1. Home
  2. Colorado
  3. Adams County
  4. Thornton
  5. E 121st Ave

3863 E 121st Ave, Thornton, CO 80241 Property Records

Adams County property record for 3863 E 121st Ave, Thornton, CO 80241 · Last verified April 2026

Property Highlights

Property TypeResidential > Condominium / Townhouse > Townhouse
Bedrooms3 Beds
Bathrooms2.5 Baths
Architecture StyleTownhouse
Year BuiltBuilt 2001
Square Footage1,286 sqft Living Area
Lot Size1,122 sqft (0.026 acres)
Last Sale$286,000 (2019)
Tax Bill$2,479.00 (2024)

Property Details

APN / Parcel Number

Primary APN1573-36-4-10-105
Alternative APNs
  • 0157336410105
  • R0026199

Interior

Bedrooms3 Beds
Full Baths2.5 Baths
Partial Baths1 Partial Baths
Plumbing Fixtures9 Plumbing Fixtures
Total Rooms5 Rooms
Units6 Units
Building Area1,286 sqft Living Area
Gross Area1,910 sqft Gross Area
Basement Area624 sqft Basement
Stories2 Stories
Interior StructureWallboard/Drywall Interior Structure
FireplaceFireplace
Fireplaces1 Fireplaces

Exterior

Year BuiltBuilt 2001
Effective Year BuiltEffective 2001
Architectural StyleTownhouse Style
Exterior MaterialAluminum/Vinyl Exterior
Construction TypeFrame Construction
Roof ConstructionGable Roof Construction
Roof MaterialComposition Shingle Roof
Lot Area1,122 sqft (0.026 acres)
Depth X Width51 ft x 22 ft Depth x Width
Deck Area64 sqft Deck
Patio Area64 sqft Patio
Porch Area32 sqft Porch

Utilities and HVAC

Cooling SystemCentral Cooling
Heating SystemForced Air with Air Conditioning Heating

Location & Zoning

Account NumberR0026199
Street Address3863 E 121ST AVE
CityTHORNTON
StateCO
Zip80241-3567
Property UsageResidential Property Usage
TypeResidential > Condominium / Townhouse > Townhouse
Legal DescriptionSUB:THORNTON RIDGE FILING NO 1 LOT:105
Legal Range68W
Legal Township01S
Legal Section36
Legal Quarter4
Legal SubdivisionTHORNTON RIDGE FILING NO 1
Legal Lot Number105
JurisdictionADAMS CO
Minor Civil DivisionWEST ADAMS
Census Blockgroup2
Census Block2000
Census Tract8555

Owner

Source: Adams County records · APN 1573-36-4-10-105

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 RecordIndividual Owner on File
Mailing Address14140 IVANHOE ST, THORNTON, CO 80602-8337
Owner TypeOwner is a Company

Deeds, Mortgages & Sale History

DateDocument
Mar 11, 2019Warranty Deed, Transfer
HERITAGE TITLE COMPANY, HERITAGE TITLE CO.
Mar 11, 2019Quit Claim Deed, Transfer
HERITAGE TITLE COMPANY, HERITAGE TITLE CO.
Aug 08, 2018Grant Deed, Transfer
ATTORNEY ONLY

Assessor's Deed Record

Deed NamesVerified Name on Deed
Known Transactions
  • Last Sale Amount on Mar 11, 2019
  • Deed Sale Price on Mar 11, 2019
Deed Doc Number201917337
Prior Transfer DateMar 27, 2003
Prior Transfer Doc00C1120923
Record RefreshedJun 08, 2026

March 2019: Warranty Deed, Transfer

Document TypeWarranty Deed
JurisdictionADAMS CO
Recording DateMar 11, 2019
Property Address3863 E 121ST AVE, THORNTON, CO 80241-3567
Document Number0000017337
Instrument DateMar 08, 2019
Instrument17337
Transaction TypeTransfer
Record UpdatedMar 20, 2019
Title CompanyHERITAGE TITLE COMPANY, HERITAGE TITLE CO.

Transaction

AmountAmount Recorded
Tax$28.60
Amount AccuracyConfirmed
Additional
  • Arms Length Transaction

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipCompany
Address16533 GILPIN ST THORNTON CO 806027659, THORNTON, CO 80602-7659

March 2019: Quit Claim Deed, Transfer

Document TypeQuit Claim Deed
JurisdictionADAMS CO
Recording DateMar 11, 2019
Property Address3863 E 121ST AVE, THORNTON, CO 80241-3567
Document Number0000017335
Instrument DateMar 08, 2019
Instrument17335
Transaction TypeTransfer
Record UpdatedMar 20, 2019
Title CompanyHERITAGE TITLE COMPANY, HERITAGE TITLE CO.

Transaction

Tax$0.00
Additional
  • Quitclaim Document
  • 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

August 2018: Grant Deed, Transfer

Document TypeGrant Deed
JurisdictionADAMS CO
Recording DateAug 08, 2018
Property Address3863 E 121ST AVE, THORNTON, CO 80241-3567
Document Number0000064236
Instrument DateFeb 25, 2011
Instrument64236
Transaction TypeTransfer
Record UpdatedAug 20, 2018
Title CompanyATTORNEY ONLY

Transaction

Tax$0.00
Additional
  • 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

Tax Assessment & Valuation

Source: Adams County records · Assessment roll updated January 21, 2026 · Last verified April 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$1,046.00 (-57.81%)$26,860 (-2.93%) Land $5,440 Building $21,420$395,000 (-3.42%) Land $80,000 Building $315,000
2024$2,479.00 (-17.86%)
2023$3,018.00 (+28.37%)$27,670 (+29.6%) Land $3,860 Building $23,810$409,000 (+33.14%) Land $57,000 Building $352,000
2022$2,351.00$21,350 Land $2,080 Building $19,270$307,206 Land $30,000 Building $277,206

Nearby Properties on E 121st Ave

Nearby Streets

Search Property Records by Address or Parcel Number

Search by:

By searching, you agree to: Terms • Privacy • Disclosures