1st Ave, Lyons, CO Property Records

Boulder County property records for 17 addresses on 1st Ave, Lyons, CO · Last verified June 2026

1st Ave Highlights

Properties 17
Median Sale Price $1,025,000
Deeds and Mortgages on File 24
Median Price per Sqft $317
Owner Occupied 12%
Median Annual Tax Bill $9,520
Median Year Built 2004
Median Ownership Tenure 11 years

Properties on 1st Ave

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

617 1st Ave

3 bd · 3 ba · 3,332 sqft · 0.274 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$215,000Jul 2019 $9,3762025 Sale Amount Aug 2012 2 Names on Record Assessor + 2 DocumentsUpdated Jun 2026

619 1st Ave

4 bd · 3.25 ba · 4,159 sqft · 0.189 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$734,518Dec 2006 $11,2822025 Sale Amount Feb 2006 2 Names on Record AssessorUpdated Jun 2026

621 1st Ave

3 bd · 2.5 ba · 3,228 sqft · 0.166 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$1,025,000Mar 2022 $10,1882025 Sale Amount Jan 2007 1 Name on Record Assessor + 5 DocumentsUpdated Jun 2026

623 1st Ave

3 bd · 3.5 ba · 3,376 sqft · 0.151 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$550,000Jun 2013 $10,2752025 Sale Amount Jun 2006 2 Names on Record Assessor + 1 DocumentUpdated Jun 2026

625 1st Ave

3 bd · 3.5 ba · 3,376 sqft · 0.174 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$1,250,000Feb 2024 $10,8662025 Sale Amount Jun 2015 2 Names on Record Owner Occupied Assessor + 3 DocumentsUpdated Jun 2026

627 1st Ave

3 bd · 2.75 ba · 3,356 sqft · 0.141 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$585,900Dec 2005 $9,1592025 Sale Amount Jan 2005 1 Name on Record Assessor + 1 DocumentUpdated Jun 2026

629 1st Ave

3 bd · 2.5 ba · 3,382 sqft · 0.173 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$542,500Mar 2005 $8,8442025 —Feb 2005 1 Name on Record Assessor + 3 DocumentsUpdated Jun 2026

631 1st Ave

3 bd · 2.5 ba · 3,024 sqft · 0.139 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$620,000May 2015 $9,5872025 Sale Amount Aug 2008 1 Name on Record AssessorUpdated Jun 2026

633 1st Ave

3 bd · 2.5 ba · 3,111 sqft · 0.168 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$440,000Sep 2008 $7,6232025 —Sep 2008 2 Names on Record AssessorUpdated Jun 2026

635 1st Ave

3 bd · 2 ba · 1,936 sqft · 0.149 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$460,500Apr 2006 $7,8322025 —Apr 2006 1 Name on Record AssessorUpdated Jun 2026

637 1st Ave

4 bd · 4.5 ba · 2,938 sqft · 0.17 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$752,000Oct 2019 $9,4972025 Sale Amount Jun 2015 2 Names on Record Assessor + 1 DocumentUpdated Jun 2026

639 1st Ave

3 bd · 2.75 ba · 1,645 sqft · 0.194 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$334,000Jun 2004 $7,0272025 1 Name on Record Assessor + 1 DocumentUpdated Jun 2026

641 1st Ave

3 bd · 2.5 ba · 2,938 sqft · 0.15 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$460,000Aug 2002 $9,5202025 Sale Amount Nov 2001 1 Name on Record AssessorUpdated Jun 2026

643 1st Ave

3 bd · 2.5 ba · 3,136 sqft · 0.146 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$1,172,187Jun 2025 $9,7142025 Sale Amount Sep 2023 1 Name on Record Assessor + 3 DocumentsUpdated Jun 2026

645 1st Ave

3 bd · 2.5 ba · 2,551 sqft · 0.173 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$1,039,500Aug 2025 $8,8482025 Sale Amount May 2015 1 Name on Record Owner Occupied Assessor + 3 DocumentsUpdated Jun 2026

647 1st Ave

3 bd · 3 ba · 2,740 sqft · 0.172 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$650,000Jun 2016 $9,9532025 Sale Amount Jan 2004 2 Names on Record Assessor + 1 DocumentUpdated Jun 2026

649 1st Ave

4 bd · 3.5 ba · 2,828 sqft · 0.193 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$599,000Jul 2016 $9,7202025 Sale Amount Jan 2014 2 Names on Record AssessorUpdated Jun 2026

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