1st Ave, Longmont, CO Property Records

Boulder County property records for 24 addresses on 1st Ave, Longmont, CO · Last verified August 2026

1st Ave Highlights

Properties 24
Median Sale Price $1,770,000
Deeds and Mortgages on File 24
Median Price per Sqft $102
Owner Occupied 25%
Median Annual Tax Bill $12,716
Median Year Built 1974
Median Ownership Tenure 28 years

Properties on 1st Ave

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

51 1st Ave

9,405 sqft · built 1982 · 1.2 acres

Last Sale Tax Bill Prior Sale Owner Records
$780,000Jul 2003 $52,1902025 Owner on Record Assessor + 1 DocumentUpdated Jun 2026

301 1st Ave

11.7 acres

Last Sale Tax Bill Prior Sale Owner Records
$11,900,000Dec 2022 $123,9172025 Owner on Record Assessor + 1 DocumentUpdated Jun 2026

331 1st Ave

38,500 sqft · built 1974 · 2.33 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,770,000Dec 2004 $85,3132025 Owner on Record Assessor + 2 DocumentsUpdated Jun 2026

333 1st Ave

11,619 sqft · built 2008 · 0.787 acres

Last Sale Tax Bill Prior Sale Owner Records
$50,5672025 Owner on Record Assessor + 2 DocumentsUpdated Jun 2026

335 1st Ave

12,667 sqft · built 1974 · 0.943 acres

Last Sale Tax Bill Prior Sale Owner Records
—Jan 1990 $42,6062025 Owner on Record Assessor + 2 DocumentsUpdated Jun 2026

350 1st Ave

2.41 acres

Last Sale Tax Bill Prior Sale Owner Records
Owner on Record Owner Occupied AssessorUpdated Jun 2026

501 1st Ave

3,202 sqft · built 2006 · 31.7 acres

Last Sale Tax Bill Prior Sale Owner Records
Owner on Record Owner Occupied AssessorUpdated Jun 2026

613 1st Ave

0.562 acres

Last Sale Tax Bill Prior Sale Owner Records
$2,600,000Aug 2025 $6,8852025 —Jun 1988 Owner on Record Assessor + 1 DocumentUpdated Jun 2026

617 1st Ave

3 bd · 2 ba · 2,592 sqft · built 1972 · 0.314 acres

Last Sale Tax Bill Prior Sale Owner Records
$125,000Sep 1999 $5,6872023 3 Owners on Record Assessor + 1 DocumentUpdated Mar 2024

705 1st Ave

3 bd · 1 ba · 1,325 sqft · built 1910 · 0.416 acres

Last Sale Tax Bill Prior Sale Owner Records
—Jan 1958 $4,3342025 —Jun 2009 Owner on Record AssessorUpdated Jun 2026

711 1st Ave

5,600 sqft · built 1977 · 0.435 acres

Last Sale Tax Bill Prior Sale Owner Records
$287,000Aug 1998 $34,1162025 —Jan 1991 Owner on Record Assessor + 2 DocumentsUpdated Aug 2026

727 1st Ave, Lot 1

980 sqft · built 1940 · 0.864 acres

Last Sale Tax Bill Prior Sale Owner Records
—Jan 2022 —Jan 1999 Owner on Record Assessor + 2 DocumentsUpdated Jun 2026

803 1st Ave

2 bd · 1 ba · 688 sqft · built 1914 · 0.438 acres

Last Sale Tax Bill Prior Sale Owner Records
$65,000Oct 1996 $2,1452025 —Apr 1977 2 Owners on Record AssessorUpdated Jun 2026

809 1st Ave

2 bd · 1 ba · 484 sqft · built 1925 · 0.276 acres

Last Sale Tax Bill Prior Sale Owner Records
$54,000Oct 1996 $1,6472025 Amount on Record Jul 1976 2 Owners on Record AssessorUpdated Jun 2026

815 1st Ave

4 bd · 1 ba · 1,620 sqft · built 1999 · 0.479 acres

Last Sale Tax Bill Prior Sale Owner Records
$106,000May 1998 $1,6142025 2 Owners on Record Owner Occupied AssessorUpdated Jun 2026

825 1st Ave

132 sqft · built 1977 · 0.5 acres

Last Sale Tax Bill Prior Sale Owner Records
$115,000Jul 1999 $18,1422025 Amount on Record Jul 1995 Owner on Record AssessorUpdated Jun 2026

831 1st Ave

2 bd · 1.75 ba · 19,530 sqft · built 1985 · 1.51 acres

Last Sale Tax Bill Prior Sale Owner Records
$2,000,000Feb 2025 $33,1092025 —Nov 1984 Owner on Record Assessor + 1 DocumentUpdated Jun 2026

1025 1st Ave

0.588 acres

Last Sale Tax Bill Prior Sale Owner Records
Owner on Record Owner Occupied AssessorUpdated Jun 2026

1224 1st Ave

3 bd · 1 ba · 960 sqft · built 1965 · 0.164 acres

Last Sale Tax Bill Prior Sale Owner Records
$225,000Mar 2015 $3,3822025 Amount on Record Dec 2014 2 Owners on Record Assessor + 5 DocumentsUpdated Jun 2026

1232 1st Ave

3 bd · 1 ba · 960 sqft · built 1965 · 0.143 acres

Last Sale Tax Bill Prior Sale Owner Records
$82,000Apr 1994 $2,6082025 Amount on Record May 1990 Owner on Record AssessorUpdated Jun 2026

1238 1st Ave

3 bd · 1.5 ba · 912 sqft · built 1966 · 0.136 acres

Last Sale Tax Bill Prior Sale Owner Records
—Jan 1986 $2,7122025 —Aug 1966 Owner on Record Assessor + 1 DocumentUpdated Jun 2026

1244 1st Ave

3 bd · 1 ba · 960 sqft · built 1965 · 0.143 acres

Last Sale Tax Bill Prior Sale Owner Records
$114,750Aug 1998 $2,6462025 Amount on Record Mar 1997 2 Owners on Record Owner Occupied AssessorUpdated Jun 2026

1315 1st Ave

6.32 acres

Last Sale Tax Bill Prior Sale Owner Records
$150,000Jan 1996 $15,0132025 —Nov 1984 Owner on Record Assessor + 1 DocumentUpdated Jun 2026

1400 1st Ave

10 bd · 8.5 ba · 6,616 sqft · built 2003 · 4.21 acres

Last Sale Tax Bill Prior Sale Owner Records
$225,000Oct 1998 $12,7162025 Amount on Record Aug 1992 2 Owners on Record Owner Occupied Assessor + 2 DocumentsUpdated Jun 2026

Property Records in Nearby Streets