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3901 E 121st Ave, Thornton, CO 80241 Property Records

Adams County property record for 3901 E 121st Ave, Thornton, CO 80241 · Last verified June 2026

Property Highlights

Property TypeResidential > Condominium / Townhouse > Townhouse
Bedrooms2 Beds
Bathrooms2 Baths
Year BuiltBuilt 1985
Square Footage1,085 sqft Living Area
Lot Size1,056 sqft (0.024 acres)
GarageCarport, 324 sqft
Last Sale$112,000 (2001)
Tax Bill$2,655.00 (2025)

Property Details

APN / Parcel Number

Primary APN1573-36-4-10-079
Alternative APNs
  • 0157336410079
  • R0026173

Interior

Bedrooms2 Beds
Full Baths2 Baths
Plumbing Fixtures7 Plumbing Fixtures
Total Rooms5 Rooms
Units4 Units
Building Area1,085 sqft Living Area
Gross Area1,484 sqft Gross Area
Basement Area399 sqft Basement
Stories2 Stories
Interior StructureWallboard/Drywall Interior Structure
FireplaceFireplace
Fireplaces1 Fireplaces

Exterior

Year BuiltBuilt 1985
Effective Year BuiltEffective 1985
Architectural StyleTownhouse Style
Exterior MaterialAluminum/Vinyl Exterior
Construction TypeFrame Construction
Roof ConstructionGable Roof Construction
Roof MaterialComposition Shingle Roof
Lot Area1,056 sqft (0.024 acres)
Depth X Width48 ft x 22 ft Depth x Width
Parking Spaces1 Parking Spaces
Garage TypeCarport Garage
Garage Area324 sqft Garage
CarportCarport
Carport Area324 sqft Carport
Deck Area63 sqft Deck
Patio Area63 sqft Patio

Utilities and HVAC

Cooling SystemCentral Cooling
Heating SystemForced Air with Air Conditioning Heating

Location & Zoning

Account NumberR0026173
Street Address3901 E 121ST AVE
CityTHORNTON
StateCO
Zip80241-3552
Property UsageResidential Property Usage
TypeResidential > Condominium / Townhouse > Townhouse
Legal DescriptionSUB:THORNTON RIDGE FILING NO 1 LOT:79
Legal Range68W
Legal Township01S
Legal Section36
Legal Quarter4
Legal SubdivisionTHORNTON RIDGE FILING NO 1
Legal Lot Number79
JurisdictionADAMS CO
Minor Civil DivisionWEST ADAMS
Census Blockgroup2
Census Block2000
Census Tract8555

Owner

Source: Adams County records · APN 1573-36-4-10-079

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

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

Owner of RecordIndividual Owner on File
Mailing Address3991 1/2 E 121ST AVE, THORNTON, CO 80241-3597
Owner TypeOwner is a Company

Deeds, Mortgages & Sale History

DateDocument
May 18, 2026Warranty Deed, Transfer
NONE LISTED ON DOCUMENT
Feb 03, 2023Warranty Deed, Transfer
Apr 06, 2020Warranty Deed, Transfer
SYNERGY ONE LNDG
Aug 13, 2018Trustee's Deed, Transfer
PINE FIN'L GROUP
Aug 09, 2018Quit Claim Deed, Transfer
HERITAGE TITLE COMPANY
May 16, 2018Grant Deed, Transfer

Assessor's Deed Record

Deed NamesVerified Name on Deed
Known Transactions
  • Last Sale Amount on Nov 21, 2001
  • Deed Sale Price on Nov 21, 2001
Deed Doc Number2001889905
Last Transfer DateMar 27, 2003
Transfer Doc00C1120906
Record RefreshedSep 20, 2026

May 2026: Warranty Deed, Transfer

Document TypeWarranty Deed
JurisdictionADAMS CO
Recording DateMay 18, 2026
Property Address3901 E 121ST AVE, THORNTON, CO 80241-3552
Document Number0000028490
Instrument DateMay 18, 2026
Instrument202628490
Transaction TypeTransfer
Record UpdatedJul 12, 2026
Title CompanyNONE LISTED ON DOCUMENT

Transaction

Tax$0.00
Amount AccuracyFull Amount Stated
Additional
  • Arms Length Transaction

