S Mason St, Fort Collins, CO Property Records

Larimer County property records for 73 addresses on S Mason St, Fort Collins, CO · Last verified August 2026

S Mason St Highlights

Properties 73
Median Sale Price $1,618,750
Deeds and Mortgages on File 88
Median Price per Sqft $312
Owner Occupied 15%
Median Annual Tax Bill $25,034
Median Year Built 1986
Median Ownership Tenure 13 years

Properties on S Mason St

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

144 S Mason St

6,230 sqft · Built 1925 · 0.142 acres

Last Sale Tax Bill Prior Sale Owner Records
$900,000Nov 2013 $74,8332025 1 Name on Record AssessorUpdated Feb 2026

401 S Mason St

1,849 sqft · Built 1888 · 0.064 acres

Last Sale Tax Bill Prior Sale Owner Records
$449,000Dec 2014 $14,6222024 Sale Amount Jul 2007 1 Name on Record Assessor + 1 DocumentUpdated Aug 2026

415 S Mason St

4,168 sqft · Built 1960 · 0.298 acres

Last Sale Tax Bill Prior Sale Owner Records
$2,150,000Apr 2022 $53,7442025 —Dec 2011 1 Name on Record Assessor + 2 DocumentsUpdated Feb 2026

423 S Mason St

2 bd · 2 ba · 3,664 sqft · 0.128 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$298,000May 2010 $8,0572024 Sale Amount Jun 1993 1 Name on Record Assessor + 1 DocumentUpdated Aug 2026

429 S Mason St

1,316 sqft · Built 1960 · 0.33 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,200,000Jan 2021 $3,6792025 1 Name on Record Assessor + 1 DocumentUpdated Feb 2026

505 S Mason St, #100

124 bd · 59,547 sqft · 0.683 acres

Last Sale Tax Bill Prior Sale Owner Records
$14,250,000Jan 2015 $127,1362025 1 Name on Record Assessor + 1 DocumentUpdated Feb 2026

604 S Mason St

3,140 sqft · Built 1978 · 0.252 acres

Last Sale Tax Bill Prior Sale Owner Records
$372,000Feb 2007 $22,3732025 Sale Amount Oct 1971 1 Name on Record Assessor + 1 DocumentUpdated Jun 2026

605 S Mason St

3 bd · 1.5 ba · 4,164 sqft · 0.42 acres

Last Sale Tax Bill Prior Sale Owner Records
—Apr 2003 $28,2662025 1 Name on Record Owner Occupied AssessorUpdated Feb 2026

615 S Mason St

24 bd · 24 ba · 11,022 sqft · 0.218 acres

Last Sale Tax Bill Prior Sale Owner Records
—Jun 1993 $13,4522025 —Jan 2018 1 Name on Record Assessor + 3 DocumentsUpdated Aug 2026

616 S Mason St

4 bd · 1 ba · 798 sqft · 0.219 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$285,000Feb 2007 $2,9232025 —Jan 2010 1 Name on Record Assessor + 3 DocumentsUpdated Feb 2026

622 S Mason St

3 bd · 1 ba · 847 sqft · 0.16 acres

Last Sale Tax Bill Prior Sale Owner Records
$285,000Feb 2007 $2,7752025 —Sep 2010 1 Name on Record Assessor + 1 DocumentUpdated Feb 2026

625 S Mason St

6,678 sqft · Built 1980 · 0.439 acres

Last Sale Tax Bill Prior Sale Owner Records
$525,000May 2004 $48,8212025 1 Name on Record Assessor + 1 DocumentUpdated Feb 2026

628 S Mason St

3 bd · 1 ba · 867 sqft · 0.16 acres

Last Sale Tax Bill Prior Sale Owner Records
$385,000Dec 2021 $2,5822025 1 Name on Record Owner Occupied Assessor + 1 DocumentUpdated Feb 2026

630 S Mason St

2 bd · 1 ba · 720 sqft · 0.141 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,618,750Nov 2021 $2,3492024 Sale Amount May 2011 1 Name on Record Assessor + 4 DocumentsUpdated Aug 2026

631 S Mason St

Built 1983 · 0.269 acres

Last Sale Tax Bill Prior Sale Owner Records
—Mar 2006 $1,2892025 1 Name on Record AssessorUpdated Feb 2026

632 S Mason St

7,125 sqft · Built 1988 · 0.185 acres

Last Sale Tax Bill Prior Sale Owner Records
$865,000Dec 2008 $17,2912024 Sale Amount Feb 1988 1 Name on Record Assessor + 2 DocumentsUpdated May 2026

