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

Boulder County property record for 470 S 40th St, Boulder, CO 80305

Property Summary

Property Type	Single Family Home
Details	6 bd · 2.5 ba · 2,800 sqft · built 1956
Lot Size	0.158 acres (6,885 sqft)
Owner	2 Individual Names on File
Last Sale	$210,000 (Jul 1999)
Tax Bill	$4,731 (2025)
Deeds & Mortgages	Mar 2020 Mortgage Oct 2019 Mortgage + 1 more
Flood Zone	Zone X (minimal risk)
APN	`1577-05-4-23-020`

Property Details

APN / Parcel Number

Primary APN	`1577-05-4-23-020`
Alternative APNs	`R0010377` `0010377`

Interior

Bedrooms	6 Beds
Full Baths	2.5 Baths
Half Baths	2 Half Baths
Total Rooms	8 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 1975
Architectural Style	Ranch
Exterior Material	Brick Veneer
Construction Type	Masonry / Concrete Block
Roof Material	Asphalt
Lot Area	6,885 sqft (0.158 acres)
Garage Type	Carport
Garage Area	312 sqft
Carport	Carport
Carport Area	312 sqft
Parking Spaces	1 Parking Space
Patio Area	420 sqft

Utilities, Heating & Cooling

Cooling System	Evaporative
Heating System	Forced Air with A/C

Location & Zoning

Account Number	R0010377
Street Address	470 S 40TH ST
City	BOULDER
State	CO
Zip	80305-5420
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	LOT 20 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	20
Jurisdiction	BOULDER CO
Township / Civil Division	BOULDER
Census Block Group	3
Census Block	3007
Census Tract	12507

Owner

470 S 40th St is owned and occupied by two individuals who acquired it in June 2018.

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

Owner of Record	2 Individual Names on File
Mailing Address	470 S 40TH ST, BOULDER, CO 80305-5420
Occupancy	Owner Occupied
Owner Type	Individual

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 30, 2020	Deed of Trust, Mortgage · Conventional Mortgage CALIBER HM LOANS
Oct 4, 2019	Deed of Trust, Mortgage · Conventional Mortgage CALIBER HM LOANS
Jul 3, 2018	Intrafamily Transfer, Transfer · Conventional Mortgage HOME POINT FINANCIAL CORPORATION

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Jul 30, 1999 · Amount on File
Deed Sale	Jul 30, 1999 · Amount on File
Prior Sale	Sep 3, 1997 · Amount on File
Deed Document Number	19991966107
Last Transfer Date	Jun 14, 2018
Transfer Doc	0003664119
Record Updated	Oct 29, 2026

March 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BOULDER CO
Property Address	470 S 40TH ST, BOULDER, CO 80305-5420
Document Number	0003785226
Instrument Date	Mar 30, 2020
Transaction Type	Mortgage
Record Updated	Jul 10, 2020
Title Company	ASCENDANT TITLE INC

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	470 S 40TH ST BOULDER CO 803055420, BOULDER, CO 80305-5420

Mortgage

Document Number	0003785226
Date	May 20, 2020
Instrument	3785226

Lender

Name	CALIBER HM LOANS
Type	Funding / Finance Company
Address	COPPELL, TX 75019

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	360 Months
Due	May 19, 2050

October 2019: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BOULDER CO
Property Address	470 S 40TH ST, BOULDER, CO 80305-5420
Document Number	0003741573
Instrument Date	Oct 4, 2019
Transaction Type	Mortgage
Record Updated	Oct 18, 2019
Title Company	FIRST AMERICAN TITLE, FIRST AMERICAN MTG SOLUTIONS

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	470 S 40TH ST BOULDER CO 803055420, BOULDER, CO 80305-5420

Mortgage

Document Number	0003741573
Date	Oct 9, 2019
Instrument	3741573

Lender

Name	CALIBER HM LOANS
Type	Funding / Finance Company
Address	COPPELL, TX 75019

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	360 Months
Due	Oct 8, 2049

July 2018: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	BOULDER CO
Recording Date	Jul 3, 2018
Property Address	470 S 40TH ST, BOULDER, CO 80305-5420
Document Number	0003664119
Instrument Date	Jun 14, 2018
Instrument	3664119
Transaction Type	Transfer
Record Updated	Mar 31, 2022

Transaction

Tax	$0.00
Amount Accuracy	No Consideration Stated
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name
Address	00000

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	470 S 40TH ST, BOULDER, CO 80305-5420

Mortgage

Document Number	0003664120
Date	Jul 3, 2018
Instrument	3664120

Lender

Name	HOME POINT FINANCIAL CORPORATION
Type	Government Agency

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	360 Months
Due	Jul 1, 2048

Tax Assessment & Valuation

The 2025 property tax bill for 470 S 40th St was $4,731.

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		$49,232 (-0.79%) Land $27,975 Building $21,257	$794,000 (-) Land $481,400 Building $312,600
2025	$4,731.00	$49,626 Land $30,088 Building $19,538	$794,000 Land $481,400 Building $312,600
2023	$5,677.00 (+10.32%)	$57,553 (+28.13%) Land $35,463 Building $22,090	$859,000 (+32.91%) Land $529,300 Building $329,700
2022	$5,146.00	$44,918 Land $26,410 Building $18,508	$646,300 Land $380,000 Building $266,300

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 470 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 470 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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