Frederick Cir, Longmont, CO Property Records

Boulder County property records for 41 addresses on Frederick Cir, Longmont, CO · Last verified August 2026

Frederick Cir Highlights

Properties 41
Median Sale Price $830,000
Deeds and Mortgages on File 64
Median Price per Sqft $239
Owner Occupied 90%
Median Annual Tax Bill $5,733
Median Year Built 2003
Median Ownership Tenure 17 years

Properties on Frederick Cir

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

4001 Frederick Cir

4 bd · 2.5 ba · 1,788 sqft · 0.111 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$174,425May 2004 $4,1062025 2 Names on Record Owner Occupied AssessorUpdated Jun 2026

4005 Frederick Cir

5 bd · 2.5 ba · 1,985 sqft · 0.109 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$640,000Sep 2025 $4,3922025 Sale Amount Nov 2018 2 Names on Record Owner Occupied Assessor + 3 DocumentsUpdated Jun 2026

4009 Frederick Cir

5 bd · 3 ba · 2,214 sqft · 0.112 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$184,115Feb 2004 $1,9372025 1 Name on Record Owner Occupied AssessorUpdated Jun 2026

4013 Frederick Cir

4 bd · 2.5 ba · 1,788 sqft · 0.113 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$274,000Jul 2013 $4,1322025 Sale Amount Jan 2012 1 Name on Record Assessor + 1 DocumentUpdated Jun 2026

4017 Frederick Cir

4 bd · 2.25 ba · 1,955 sqft · 0.111 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$646,000May 2026 $4,4502025 Sale Amount Dec 2017 1 Name on Record Owner Occupied Assessor + 3 DocumentsUpdated Jun 2026

4021 Frederick Cir

5 bd · 3.5 ba · 2,214 sqft · 0.112 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$470,000Aug 2018 $4,4512025 Sale Amount Apr 2008 1 Name on Record Assessor + 4 DocumentsUpdated Jun 2026

4025 Frederick Cir

4 bd · 3 ba · 2,645 sqft · 0.17 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$410,000Sep 2009 $5,8262025 Sale Amount Feb 2005 2 Names on Record Owner Occupied AssessorUpdated Jun 2026

4026 Frederick Cir

4 bd · 2.75 ba · 3,070 sqft · 0.148 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$607,500Dec 2018 $5,4622025 Sale Amount Jul 2015 2 Names on Record Owner Occupied Assessor + 2 DocumentsUpdated Jun 2026

4029 Frederick Cir

4 bd · 2.5 ba · 2,972 sqft · 0.236 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$468,500Jan 2009 $6,2632025 —Aug 2008 2 Names on Record Owner Occupied AssessorUpdated Jun 2026

4033 Frederick Cir

6 bd · 3.75 ba · 4,095 sqft · 0.283 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$445,000Jan 2012 $6,6452025 Sale Amount Feb 2004 1 Name on Record Owner Occupied Assessor + 2 DocumentsUpdated Aug 2026

4039 Frederick Cir

4 bd · 3 ba · 2,645 sqft · 0.17 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$352,109Dec 2004 $5,8242025 —Dec 2004 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Jun 2026

4044 Frederick Cir

4 bd · 3 ba · 2,645 sqft · 0.141 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$370,000Jul 2009 $5,7222025 Sale Amount May 2007 2 Names on Record Owner Occupied AssessorUpdated Jun 2026

4045 Frederick Cir

4 bd · 2.5 ba · 2,972 sqft · 0.188 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$347,763Aug 2003 $5,5062025 2 Names on Record Owner Occupied AssessorUpdated Jun 2026

4051 Frederick Cir

3 bd · 2 ba · 1,874 sqft · 0.169 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$420,000Mar 2015 $5,3622025 Sale Amount Oct 2009 2 Names on Record Owner Occupied AssessorUpdated Jun 2026

4052 Frederick Cir

5 bd · 4.25 ba · 4,700 sqft · 0.146 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$1,049,000May 2024 $6,6492025 Sale Amount Dec 2021 1 Name on Record Owner Occupied Assessor + 1 DocumentUpdated Jun 2026

4057 Frederick Cir

5 bd · 4 ba · 4,072 sqft · 0.171 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$391,371Oct 2004 $6,1952025 —Oct 2004 2 Names on Record Owner Occupied Assessor + 4 DocumentsUpdated Jun 2026

4058 Frederick Cir

4 bd · 3 ba · 2,960 sqft · 0.146 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$348,000Jul 2009 $5,2392025 Sale Amount Sep 2005 1 Name on Record Owner Occupied AssessorUpdated Jun 2026

4103 Frederick Cir

5 bd · 3.5 ba · 4,888 sqft · 0.168 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$360,000Jul 2011 $6,6032025 Sale Amount Jun 2009 2 Names on Record Assessor + 1 DocumentUpdated Jun 2026

4104 Frederick Cir

5 bd · 3.75 ba · 4,541 sqft · 0.145 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$460,000Jan 2015 $6,6562025 Sale Amount Oct 2004 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Jun 2026

4109 Frederick Cir

5 bd · 3.75 ba · 4,374 sqft · 0.166 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$910,000Jul 2025 $6,0302025 Sale Amount May 2021 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Jun 2026

