4905 E 121st Ave, Thornton, CO 80241 Property Records

Adams County property record for 4905 E 121st Ave, Thornton, CO 80241 · Last verified February 2026

Property Highlights

Property Type	Residential > Single Family > Home
Bedrooms	3 Beds
Bathrooms	2 Baths
Year Built	Built 1985
Square Footage	1,381 sqft Living Area
Lot Size	9,583 sqft (0.219 acres)
Occupancy	Owner Occupied
Last Sale	$125,400 (1998)
Tax Bill	$937.00 (2025)

Property Details

APN / Parcel Number

Primary APN	`R0011939`
Alternative APNs	`0157131406009` `157131406009`

Interior

Bedrooms	3 Beds
Full Baths	2 Baths
Plumbing Fixtures	9 Plumbing Fixtures
Total Rooms	6 Rooms
Building Area	1,381 sqft Living Area
1st Floor	732 sqft 1st Floor
2nd Floor	649 sqft 2nd Floor
Basement Area	432 sqft Basement
Stories	2 Stories
Interior Structure	Wallboard/Drywall Interior Structure
Fireplace	Fireplace
Fireplaces	1 Fireplaces

Exterior

Year Built	Built 1985
Architectural Style	Split Level Style
Exterior Material	Aluminum/Vinyl Exterior
Construction Type	Frame Construction
Roof Construction	Gable Roof Construction
Roof Material	Composition Shingle Roof
Lot Area	9,583 sqft (0.219 acres)
Depth X Width	135 ft x 72 ft Depth x Width
Parking Spaces	2 Parking Spaces
Garage Type	Attached Garage
Garage Area	420 sqft Garage

Utilities and HVAC

Cooling System	Central Cooling
Heating System	Forced Air Heating

Location & Zoning

Account Number	R0011939
Old Parcel Number	157131406009
Street Address	4905 E 121ST AVE
City	THORNTON
State	CO
Zip	80241-3205
Property Usage	Residential Property Usage
Type	Residential > Single Family > Home
Legal Description	SUB:CONCORD FILING NO 1 BLK:4 LOT:9
Legal Range	67W
Legal Township	01S
Legal Section	31
Legal Quarter	NE
Legal Subdivision	CONCORD FILING NO 1
Legal Block	4
Legal Lot Number	9
Jurisdiction	ADAMS CO
Minor Civil Division	WEST ADAMS
Census Blockgroup	2
Census Block	2016
Census Tract	8547

Owner

Source: Adams County records · APN R0011939

Assessment roll updated August 25, 2025 · Last verified February 2026

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

Owner of Record	Individual Owner on File
Co-owner	Verified Secondary Owner
Mailing Address	4905 E 121ST AVE, THORNTON, CO 80241-3205
Occupancy	Owner Occupied
Owner Type	Owner is an Individual, Couple or Unincorporated Entity

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Verified Names on Deed
Known Transactions	Last Sale Amount on Jan 22, 1998 Deed Sale Price on Jan 22, 1998 Prior Sale Amount on Jan 22, 1998
Deed Doc Number	000C356305
Deed Book / Page	1571
Last Transfer Date	Oct 12, 2023
Transfer Doc	0000057920
Record Refreshed	Jun 08, 2026

October 2023: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	ADAMS CO
Recording Date	Oct 12, 2023
Property Address	4905 E 121ST AVE, THORNTON, CO 80241-3205
Document Number	0000057920
Instrument Date	Oct 12, 2023
Instrument	2023000057920
Transaction Type	Transfer
Record Updated	Oct 20, 2023

Transaction

Tax	$0.00
Amount Accuracy	Zero or No Consideration Stated
Additional	Interfamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Community Property
Address	4905 E LZLST AVE, THORNTON, CO 80241

Tax Assessment & Valuation

Source: Adams County records · Assessment roll updated August 25, 2025 · Last verified February 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	$937.00 (-74.04%)	$22,120 (-33.13%) Land $4,870 Building $17,250	$454,000 (-7.16%) Land $100,000 Building $354,000
2023	$3,609.00 (+8.84%)	$33,080 (+9.86%) Land $6,090 Building $26,990	$489,000 (+12.9%) Land $90,000 Building $399,000
2022	$3,316.00	$30,110 Land $12,240 Building $17,870	$433,119 Land $176,000 Building $257,119