9421 High St, Thornton (Denver), CO 80229 Property Records

Adams County property record for 9421 High St, Thornton, CO 80229

Property Summary

Property Type	Single Family Home
Details	3 bd · 1 ba · 1,002 sqft · built 1955
Lot Size	0.168 acres (7,300 sqft)
Owner	2 Individual Names on File
Last Sale	$156,500 (Jul 2014)
Tax Bill	$925 (2025)
Deeds & Mortgages	Apr 2021 Line of Credit Apr 2017 Mortgage + 1 more
Flood Zone	Zone X (minimal risk)
APN	`1719-23-1-09-013`

Property Details

APN / Parcel Number

Primary APN	`1719-23-1-09-013`
Alternative APNs	`0171923109013` `R0051683`

Interior

Bedrooms	3 Beds
Full Baths	1 Bath
Plumbing Fixtures	6 Plumbing Fixtures
Total Rooms	5 Rooms
Stories	1 Story
Building Area	1,002 sqft Living Area
1st Floor Area	1,002 sqft
Interior Walls	Wallboard/Drywall

Exterior

Year Built	Built 1955
Effective Year Built	Effective 1955
Architectural Style	Ranch
Exterior Material	Aluminum/Vinyl
Construction Type	Frame
Roof Type	Gable/Hip
Roof Material	Composition Shingle
Lot Area	7,300 sqft (0.168 acres)
Lot Dimensions	100 ft deep x 73 ft wide

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Forced Air with A/C

Location & Zoning

Account Number	R0051683
Street Address	9421 HIGH ST
City	THORNTON
State	CO
Zip	80229-7626
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	SUB:THORNTON BLK:91D LOT:13
Legal Range	68W
Legal Township	02S
Legal Section	23
Legal Quarter	1
Legal Subdivision	THORNTON
Legal Block	91D
Legal Lot Number	13
Jurisdiction	ADAMS CO
Township / Civil Division	WEST ADAMS
Census Block Group	1
Census Block	1012
Census Tract	9202

Owner

9421 High St is owned and occupied by two individuals who bought it in July 2014.

Source: Adams County records, as of January 21, 2026

Owner of Record	2 Individual Names on File
Mailing Address	9421 HIGH ST, THORNTON, CO 80229-7626
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
Apr 22, 2021	Deed of Trust, Mortgage · Line of Credit ELEVATIONS CU
Apr 19, 2017	Deed of Trust, Mortgage · Conventional Mortgage ELEVATIONS CU
Dec 29, 2020	Intrafamily Transfer, Transfer · Conventional Mortgage ELEVATIONS CU

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Jul 2, 2014 · Amount on File
Deed Sale	Jul 2, 2014 · Amount on File
Prior Sale	Oct 16, 2009 · Amount on File
Deed Document Number	201442280
Transfer Doc	4156000021
Record Updated	Oct 29, 2026

April 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	ADAMS CO
Property Address	9421 HIGH ST, THORNTON, CO 80229-7626
Transaction Type	Mortgage
Record Updated	Apr 28, 2021

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000049220
Date	Apr 22, 2021
Instrument	2021000049220

Lender

Name	ELEVATIONS CU
Type	Credit Union
Address	BOULDER, CO 80301

Agreement

Type	Line of Credit
Amount	Amount on Record
Term	240 Months
Due	Apr 21, 2041

Interest

Rate Type	Adjustable Rate
Change Frequency	Monthly

April 2017: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	ADAMS CO
Property Address	9421 HIGH ST, THORNTON, CO 80229-7626
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	0000033981
Date	Apr 19, 2017
Instrument	2017000033981

Lender

Name	ELEVATIONS CU
Type	Credit Union
Address	BOULDER, CO 80301

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	361 Months
Due	May 1, 2047

December 2020: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	ADAMS CO
Recording Date	Dec 29, 2020
Property Address	9421 HIGH ST, THORNTON, CO 80229-7626
Document Number	0000136401
Instrument Date	Dec 18, 2020
Instrument	2020000136401
Transaction Type	Transfer
Record Updated	Jan 27, 2022
Title Company	CHICAGO TITLE

Transaction

Tax	$0.00
Amount Accuracy	No Consideration Stated
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants
Address	9421 HIGH ST, THORNTON, CO 80229-7626

Mortgage

Document Number	0000136402
Date	Dec 29, 2020
Instrument	2020000136402

Lender

Name	ELEVATIONS CU
Type	Credit Union

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	181 Months
Due	Jan 1, 2036

Tax Assessment & Valuation

The 2025 property tax bill for 9421 High St was $925, down 53% from the year before.

Source: Adams County assessment roll, as of January 21, 2026

Property Jurisdictions

Type	Name
State	Colorado
County	Adams County
Municipality	Thornton City
Unified School District	Mapleton School District 1 (PK - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value	Assessed Market Value
2025	$925.00 (-52.97%)	$23,730 Land $6,120 Building $17,610	$349,000 Land $90,000 Building $259,000
2024	$1,967.00 (-19.09%)
2023	$2,431.00 (-2.33%)	$24,630 (-1.36%) Land $6,090 Building $18,540	$364,000 (+1.3%) Land $90,000 Building $274,000
2022	$2,489.00	$24,970 Land $10,560 Building $14,410	$359,330 Land $152,000 Building $207,330

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 9421 High St in Zone X, an area of minimal flood risk.

Source: FEMA National Flood Hazard Layer, effective October 2, 2026

FEMA Flood Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it

Values are read at the parcel center point; lenders make the official flood determination.

Wildfire

The area around 9421 High St has no burnable land within ember reach, so its wildfire risk is not rated.

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

Wildfire Risk	Not rated no burnable land 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 THORNTON serves 226,465 people · EPA ID CO0101150
Water Source	Surface water
Last State Inspection	Jul 2024
Lead	2 ppb (2025) action level 15 ppb

Violations Reported to EPA

Water Quality	None last 10 years
Treatment and Procedure	None last 10 years
Monitoring and Reporting	3 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 894 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
CenturyLink Fiber · DSL in parts of the area	2,000 / 1,000
Xfinity Cable	2,000 / 250
Verizon Fixed Wireless	300 / 20

May also be available: Aerux Broadband, LiveWireNet, T-Mobile.

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