO
Zip	80305-5420
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	LOT 16 BLK 6 MARTIN ACRES 2
Legal Range	70
Legal Township	1S
Legal Section	05
Legal Subdivision	MARTIN ACRES 2 - BO
Legal Block	6
Legal Lot Number	16
Jurisdiction	BOULDER CO
Township / Civil Division	BOULDER
Census Block Group	3
Census Block	3007
Census Tract	12507

Owner

430 S 40th St is owned and occupied by two individuals who bought it in February 2020.

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

Owner of Record	2 Individual Names on File
Mailing Address	430 S 40TH ST, BOULDER, CO 80305-5420
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
Sep 27, 2021	Deed of Trust, Mortgage · Conventional Mortgage COMMERCE BANK
Jun 18, 2019	Deed of Trust, Mortgage · Conventional Mortgage UNIVERSAL LENDING CORP
Feb 10, 2020	Warranty Deed, Transfer · Conventional Mortgage CHERRY CREEK MORTGAGE CO INC
Sep 24, 2018	Deed of Trust, Mortgage UNIVERSAL LENDING
Feb 9, 2018	Warranty Deed, Transfer · ARM ANGEL OAK MORTGAGE SOLUTIONS LLC

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Feb 10, 2020 · Amount on File
Deed Sale	Feb 10, 2020 · Amount on File
Prior Sale	Feb 9, 2018 · Amount on File
Deed Document Number	20203765312
Prior Transfer Date	Jul 17, 2010
Prior Transfer Doc	0003088216
Record Updated	Oct 29, 2026

September 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BOULDER CO
Property Address	430 S 40TH ST, BOULDER, CO 80305-5420
Transaction Type	Mortgage
Record Updated	Feb 27, 2024
Title Company	SERVICELINK

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	430 S 40TH ST, BOULDER, CO 80305-5420

Mortgage

Document Number	0003916386
Date	Sep 27, 2021
Instrument	3916386

Lender

Name	COMMERCE BANK
Type	Bank
Address	KANSAS CITY, MO 64106

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	353 Months
Due	Feb 1, 2051

June 2019: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BOULDER CO
Property Address	430 S 40TH ST, BOULDER, CO 80305-5420
Transaction Type	Mortgage
Record Updated	Feb 5, 2021
Title Company	FIRST AMERICAN TITLE INS CO

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0003718941
Date	Jun 18, 2019
Instrument	3718941

Lender

Name	UNIVERSAL LENDING CORP
Type	Lending Institution
Address	DENVER, CO 80224

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	361 Months
Due	Jul 1, 2049

February 2020: Warranty Deed, Transfer

Document Type	Warranty Deed
Jurisdiction	BOULDER CO
Recording Date	Feb 10, 2020
Property Address	430 S 40TH ST, BOULDER, CO 80305-5420
Document Number	0003765312
Map Reference	MB 6 PG 41
Instrument Date	Feb 7, 2020
Instrument	3765312
Transaction Type	Transfer
Record Updated	Mar 31, 2022
Title Company	HERITAGE TITLE COMPANY

Transaction

Amount	Amount on Record
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$86.90
Amount Accuracy	Full Amount Stated
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants
Address	430 S 40TH ST, BOULDER, CO 80305-5420

Mortgage

Document Number	0003765313
Date	Feb 10, 2020
Instrument	3765313

Lender

Name	CHERRY CREEK MORTGAGE CO INC
Type	Mortgage Company

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	361 Months
Due	Mar 1, 2050

September 2018: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BOULDER CO
Property Address	430 S 40TH ST, BOULDER, CO 80305-5420
Document Number	0003679272
Instrument Date	Sep 24, 2018
Transaction Type	Mortgage
Record Updated	Jan 15, 2019
Title Company	FIRST AMERICAN TITLE, FIRST AMERICAN TITLE INSURANCE

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	430 S 40TH ST BOULDER CO 803055420, BOULDER, CO 80305-5420

Mortgage

Document Number	0003679272
Date	Oct 3, 2018
Instrument	3679272

Lender

Name	UNIVERSAL LENDING
Type	Funding / Finance Company
Address	DENVER, CO 80224

Agreement

Amount	Amount on Record
Term	360 Months
Due	Oct 2, 2048

February 2018: Warranty Deed, Transfer

Document Type	Warranty Deed
Jurisdiction	BOULDER CO
Recording Date	Feb 9, 2018
Property Address	430 S 40TH ST, BOULDER, CO 80305-5420
Document Number	0003640070
Map Reference	MB6 PG41
Instrument Date	Feb 6, 2018
Instrument	3640070
Transaction Type	Transfer
Record Updated	Mar 31, 2022
Title Company	HERITAGE TITLE CO

Transaction

Amount	Amount on Record
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$80.00
Amount Accuracy	Full Amount Stated
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name
Address	00000

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Tenants in Severalty
Address	430 S 40TH ST, BOULDER, CO 80305-5420

Mortgage

Document Number	0003640071
Date	Feb 9, 2018
Instrument	3640071

Lender

Name	ANGEL OAK MORTGAGE SOLUTIONS LLC
Type	Mortgage Company

Agreement

Type	ARM
Amount	Amount on Record
Term	361 Months
Due	Mar 1, 2048

Interest

Rate Type	Adjustable Rate
Rate	6.37%
Type Change Date	Mar 1, 2023
Change Frequency	Annually
Min Rate At Change	4.37%
Max Rate At Change	8.37%
Index	1-Year LIBOR
Margin	4
Max Rate	11.3%

Tax Assessment & Valuation

The 2025 property tax bill for 430 S 40th St was $6,365.

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		$67,871 (+1.67%) Land $33,062 Building $34,809	$1,068,100 (-) Land $556,200 Building $511,900
2025	$6,365.00	$66,757 Land $34,763 Building $31,994	$1,068,100 Land $556,200 Building $511,900
2023	$6,247.00 (+14.56%)	$76,025 (+29.45%) Land $40,736 Building $35,289	$1,134,700 (+34.28%) Land $608,000 Building $526,700
2022	$5,453.00	$58,728 Land $30,219 Building $28,509	$845,000 Land $434,800 Building $410,200

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

FEMA maps place 430 S 40th St in Zone X, an area of minimal flood risk, though there have been 7 flood claims nearby since 1979.

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	6 in force
Nearby Flood Claims	7 (1979–2022)
Claims Outside the SFHA	5 of 7
Most Recent Claim	Jul 2022 · rainfall accumulation
Claims by Event	Severe Storms, Flooding, Landslides, And Mudslides, Sep 2013 · 5 claims

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 430 S 40th St is low, with a 0.01% annual chance of wildfire.

Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024

Wildfire Risk	Low lower than 80% of the US · lower than 91% of Colorado
Wildfire Likelihood	0.01% annual chance
Exposure	None beyond 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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