634 S Mason St

2,250 sqft · Built 1900 · 0.15 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,850,000Dec 2019 $15,2092025 —Oct 1997 1 Name on Record Assessor + 2 DocumentsUpdated Feb 2026

635 S Mason St

5 bd · 3 ba · 1,627 sqft · 0.11 acres

Last Sale Tax Bill Prior Sale Owner Records
—Mar 2006 $2,4912025 1 Name on Record AssessorUpdated Feb 2026

639 S Mason St

0.109 acres

Last Sale Tax Bill Prior Sale Owner Records
$350,000Dec 2019 $1,9072024 Sale Amount Mar 1998 1 Name on Record Assessor + 1 DocumentUpdated Apr 2026

3431 S Mason St

7,518 sqft · Built 1969 · 0.439 acres

Last Sale Tax Bill Prior Sale Owner Records
$500,000Oct 2001 $26,4332025 1 Name on Record AssessorUpdated Feb 2026

3432 S Mason St

4,725 sqft · Built 1973 · 0.25 acres

Last Sale Tax Bill Prior Sale Owner Records
$18,0132025 —Feb 2021 1 Name on Record Assessor + 2 DocumentsUpdated Feb 2026

3501 S Mason St

11,150 sqft · Built 1972 · 0.685 acres

Last Sale Tax Bill Prior Sale Owner Records
$40,2032024 1 Name on Record Assessor + 1 DocumentUpdated Apr 2026

3509 S Mason St

13,500 sqft · Built 1977 · 0.689 acres

Last Sale Tax Bill Prior Sale Owner Records
$169,304,700Dec 2022 $55,8792025 Sale Amount Aug 2021 1 Name on Record Assessor + 4 DocumentsUpdated Jun 2026

3516 S Mason St

4,400 sqft · Built 1973 · 0.39 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,375,000Feb 2024 $15,4322024 Sale Amount Dec 1997 1 Name on Record Assessor + 4 DocumentsUpdated Aug 2026

3517 S Mason St

0.45 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,600,000May 2007 $5,4522022 1 Name on Record AssessorUpdated Feb 2024

3521 S Mason St

6,460 sqft · Built 1982 · 0.43 acres

Last Sale Tax Bill Prior Sale Owner Records
$669,000Oct 2006 $27,9412025 Sale Amount Jul 1998 1 Name on Record AssessorUpdated Feb 2026

3524 S Mason St

5,231 sqft · Built 1977 · 0.41 acres

Last Sale Tax Bill Prior Sale Owner Records
$6,985Dec 2007 $24,1312025 Sale Amount Dec 2004 1 Name on Record AssessorUpdated Feb 2026

3536 S Mason St

8,000 sqft · Built 1978 · 0.41 acres

Last Sale Tax Bill Prior Sale Owner Records
$41,3302025 1 Name on Record AssessorUpdated Feb 2026

3701 S Mason St

6,940 sqft · Built 1994 · 0.673 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,565,000May 2025 $33,8812025 Sale Amount Apr 2008 1 Name on Record Owner Occupied Assessor + 1 DocumentUpdated Feb 2026

3713 S Mason St

4,440 sqft · Built 1993 · 0.7 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,054,500Dec 2023 $24,4532025 —Jun 2021 1 Name on Record Owner Occupied Assessor + 6 DocumentsUpdated Feb 2026

3725 S Mason St

2 ba · 5,030 sqft · 0.737 acres

Last Sale Tax Bill Prior Sale Owner Records
$45,000Jul 1992 $25,0342025 1 Name on Record AssessorUpdated Aug 2026

3737 S Mason St

4,644 sqft · Built 1995 · 0.73 acres

Last Sale Tax Bill Prior Sale Owner Records
$65,000Nov 1993 $32,1392025 2 Names on Record Owner Occupied AssessorUpdated Feb 2026

3749 S Mason St

2 ba · 9,368 sqft · 0.689 acres

Last Sale Tax Bill Prior Sale Owner Records
$70,000Mar 1994 $31,5662023 1 Name on Record Assessor + 1 DocumentUpdated Feb 2026

3750 S Mason St

50,822 sqft · Built 2019 · 1.18 acres

Last Sale Tax Bill Prior Sale Owner Records
$3,075,000Sep 2019 $275,0872023 Sale Amount Jan 2018 1 Name on Record Owner Occupied AssessorUpdated Feb 2026

3761 S Mason St

10,600 sqft · Built 1996 · 0.619 acres

Last Sale Tax Bill Prior Sale Owner Records
$850,000Feb 2010 $47,7692025 1 Name on Record Owner Occupied AssessorUpdated Feb 2026