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name

February 2023: Warranty Deed, Transfer

Document TypeWarranty Deed
JurisdictionADAMS CO
Recording DateFeb 03, 2023
Property Address3901 E 121ST AVE, THORNTON, CO 80241-3552
Document Number0000006319
Instrument DateFeb 03, 2023
Instrument2023000006319
Transaction TypeTransfer
Record UpdatedFeb 08, 2023

Transaction

Tax$0.00
Amount AccuracyZero or No Consideration Stated
Additional
  • Arms Length Transaction

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
Address3991 1 2 E 121ST AVENUE, THORNTON, CO 80241

April 2020: Warranty Deed, Transfer

Document TypeWarranty Deed
JurisdictionADAMS CO
Recording DateApr 06, 2020
Property Address3901 E 121ST AVE, THORNTON, CO 80241-3552
Document Number0000031265
Instrument DateFeb 07, 2020
Instrument31265
Transaction TypeTransfer
Record UpdatedApr 16, 2020
Title CompanyHILLSBOROUGH TITLE INC, HTC

Transaction

Tax$0.00
Additional
  • Arms Length Transaction

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
Address4249 STUART ST DENVER CO 802122333, DENVER, CO 80212-2333

Mortgage

Document Number31266
DateApr 06, 2020
Instrument31266
Lender
NameSYNERGY ONE LNDG
AddressSAN DIEGO, CA 92108
Agreement
AmountAmount Recorded
Term360 Months
DueApr 05, 2050

August 2018: Trustee's Deed, Transfer

Document TypeTrustee's Deed
JurisdictionADAMS CO
Recording DateAug 13, 2018
Property Address3901 E 121ST AVE, THORNTON, CO 80241-3552
Document Number0000065312
Instrument DateAug 10, 2018
Instrument65312
Transaction TypeTransfer
Record UpdatedAug 28, 2018
Title CompanyHERITAGE TITLE COMPANY

Transaction

AmountAmount Recorded
DownpaymentDownpayment on File
Loan-to-Value (LTV)LTV on Record
Tax$704.00
Amount AccuracyConfirmed
Additional
  • Arms Length Transaction
  • Multiple parcels conveyed, unknown impact to APN

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipCompany
AddressPO BOX 1393 ERIE CO 805161393, ERIE, CO 80516-1393
InvestorPossibly a Property Investor

Mortgage

Document Number65314
DateAug 13, 2018
Instrument65314
Lender
NamePINE FIN'L GROUP
TypeFunding / Finance Company
Address10200 W 44TH AVE # 220, WHEAT RIDGE, CO 80033-2839
Agreement
AmountAmount Recorded

August 2018: Quit Claim Deed, Transfer

Document TypeQuit Claim Deed
JurisdictionADAMS CO
Recording DateAug 09, 2018
Property Address3901 E 121ST AVE, THORNTON, CO 80241-3552
Document Number0000064702
Instrument DateAug 09, 2018
Instrument64702
Transaction TypeTransfer
Record UpdatedAug 17, 2018
Title CompanyHERITAGE TITLE COMPANY

Transaction

Tax$0.00
Additional
  • Quitclaim Document
  • Multiple parcels conveyed, unknown impact to APN

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipCompany
Address3991 E 121ST AVE THORNTON CO 802413597, THORNTON, CO 80241-3597

May 2018: Grant Deed, Transfer

Document TypeGrant Deed
JurisdictionADAMS CO
Recording DateMay 16, 2018
Property Address3901 E 121ST AVE, THORNTON, CO 80241-3552
Document Number0000039641
Instrument DateMay 14, 2018
Instrument39641
Transaction TypeTransfer
Record UpdatedMay 30, 2018

Transaction

Tax$0.00
Additional
  • Arms Length Transaction

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipCompany
Address3685 E 121ST AVE THORNTON CO 802413585, THORNTON, CO 80241-3585

Tax Assessment & Valuation

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

Property Jurisdictions

TypeName
StateColorado
CountyAdams County
MunicipalityThornton City
Unified School DistrictAdams 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.

YearTax BillAssessed ValueAssessed Market Value
2025$2,655.00 (+21.18%)$23,600 (-5.22%) Land $5,440 Building $18,160$347,000 (-5.71%) Land $80,000 Building $267,000
2024$2,191.00 (-19.33%)
2023$2,716.00 (+21.41%)$24,900 (+22.6%) Land $3,860 Building $21,040$368,000 (+25.91%) Land $57,000 Building $311,000
2022$2,237.00$20,310 Land $2,080 Building $18,230$292,274 Land $30,000 Building $262,274

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