First St, Thornton, CO Property Records

Adams County property records for 10 addresses on First St, Thornton, CO · Last verified August 2026

First St Highlights

Properties 10
Median Sale Price $350,000
Deeds and Mortgages on File 12
Median Price per Sqft $187
Owner Occupied 30%
Median Annual Tax Bill $10,997
Median Year Built 1956
Median Ownership Tenure 20 years

Properties on First St

Owner names and prior sale amounts shown locked below are available instantly with a free trial.

12400 First St

4 bd · 1 ba · 2,280 sqft · 0.313 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$218,000Jan 2006 $12,0852025 Sale Amount May 1997 1 Name on Record Assessor + 1 DocumentUpdated Jun 2026

12410 First St

2 bd · 1 ba · 952 sqft · 0.219 acres

Last Sale Tax Bill Prior Sale Owner Records
$133,000May 2001 $9642025 1 Name on Record Assessor + 1 DocumentUpdated Feb 2026

12420 First St

3 bd · 3 ba · 2,133 sqft · 0.21 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$231,000Feb 2012 $1,4492025 2 Names on Record Owner Occupied Assessor + 3 DocumentsUpdated Feb 2026

12430 First St

3 bd · 1 ba · 1,228 sqft · 0.36 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$8322025 —May 1994 1 Name on Record AssessorUpdated Feb 2026

12460 First St

3,562 sqft · Built 1945 · 0.4 acres

Last Sale Tax Bill Prior Sale Owner Records
$889,880Jan 2004 $10,9972025 —Oct 2015 1 Name on Record Assessor + 2 DocumentsUpdated Feb 2026

12490 First St

2 bd · 1 ba · 955 sqft · 0.287 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$179,000May 2001 $1,0412025 —Nov 2004 1 Name on Record Owner Occupied AssessorUpdated Feb 2026

12500 First St, Unit 1

3,590 sqft · Built 2001 · 0.287 acres

Last Sale Tax Bill Prior Sale Owner Records
$14,7932024 1 Name on Record AssessorUpdated Apr 2026

12520 First St

4 bd · 2 ba · 2,284 sqft · 0.215 acres

Last Sale Tax Bill Prior Sale Owner Records
$350,000Jul 2002 $14,2982024 Sale Amount Dec 1998 1 Name on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

12590 First St

3,200 sqft · Built 1973 · 0.358 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,595,000Jul 2022 $19,5882025 Sale Amount Oct 2000 1 Name on Record Assessor + 3 DocumentsUpdated Aug 2026

12598 First St

3 bd · 1 ba · 1,342 sqft · 0.143 acres

Last Sale Tax Bill Prior Sale Owner Records
$670,000Apr 2023 $2,8222024 1 Name on Record Assessor + 1 DocumentUpdated Jun 2026

Property Records in Nearby Streets