Mainsail Dr, Gaithersburg, MD Property Records

Montgomery County property records for 36 addresses on Mainsail Dr, Gaithersburg, MD · Last verified August 2026

Mainsail Dr Highlights

Properties 36
Median Sale Price $660,000
Deeds and Mortgages on File 64
Median Price per Sqft $231
Owner Occupied 100%
Median Annual Tax Bill $6,073
Median Year Built 1986
Median Ownership Tenure 13 years

Properties on Mainsail Dr

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

9800 Mainsail Dr

2.5 ba · 3,468 sqft · built 1986 · 0.564 acres

Last Sale Tax Bill Prior Sale Owner Records
$599,900Oct 2021 $6,0732025 Amount on Record Oct 2018 2 Owners on Record Owner Occupied Assessor + 5 DocumentsUpdated Aug 2026

9801 Mainsail Dr

2.5 ba · 2,364 sqft · built 1987 · 2.11 acres

Last Sale Tax Bill Prior Sale Owner Records
$660,000Nov 2024 $7,3332025 Amount on Record Feb 1987 2 Owners on Record Owner Occupied AssessorUpdated Aug 2026

9804 Mainsail Dr

3 ba · 3,174 sqft · built 1986 · 0.294 acres

Last Sale Tax Bill Prior Sale Owner Records
$614,000May 2021 $6,2802025 Amount on Record Jun 2015 2 Owners on Record Owner Occupied Assessor + 2 DocumentsUpdated Aug 2026

9805 Mainsail Dr

2.5 ba · 2,532 sqft · built 1987 · 0.867 acres

Last Sale Tax Bill Prior Sale Owner Records
$6,2012025 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

9808 Mainsail Dr

3.5 ba · 3,236 sqft · built 1986 · 0.333 acres

Last Sale Tax Bill Prior Sale Owner Records
$500,000Aug 2019 $6,3782025 Amount on Record Sep 2008 Owner on Record Owner Occupied Assessor + 2 DocumentsUpdated Aug 2026

9809 Mainsail Dr

3.5 ba · 3,282 sqft · built 1987 · 0.486 acres

Last Sale Tax Bill Prior Sale Owner Records
$500,000Nov 2019 $6,8082025 Amount on Record Mar 1987 2 Owners on Record Owner Occupied Assessor + 3 DocumentsUpdated Aug 2026

9812 Mainsail Dr

2.5 ba · 2,364 sqft · built 1986 · 0.327 acres

Last Sale Tax Bill Prior Sale Owner Records
$162,700Jan 1987 $6,3832025 2 Owners on Record Owner Occupied Assessor + 2 DocumentsUpdated Aug 2026

9813 Mainsail Dr

3.5 ba · 3,603 sqft · built 1987 · 0.463 acres

Last Sale Tax Bill Prior Sale Owner Records
$685,000May 2022 $5,7402025 Amount on Record Jun 2003 Owner on Record Owner Occupied Assessor + 3 DocumentsUpdated Aug 2026

9816 Mainsail Dr

2.5 ba · 3,468 sqft · built 1986 · 0.34 acres

Last Sale Tax Bill Prior Sale Owner Records
$300,000Apr 2001 $5,6652025 Amount on Record May 1996 Owner on Record Owner Occupied AssessorUpdated Aug 2026

9817 Mainsail Dr

2.5 ba · 2,560 sqft · built 1986 · 0.51 acres

Last Sale Tax Bill Prior Sale Owner Records
$158,500Oct 1986 $5,7002025 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

9820 Mainsail Dr

2.5 ba · 3,120 sqft · built 1986 · 0.31 acres

Last Sale Tax Bill Prior Sale Owner Records
$254,900Sep 1999 $5,7932025 Amount on Record Jan 1998 2 Owners on Record Owner Occupied Assessor + 3 DocumentsUpdated Aug 2026

9821 Mainsail Dr

2.5 ba · 2,532 sqft · built 1986 · 0.477 acres

Last Sale Tax Bill Prior Sale Owner Records
$271,000Dec 1990 $5,7162025 2 Owners on Record Owner Occupied AssessorUpdated Aug 2026

9824 Mainsail Dr

3.5 ba · 3,468 sqft · built 1987 · 0.355 acres

Last Sale Tax Bill Prior Sale Owner Records
$620,000Aug 2021 $6,9532025 Amount on Record May 2009 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

9825 Mainsail Dr

4 ba · 3,360 sqft · built 1987 · 0.488 acres

Last Sale Tax Bill Prior Sale Owner Records
$619,000Jun 2007 $6,0902025 Amount on Record Aug 1994 Owner on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

9828 Mainsail Dr

3 ba · 3,114 sqft · built 1987 · 0.368 acres

Last Sale Tax Bill Prior Sale Owner Records
$450,000Jul 2013 $6,1682025 Amount on Record Aug 2000 Owner on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

9829 Mainsail Dr

2.5 ba · 2,532 sqft · built 1986 · 0.448 acres

Last Sale Tax Bill Prior Sale Owner Records
$629,500Aug 2005 $5,6202025 Amount on Record Nov 1996 2 Owners on Record Owner Occupied Assessor + 2 DocumentsUpdated Aug 2026

9832 Mainsail Dr

2.5 ba · 2,868 sqft · built 1987 · 0.368 acres

Last Sale Tax Bill Prior Sale Owner Records
$697,000Jun 2023 $6,1582025 Amount on Record Jun 1998 2 Owners on Record Owner Occupied Assessor + 3 DocumentsUpdated Aug 2026

