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

3917 E 121st Ave, Thornton, CO 80241 Property Records

Adams County property record for 3917 E 121st Ave, Thornton, CO 80241 · Last verified August 2026

Property Highlights

Property TypeResidential > Condominium / Townhouse > Townhouse
Bedrooms2 Beds
Bathrooms2 Baths
Architecture StyleTownhouse
Year BuiltBuilt 1985
Square Footage1,085 sqft Living Area
Lot Size1,078 sqft (0.025 acres)
GarageCarport, 324 sqft
Tax Bill$2,163.00 (2024)

Property Details

APN / Parcel Number

Primary APN1573-36-4-10-085
Alternative APNs
  • 0157336410085
  • R0026179

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 Area1,078 sqft (0.025 acres)
Depth X Width49 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 NumberR0026179
Street Address3917 E 121ST AVE
CityTHORNTON
StateCO
Zip80241-3553
Property UsageResidential Property Usage
TypeResidential > Condominium / Townhouse > Townhouse
Legal DescriptionSUB:THORNTON RIDGE FILING NO 1 LOT:85
Legal Range68W
Legal Township01S
Legal Section36
Legal Quarter4
Legal SubdivisionTHORNTON RIDGE FILING NO 1
Legal Lot Number85
JurisdictionADAMS CO
Minor Civil DivisionWEST ADAMS
Census Blockgroup2
Census Block2000
Census Tract8555

Owner

Source: Adams County records · APN 1573-36-4-10-085

Assessment roll updated January 21, 2026 · Last verified August 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 AddressPO BOX 1393, ERIE, CO 80516-1393
Owner TypeOwner is a Company

Deeds, Mortgages & Sale History

DateDocument
Jun 12, 2023Intrafamily Transfer, Transfer
Feb 03, 2023Warranty Deed, Transfer
Feb 11, 2020Quit Claim Deed, Transfer
SYNERGY ONE LNDG
Dec 04, 2018Grant Deed, Construction Loan · Line of Credit
ALOHA CAP LLC
Dec 04, 2018Quit Claim Deed, Transfer
HERITAGE TITLE COMPANY, HERITAGE TITLE CO.

Assessor's Deed Record

Deed NamesVerified Name on Deed
Last Transfer DateJun 09, 2023
Transfer Doc0000033083
Record RefreshedSep 20, 2026

June 2023: Intrafamily Transfer, Transfer

Document TypeIntrafamily Transfer
JurisdictionADAMS CO
Recording DateJun 12, 2023
Property Address3917 E 121ST AVE, THORNTON, CO 80241-3553
Document Number0000033083
Instrument DateJun 09, 2023
Instrument2023000033083
Transaction TypeTransfer
Record UpdatedJun 21, 2023

Transaction

Tax$0.00
Amount AccuracyZero or No Consideration Stated
Additional
  • Interfamily Transfer

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
AddressPO BOX 1393, ERIE, CO 80516-1393

February 2023: Warranty Deed, Transfer

Document TypeWarranty Deed
JurisdictionADAMS CO
Recording DateFeb 03, 2023
Property Address3917 E 121ST AVE, THORNTON, CO 80241-3553
Document Number0000006309
Instrument DateFeb 03, 2023
Instrument2023000006309
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
AddressPO BOX 1393, ERIE, CO 80516-1393
InvestorPossibly a Property Investor

February 2020: Quit Claim Deed, Transfer

Document TypeQuit Claim Deed
JurisdictionADAMS CO
Recording DateFeb 11, 2020
Property Address3917 E 121ST AVE, THORNTON, CO 80241-3553
Document Number0000013387
Instrument DateFeb 07, 2020
Instrument13387
Transaction TypeTransfer
Record UpdatedFeb 20, 2020
Title CompanyHILLSBOROUGH TITLE INC, HTC

Transaction

Tax$0.00
Additional
  • Quitclaim Document
  • Interfamily Transfer

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
AddressPO BOX 1393 ERIE CO 805161393, ERIE, CO 80516-1393

Mortgage

Document Number13388
DateFeb 11, 2020
Instrument13388
Lender
NameSYNERGY ONE LNDG
AddressSAN DIEGO, CA 92108
Agreement
AmountAmount Recorded
Term480 Months
DueFeb 10, 2060

December 2018: Grant Deed, Construction Loan

Document TypeGrant Deed
JurisdictionADAMS CO
Recording DateDec 04, 2018
Property Address3917 E 121ST AVE, THORNTON, CO 80241-3553
Document Number0000096745
Instrument DateNov 30, 2018
Instrument96745
Transaction TypeConstruction Loan
Record UpdatedDec 13, 2018
Title CompanyHERITAGE TITLE COMPANY, HERITAGE TITLE CO.

Transaction

AmountAmount Recorded
DownpaymentDownpayment on File
Loan-to-Value (LTV)LTV on Record
Tax$220.00
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
RelationshipTenants In Common
AddressPO BOX 1393 ERIE CO 805161393, ERIE, CO 80516-1393
InvestorPossibly a Property Investor

Mortgage

Document Number96746
DateDec 04, 2018
Instrument96746
Lender
NameALOHA CAP LLC
Address2525 ARAPAHOE AVE # E4-259, BOULDER, CO 80302-6720
Agreement
TypeLine of Credit
AmountAmount Recorded
Term12 Months
DueDec 03, 2019
Interest
Rate TypeAdjustable Rate

December 2018: Quit Claim Deed, Transfer

Document TypeQuit Claim Deed
JurisdictionADAMS CO
Recording DateDec 04, 2018
Property Address3917 E 121ST AVE, THORNTON, CO 80241-3553
Document Number0000096744
Instrument DateNov 30, 2018
Instrument96744
Transaction TypeTransfer
Record UpdatedDec 13, 2018
Title CompanyHERITAGE TITLE COMPANY, HERITAGE TITLE CO.

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
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 August 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$919.00 (-57.51%)$23,600 (-4.18%) Land $5,440 Building $18,160$347,000 (-4.67%) Land $80,000 Building $267,000
2024$2,163.00 (-19.5%)
2023$2,687.00 (+22.86%)$24,630 (+24.02%) Land $3,860 Building $20,770$364,000 (+27.34%) Land $57,000 Building $307,000
2022$2,187.00$19,860 Land $2,080 Building $17,780$285,848 Land $30,000 Building $255,848

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