3800 S Mason St

1 sqft · Built 1982 · 1.39 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$1,040,000May 2026 1 Name on Record Assessor + 8 DocumentsUpdated Jun 2026

3801 S Mason St

17,533 sqft · Built 1993 · 1.87 acres

Last Sale Tax Bill Prior Sale Owner Records
—Mar 2021 $90,2322024 —May 1992 1 Name on Record Assessor + 2 DocumentsUpdated May 2026

3842 S Mason St

22,434 sqft · Built 1984 · 1.51 acres

Last Sale Tax Bill Prior Sale Owner Records
$4,585,000Aug 2014 $77,7552024 —Oct 1993 2 Names on Record AssessorUpdated Apr 2026

3847 S Mason St

2 ba · 10,344 sqft · 0.994 acres

Last Sale Tax Bill Prior Sale Owner Records
$20,420Nov 1996 $48,4542024 Sale Amount Aug 1992 1 Name on Record AssessorUpdated May 2026

3901 S Mason St

8,336 sqft · Built 1995 · 1.05 acres

Last Sale Tax Bill Prior Sale Owner Records
$780,000Jan 1999 $30,6212023 1 Name on Record Owner Occupied AssessorUpdated Feb 2026

3935 S Mason St

0.536 acres

Last Sale Tax Bill Prior Sale Owner Records
$95,000Jul 1996 $3142024 —Jan 1996 1 Name on Record AssessorUpdated May 2026

4001 S Mason St

38,221 sqft · Built 1997 · 1.3 acres · Pool

Last Sale Tax Bill Prior Sale Owner Records
$3,300,000Aug 2020 $87,8782025 —Dec 2010 1 Name on Record AssessorUpdated Feb 2026

4018 S Mason St

0.501 acres

Last Sale Tax Bill Prior Sale Owner Records
$5,8522024 1 Name on Record AssessorUpdated May 2026

4019 S Mason St

13,474 sqft · Built 2004 · 1.23 acres

Last Sale Tax Bill Prior Sale Owner Records
$57,5842025 1 Name on Record AssessorUpdated Feb 2026

4024 S Mason St

0.86 acres

Last Sale Tax Bill Prior Sale Owner Records
—Mar 1995 $5,6332025 1 Name on Record AssessorUpdated Feb 2026

4025 S Mason St

15,385 sqft · Built 1984 · 1.3 acres

Last Sale Tax Bill Prior Sale Owner Records
$2,615,000Aug 2026 $12,2812025 Sale Amount Oct 2008 1 Name on Record Assessor + 2 DocumentsUpdated Aug 2026

4103 S Mason St, #100

2 ba · 5,680 sqft · 0.492 acres

Last Sale Tax Bill Prior Sale Owner Records
$25,6082024 1 Name on Record Assessor + 3 DocumentsUpdated May 2026

4103 S Mason St, #200

8,515 sqft · Built 1997 · 0.737 acres

Last Sale Tax Bill Prior Sale Owner Records
$922,845Jul 2012 $35,7782025 1 Name on Record Assessor + 1 DocumentUpdated Feb 2026

4211 S Mason St, #300

10,570 sqft · Built 1989 · 0.915 acres

Last Sale Tax Bill Prior Sale Owner Records
$41,2352024 1 Name on Record Assessor + 3 DocumentsUpdated May 2026

4217 S Mason St

2 ba · 11,760 sqft · 0.715 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,800,000Jun 2018 $50,3222025 —Jun 2018 1 Name on Record AssessorUpdated Jun 2026

4221 S Mason St

3,600 sqft · Built 1997 · 0.181 acres

Last Sale Tax Bill Prior Sale Owner Records
—Mar 2017 $17,6632025 Sale Amount Nov 2016 1 Name on Record Assessor + 1 DocumentUpdated Feb 2026

4223 S Mason St

6,000 sqft · Built 1997 · 0.416 acres

Last Sale Tax Bill Prior Sale Owner Records
$710,000Sep 2013 $24,8392024 1 Name on Record Assessor + 1 DocumentUpdated Apr 2026

4229 S Mason St

1 ba · 4,400 sqft · 0.344 acres

Last Sale Tax Bill Prior Sale Owner Records
$75,000Feb 1986 $20,0272024 1 Name on Record Assessor + 1 DocumentUpdated Apr 2026