4110 Frederick Cir

3 bd · 2 ba · 1,874 sqft · 0.146 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$346,099Apr 2004 $4,6742025 1 Name on Record Owner Occupied Assessor + 1 DocumentUpdated Jun 2026

4115 Frederick Cir

4 bd · 3 ba · 2,645 sqft · 0.168 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$830,000Apr 2025 $5,8162025 Sale Amount Sep 2014 1 Name on Record Owner Occupied Assessor + 2 DocumentsUpdated Jun 2026

4116 Frederick Cir

4 bd · 2.5 ba · 2,972 sqft · 0.147 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$398,942Aug 2005 $6,0112025 2 Names on Record Owner Occupied Assessor + 2 DocumentsUpdated Jun 2026

4121 Frederick Cir

3 bd · 2 ba · 3,054 sqft · 0.167 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$433,500Mar 2014 $5,7332025 Sale Amount Oct 2007 2 Names on Record Owner Occupied Assessor + 2 DocumentsUpdated Jun 2026

4122 Frederick Cir

4 bd · 3.75 ba · 4,374 sqft · 0.144 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$708,500Jun 2020 $6,4192025 Sale Amount Jun 2008 2 Names on Record Owner Occupied Assessor + 2 DocumentsUpdated Aug 2026

4127 Frederick Cir

4 bd · 2.5 ba · 4,620 sqft · 0.166 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$340,000Nov 2009 $6,2382025 Sale Amount Aug 2004 2 Names on Record Assessor + 4 DocumentsUpdated Jun 2026

4128 Frederick Cir

5 bd · 3.75 ba · 3,398 sqft · 0.146 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$505,000May 2014 $6,5152025 Sale Amount Feb 2006 2 Names on Record Owner Occupied Assessor + 2 DocumentsUpdated Jun 2026

4133 Frederick Cir

5 bd · 3.75 ba · 4,673 sqft · 0.166 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$413,693Oct 2005 $6,5192025 2 Names on Record Owner Occupied AssessorUpdated Jun 2026

4134 Frederick Cir

4 bd · 3.5 ba · 4,148 sqft · 0.146 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$387,702Nov 2004 $5,5492025 —Nov 2004 1 Name on Record Owner Occupied AssessorUpdated Jun 2026

4201 Frederick Cir

5 bd · 3.75 ba · 3,595 sqft · 0.161 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$726,000Apr 2020 $6,2942025 Sale Amount May 2015 1 Name on Record Owner Occupied Assessor + 3 DocumentsUpdated Jun 2026

4206 Frederick Cir

3 bd · 2 ba · 1,874 sqft · 0.146 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$332,616Sep 2005 $5,4462025 2 Names on Record Owner Occupied AssessorUpdated Jun 2026

4207 Frederick Cir

4 bd · 2.5 ba · 2,972 sqft · 0.173 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$870,000Apr 2024 $6,1032025 Sale Amount Mar 2005 1 Name on Record Owner Occupied AssessorUpdated Aug 2026

4212 Frederick Cir

4 bd · 3 ba · 2,645 sqft · 0.146 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$366,900Jun 2010 $5,8852025 —Mar 2010 1 Name on Record Owner Occupied Assessor + 2 DocumentsUpdated Jun 2026

4213 Frederick Cir

3 bd · 2 ba · 1,874 sqft · 0.185 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
—May 2009 $4,6862025 Sale Amount Sep 2004 2 Names on Record Owner Occupied Assessor + 3 DocumentsUpdated Aug 2026

4219 Frederick Cir

4 bd · 2.5 ba · 3,736 sqft · 0.201 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$895,000Jul 2025 $6,4562025 Sale Amount Nov 2020 2 Names on Record Owner Occupied Assessor + 2 DocumentsUpdated Jun 2026

4225 Frederick Cir

3 bd · 2 ba · 1,874 sqft · 0.232 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$329,236Jul 2004 $4,9032025 2 Names on Record Owner Occupied AssessorUpdated Jun 2026

4231 Frederick Cir

5 bd · 3.25 ba · 3,840 sqft · 0.182 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$567,000Jul 2016 $6,8662025 2 Names on Record Owner Occupied Assessor + 6 DocumentsUpdated Jun 2026

4236 Frederick Cir

4 bd · 3 ba · 3,636 sqft · 0.147 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$439,121Jul 2007 $5,4942025 1 Name on Record Owner Occupied Assessor + 3 DocumentsUpdated Jul 2026

4237 Frederick Cir

3 bd · 2.5 ba · 2,645 sqft · 0.16 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$385,013Feb 2005 $5,2942025 2 Names on Record Owner Occupied Assessor + 2 DocumentsUpdated Jun 2026

4243 Frederick Cir

4 bd · 2.5 ba · 4,888 sqft · 0.159 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$414,649Dec 2004 $5,6812025 —Jan 2011 1 Name on Record Owner Occupied AssessorUpdated Jun 2026

4249 Frederick Cir

4 bd · 2.75 ba · 3,410 sqft · 0.171 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$381,443Mar 2007 $5,1222025 Sale Amount Sep 2005 1 Name on Record Owner Occupied Assessor + 4 DocumentsUpdated Jun 2026

Property Records in Nearby Streets