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

3751 E 121st Ave, Thornton, CO 80241 Property Records

Adams County property record for 3751 E 121st Ave, Thornton, CO 80241 · Last verified February 2026

Property Highlights

Property TypeResidential > Condominium / Townhouse > Townhouse
Bedrooms2 Beds
Bathrooms2 Baths
Architecture StyleTownhouse
Year BuiltBuilt 2000
Square Footage1,286 sqft Living Area
Lot Size1,281 sqft (0.029 acres)
Tax Bill$1,017.00 (2025)

Property Details

APN / Parcel Number

Primary APNR0161418
Alternative APNs
  • 0157336410165
  • 157336410165

Interior

Bedrooms2 Beds
Full Baths2 Baths
Plumbing Fixtures8 Plumbing Fixtures
Total Rooms5 Rooms
Units6 Units
Building Area1,286 sqft Living Area
Basement Area624 sqft Basement
Stories2 Stories
Interior StructureWallboard/Drywall Interior Structure
FireplaceFireplace
Fireplaces1 Fireplaces

Exterior

Year BuiltBuilt 2000
Architectural StyleTownhouse Style
Exterior MaterialAluminum/Vinyl Exterior
Construction TypeFrame Construction
Foundation TypeConcrete Foundation
Roof ConstructionGable Roof Construction
Roof MaterialComposition Shingle Roof
Lot Area1,281 sqft (0.029 acres)

Exterior Amenities

Deck Area64 sqft Deck
Patio Area64 sqft Patio
PorchPorch
Porch Area32 sqft Porch

Utilities and HVAC

Cooling SystemCentral Cooling
Heating SystemForced Air Heating

Location & Zoning

Account NumberR0161418
Old Parcel Number157336410165
Street Address3751 E 121ST AVE
CityTHORNTON
StateCO
Zip80241-3595
Property UsageResidential Property Usage
TypeResidential > Condominium / Townhouse > Townhouse
Legal DescriptionSUB:THORNTON RIDGE FILING #1 AMENDMENT #1 BLK:1 LOT:28-A
Legal Range68W
Legal Township01S
Legal Section36
Legal QuarterSE
Legal SubdivisionTHORNTON RIDGE FILING #1 AMENDMENT #1
Legal Block1
Legal Lot Number28-A
JurisdictionADAMS CO
Minor Civil DivisionWEST ADAMS
Census Blockgroup2
Census Block2000
Census Tract8555

Owner

Source: Adams County records · APN R0161418

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 RecordIndividual Owner on File
Mailing Address3991 E 121ST AVE, THORNTON, CO 80241-3597

Deeds, Mortgages & Sale History

DateDocument
Feb 02, 2017Deed of Trust, Mortgage
NORTH VALLEY BANK
Feb 02, 2017Deed of Trust, Mortgage · Conventional Mortgage
NORTH VLY BK

Assessor's Deed Record

Deed NamesVerified Name on Deed
Known Transactions
  • Prior Sale Amount on Feb 04, 2003
Last Transfer DateMar 03, 2011
Transfer Doc0000014353
Record RefreshedJun 08, 2026

February 2017: Deed of Trust, Mortgage

Document TypeDeed of Trust
JurisdictionADAMS CO
Property Address3751 E 121ST AVE, THORNTON, CO 80241-3595
Transaction TypeMortgage
Record UpdatedFeb 07, 2021

Transferred To (Grantee/Buyer)

NameVerified Name

Mortgage

Document Number0000010634
DateFeb 02, 2017
Instrument2017000010634
Lender
NameNORTH VALLEY BANK
TypeBank
AddressDENVER, CO 80229
Agreement
AmountAmount Recorded
Term120 Months
DueFeb 02, 2027

February 2017: Deed of Trust, Mortgage

Document TypeDeed of Trust
JurisdictionADAMS CO
Property Address3751 E 121ST AVE, THORNTON, CO 80241-3595
Document Number0000010638
Instrument DateFeb 02, 2017
Transaction TypeMortgage
Record UpdatedJan 08, 2019
Title CompanyNOT AVAILABLE

Transferred To (Grantee/Buyer)

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

Mortgage

Document Number0000010638
DateFeb 02, 2017
Instrument10638
Lender
NameNORTH VLY BK
TypeBank
AddressTHORNTON, CO 80229
Agreement
TypeConventional Mortgage
AmountAmount Recorded
Term120 Months
DueFeb 01, 2027

Tax Assessment & Valuation

Source: Adams County records · Assessment roll updated August 25, 2025 · Last verified February 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 and are not market price estimates.

YearTax BillAssessed ValueAssessed Market Value
2025$1,017.00 (-65.2%)$24,000 (-10.41%) Land $5,000 Building $19,000$384,000 (-3.03%) Land $80,000 Building $304,000
2023$2,922.00 (+26.06%)$26,790 (+27.27%) Land $3,860 Building $22,930$396,000 (+30.72%) Land $57,000 Building $339,000
2022$2,318.00$21,050 Land $2,080 Building $18,970$302,927 Land $30,000 Building $272,927

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