4551 E 121st Pl, Thornton, CO 80241 Property Records

Adams County property record for 4551 E 121st Pl, Thornton, CO 80241 · Last verified April 2026

Property Summary

Property Type	Single Family Home
Details	3 bd · 2.5 ba · 1,695 sqft · built 1980
Lot Size	0.206 acres (8,991 sqft)
Owner	Company Name on File
Last Sale	$163,200 (Apr 2008)
Tax Bill	$1,012 (2025)
Deeds & Mortgages	Mar 2026 Transfer Dec 2020 Mortgage
Flood Zone	Zone X (minimal risk)
APN	`1571-31-3-18-006`

Property Details

APN / Parcel Number

Primary APN	`1571-31-3-18-006`
Alternative APNs	`0157131318006` `R0011683`

Interior

Bedrooms	3 Beds
Full Baths	2.5 Baths
Half Baths	1 Half Bath
Plumbing Fixtures	11 Plumbing Fixtures
Total Rooms	6 Rooms
Stories	2 Stories
Building Area	1,695 sqft Living Area
Gross Area	2,712 sqft
1st Floor Area	1,019 sqft
2nd Floor Area	676 sqft
Basement Area	576 sqft
Interior Walls	Wallboard/Drywall

Exterior

Year Built	Built 1980
Effective Year Built	Effective 1980
Architectural Style	Split Level
Exterior Material	Aluminum/Vinyl
Construction Type	Frame
Roof Type	Gable
Roof Material	Composition Shingle
Lot Area	8,991 sqft (0.206 acres)
Lot Dimensions	111 ft deep x 81 ft wide
Garage Type	Attached
Garage Area	441 sqft
Parking Spaces	2 Parking Spaces
Porch	Open Slab
Porch Area	696 sqft

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Forced Air with A/C

Location & Zoning

Account Number	R0011683
Street Address	4551 E 121ST PL
City	THORNTON
State	CO
Zip	80241-3631
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	SUB:NORTHAVEN BLK:5 LOT:1
Legal Range	67W
Legal Township	01S
Legal Section	31
Legal Quarter	3
Legal Subdivision	NORTHAVEN
Legal Block	5
Legal Lot Number	1
Jurisdiction	ADAMS CO
Township / Civil Division	WEST ADAMS
Census Block Group	2
Census Block	2005
Census Tract	8547

Owner

Source: Adams County records · APN 1571-31-3-18-006

Assessment roll updated January 21, 2026 · Last verified April 2026

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of Record	Company Name on File
Mailing Address	4551 E 121ST PL, THORNTON, CO 80241-3631
Occupancy	Owner Occupied
Owner Type	Company
Vesting	Trust

Deeds, Mortgages & Sale History

Date	Document
Mar 16, 2026	Intrafamily Transfer, Transfer
Dec 02, 2020	Intrafamily Transfer, Transfer · Conventional Mortgage UNITED WHOLESALE MORTGAGE

Assessor's Deed Record

Deed Names	Verified Name on Deed
Last Sale	Apr 23, 2008 · Amount on Record
Deed Sale	Apr 23, 2008 · Amount on Record
Prior Sale	Feb 20, 2008
Deed Document Number	200832147
Last Transfer Date	Mar 13, 2026
Transfer Doc	0000013861
Record Updated	Jun 08, 2026

March 2026: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	ADAMS CO
Recording Date	Mar 16, 2026
Property Address	4551 E 121ST PL, THORNTON, CO 80241-3631
Document Number	0000013861
Instrument Date	Mar 13, 2026
Instrument	2026000013861
Transaction Type	Transfer
Record Updated	Mar 25, 2026

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
Address	4551 E 121ST PL, THORNTON, CO 80241-3631

December 2020: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	ADAMS CO
Recording Date	Dec 02, 2020
Property Address	4551 E 121ST PL, THORNTON, CO 80241-3631
Document Number	0000125037
Instrument Date	Nov 23, 2020
Instrument	2020000125037
Transaction Type	Transfer
Record Updated	Jan 27, 2022

Transaction

Tax	$0.00
Amount Accuracy	Transfer Tax Exempt
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants
Address	4551 E 121ST PL, THORNTON, CO 80241-3631

Mortgage

Document Number	0000125038
Date	Dec 02, 2020
Instrument	2020000125038

Lender

Name	UNITED WHOLESALE MORTGAGE
Type	Mortgage Company

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	240 Months
Due	Dec 01, 2040

Tax Assessment & Valuation

Source: Adams County records · Assessment roll updated January 21, 2026 · Last verified April 2026

Property Jurisdictions

Type	Name
State	Colorado
County	Adams County
Municipality	Thornton City
Unified School District	Adams 12 Five Star Schools (PK - 12)

Tax Bill & Assessment History

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.

Year	Tax Bill	Assessed Value	Assessed Market Value
2025	$1,012.00 (-62.55%)	$32,780 (-10.44%) Land $6,530 Building $26,250	$482,000 (-10.91%) Land $96,000 Building $386,000
2024	$2,702.00 (-32.33%)
2023	$3,993.00 (+14.68%)	$36,600 (+15.79%) Land $5,820 Building $30,780	$541,000 (+18.97%) Land $86,000 Building $455,000
2022	$3,482.00	$31,610 Land $11,960 Building $19,650	$454,752 Land $172,000 Building $282,752

Flood & Wildfire

Source: FEMA National Flood Hazard Layer, Adams County (08001C), updated October 2, 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026

Flood

FEMA Flood Zone	Zone X
Special Flood Hazard Area	No
Flood Hazard	Minimal
500-Year Floodplain	No

Wildfire

Wildfire Risk	Not rated no burnable land in reach
Wildfire Likelihood	Negligible
Exposure	None beyond ember reach

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

Internet Providers

Source: FCC Broadband Data Collection, availability as of December 31, 2025 · Published October 2026 · based on 820 locations within about half a mile of this property

Provider	Technology	Download / Upload (Mbps)
Lumen Technologies	Fiber	8,000 / 8,000
Xfinity	Cable	2,000 / 250
JAB Wireless	Fixed Wireless (unlicensed)	300 / 60
Verizon	Fixed Wireless	300 / 20

May also be available at this address: T-Mobile USA, Ting Fiber, BIF IV Intrepid HoldCo, AT&T, Lumen Technologies. Availability varies by address; speeds are provider-advertised maximums, not measured.

Mobile Coverage

5G and 4G LTE

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