4235 S Mason St

0.105 acres

Last Sale Tax Bill Prior Sale Owner Records
$310,000Jun 1994 $1,2292024 1 Name on Record Assessor + 4 DocumentsUpdated Apr 2026

4245 S Mason St

3,906 sqft · Built 1983 · 0.38 acres

Last Sale Tax Bill Prior Sale Owner Records
$28,4762025 1 Name on Record Assessor + 1 DocumentUpdated Feb 2026

4257 S Mason St

3,432 sqft · Built 2002 · 0.3 acres

Last Sale Tax Bill Prior Sale Owner Records
$23,2852025 Sale Amount May 1998 1 Name on Record AssessorUpdated Feb 2026

4263 S Mason St

3,040 sqft · Built 1983 · 0.36 acres

Last Sale Tax Bill Prior Sale Owner Records
$23,0232025 1 Name on Record AssessorUpdated Feb 2026

4315 S Mason St

11,508 sqft · Built 1985 · 1.23 acres

Last Sale Tax Bill Prior Sale Owner Records
$2,400,000Jul 2008 $55,8332024 —Mar 2008 1 Name on Record Assessor + 3 DocumentsUpdated Apr 2026

4321 S Mason St

5,840 sqft · Built 2000 · 1.26 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,800,000Jan 2020 $21,9862020 1 Name on Record Assessor + 1 DocumentUpdated Jun 2023

4455 S Mason St

4 ba · 42,287 sqft · 4.79 acres

Last Sale Tax Bill Prior Sale Owner Records
$266,0092025 1 Name on Record Owner Occupied AssessorUpdated Feb 2026

4512 S Mason St

4,292 sqft · Built 1995 · 0.55 acres

Last Sale Tax Bill Prior Sale Owner Records
$700,000Oct 2014 $29,7262025 1 Name on Record Assessor + 1 DocumentUpdated Feb 2026

4524 S Mason St

0.489 acres

Last Sale Tax Bill Prior Sale Owner Records
—Sep 2000 $5,4252025 1 Name on Record AssessorUpdated Feb 2026

4600 S Mason St

2,911 sqft · Built 2006 · 0.936 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,613,467Mar 2018 $36,3192024 1 Name on Record Assessor + 1 DocumentUpdated May 2026

4606 S Mason St

11,554 sqft · Built 1989 · 0.259 acres

Last Sale Tax Bill Prior Sale Owner Records
$3,000,000Mar 2021 $86,4222024 1 Name on Record Assessor + 1 DocumentUpdated Apr 2026

4612 S Mason St

6,341 sqft · Built 2001 · 0.75 acres

Last Sale Tax Bill Prior Sale Owner Records
$875,000Apr 2013 $28,8662023 1 Name on Record Owner Occupied Assessor + 2 DocumentsUpdated Feb 2026

4619 S Mason St

31,006 sqft · Built 1986 · 3.2 acres

Last Sale Tax Bill Prior Sale Owner Records
$6,189,648Mar 2018 $118,5912024 —May 1989 1 Name on Record Assessor + 1 DocumentUpdated May 2026

4624 S Mason St

3,115 sqft · Built 1996 · 0.78 acres

Last Sale Tax Bill Prior Sale Owner Records
$17,2212025 1 Name on Record Assessor + 1 DocumentUpdated Feb 2026

4625 S Mason St

86,904 sqft · Built 1986 · 7.58 acres

Last Sale Tax Bill Prior Sale Owner Records
$24,0632025 —May 2002 1 Name on Record AssessorUpdated Feb 2026

4636 S Mason St

10,000 sqft · Built 1995 · 0.96 acres

Last Sale Tax Bill Prior Sale Owner Records
$94,3832025 1 Name on Record Assessor + 1 DocumentUpdated Feb 2026

4637 S Mason St, #A6

20,740 sqft · Built 1986 · 1.91 acres

Last Sale Tax Bill Prior Sale Owner Records
$4,209,648Mar 2018 $78,7882024 1 Name on Record Assessor + 1 DocumentUpdated May 2026

4643 S Mason St

2,942 sqft · Built 1990 · 0.33 acres

Last Sale Tax Bill Prior Sale Owner Records
—Jun 1995 $24,4062025 1 Name on Record AssessorUpdated Feb 2026

4818 S Mason St

0.134 acres

Last Sale Tax Bill Prior Sale Owner Records
$132023 —Sep 2018 1 Name on Record Assessor + 4 DocumentsUpdated Feb 2026

5125 S Mason St

4 bd · 2 ba · 1,418 sqft · 0.06 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$5992023 2 Names on Record Owner Occupied AssessorUpdated Feb 2026

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