9833 Mainsail Dr

3.5 ba · 3,126 sqft · built 1986 · 0.478 acres

Last Sale Tax Bill Prior Sale Owner Records
$452,500Jan 2019 $5,8712025 2 Owners on Record Owner Occupied Assessor + 3 DocumentsUpdated Aug 2026

9836 Mainsail Dr

3.5 ba · 3,714 sqft · built 1987 · 0.299 acres

Last Sale Tax Bill Prior Sale Owner Records
$490,000Apr 2019 $6,1192025 Amount on Record Mar 2018 2 Owners on Record Owner Occupied Assessor + 4 DocumentsUpdated Aug 2026

9837 Mainsail Dr

2.5 ba · 2,845 sqft · built 1986 · 0.585 acres

Last Sale Tax Bill Prior Sale Owner Records
—May 2002 $6,0602025 Amount on Record Dec 1993 2 Owners on Record Owner Occupied Assessor + 3 DocumentsUpdated Aug 2026

9840 Mainsail Dr

3 ba · 3,220 sqft · built 1987 · 0.314 acres

Last Sale Tax Bill Prior Sale Owner Records
$510,000Jun 2004 $5,8702025 Owner on Record Owner Occupied Assessor + 4 DocumentsUpdated Aug 2026

9841 Mainsail Dr

4 ba · 3,096 sqft · built 1986 · 0.497 acres

Last Sale Tax Bill Prior Sale Owner Records
$335,000Mar 2002 $5,8652025 Amount on Record Feb 1999 2 Owners on Record Owner Occupied Assessor + 3 DocumentsUpdated Aug 2026

9844 Mainsail Dr

2.5 ba · 2,364 sqft · built 1987 · 0.327 acres

Last Sale Tax Bill Prior Sale Owner Records
$382,000Nov 2002 $5,5732025 2 Owners on Record Owner Occupied AssessorUpdated Aug 2026

9845 Mainsail Dr

3 ba · 3,310 sqft · built 1987 · 0.451 acres

Last Sale Tax Bill Prior Sale Owner Records
$490,000May 2018 $6,2782025 Amount on Record Aug 2009 Owner on Record Owner Occupied Assessor + 2 DocumentsUpdated Aug 2026

9848 Mainsail Dr

3.5 ba · 3,468 sqft · built 1987 · 0.338 acres

Last Sale Tax Bill Prior Sale Owner Records
$519,999Dec 2019 $7,1772025 2 Owners on Record Owner Occupied Assessor + 4 DocumentsUpdated Aug 2026

9852 Mainsail Dr

3.5 ba · 2,764 sqft · built 1986 · 0.289 acres

Last Sale Tax Bill Prior Sale Owner Records
$730,000May 2026 $6,7472025 Amount on Record Nov 2021 Owner on Record Owner Occupied Assessor + 2 DocumentsUpdated Aug 2026

9856 Mainsail Dr

3.5 ba · 3,718 sqft · built 1986 · 0.26 acres

Last Sale Tax Bill Prior Sale Owner Records
$660,000Apr 2022 $6,9772025 Amount on Record Oct 2000 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

9900 Mainsail Dr

2.5 ba · 2,560 sqft · built 1986 · 0.244 acres

Last Sale Tax Bill Prior Sale Owner Records
$441,900Oct 2004 $5,5752025 Owner on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

9904 Mainsail Dr

2.5 ba · 2,532 sqft · built 1986 · 0.244 acres

Last Sale Tax Bill Prior Sale Owner Records
—Jun 2002 $6,5352025 Amount on Record Jun 1996 Owner on Record Owner Occupied AssessorUpdated Aug 2026

9905 Mainsail Dr

2.5 ba · 2,553 sqft · built 1986 · 0.26 acres

Last Sale Tax Bill Prior Sale Owner Records
$625,000Dec 2021 $5,5072025 —Apr 2000 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

9908 Mainsail Dr

3 ba · 2,760 sqft · built 1986 · 0.244 acres

Last Sale Tax Bill Prior Sale Owner Records
$640,000Mar 2023 $5,4682025 Amount on Record Apr 1993 2 Owners on Record Owner Occupied Assessor + 2 DocumentsUpdated Aug 2026

9909 Mainsail Dr

3.5 ba · 3,116 sqft · built 1986 · 0.244 acres

Last Sale Tax Bill Prior Sale Owner Records
$490,000Mar 2019 $7,0652025 Amount on Record May 2012 2 Owners on Record Owner Occupied Assessor + 3 DocumentsUpdated Aug 2026

9912 Mainsail Dr

2.5 ba · 3,132 sqft · built 1986 · 0.308 acres

Last Sale Tax Bill Prior Sale Owner Records
$269,000Aug 1999 $5,6172025 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

9913 Mainsail Dr

2.5 ba · 2,964 sqft · built 1986 · 0.234 acres

Last Sale Tax Bill Prior Sale Owner Records
$153,400Dec 1986 $5,7362025 2 Owners on Record Owner Occupied AssessorUpdated Aug 2026

9917 Mainsail Dr

3.5 ba · 3,468 sqft · built 1986 · 0.239 acres

Last Sale Tax Bill Prior Sale Owner Records
$358,895Jul 2002 $5,5352025 2 Owners on Record Owner Occupied AssessorUpdated Aug 2026

9921 Mainsail Dr

2.5 ba · 2,540 sqft · built 1986 · 0.251 acres

Last Sale Tax Bill Prior Sale Owner Records
$207,000Feb 1988 $5,3242025 2 Owners on Record Owner Occupied AssessorUpdated Aug 2026

Property Records in Nearby Streets