Hallmark Ct, Gaithersburg, MD Property Records

Montgomery County property records for 68 addresses on Hallmark Ct, Gaithersburg, MD · Last verified August 2026

Hallmark Ct Highlights

Properties 68
Median Sale Price $415,500
Deeds and Mortgages on File 69
Median Price per Sqft $214
Owner Occupied 96%
Median Annual Tax Bill $4,266
Median Year Built 1986
Median Ownership Tenure 14 years

Properties on Hallmark Ct

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

18300 Hallmark Ct

3 ba · 1,806 sqft · 0.043 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$308,000May 2004 $4,0152025 Amount on Record Jul 1997 1 Name on Record Owner Occupied AssessorUpdated Aug 2026

18301 Hallmark Ct

3 ba · 1,806 sqft · 0.036 acres

Last Sale Tax Bill Prior Sale Owner Records
$430,000Mar 2022 $4,7062025 Amount on Record Oct 2015 1 Name on Record Assessor + 1 DocumentUpdated Aug 2026

18302 Hallmark Ct

2.5 ba · 1,912 sqft · 0.037 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$136,000Apr 1998 $4,6942025 1 Name on Record Owner Occupied AssessorUpdated Aug 2026

18303 Hallmark Ct

3 ba · 1,956 sqft · 0.035 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$352,000May 2020 $4,9582025 Amount on Record Sep 2011 1 Name on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

18304 Hallmark Ct

2.5 ba · 1,912 sqft · 0.037 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$385,000Jan 2023 $4,8052025 Amount on Record Jul 2013 1 Name on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

18305 Hallmark Ct

3 ba · 1,806 sqft · 0.035 acres

Last Sale Tax Bill Prior Sale Owner Records
$143,000Mar 1993 $4,6042025 2 Names on Record Owner Occupied AssessorUpdated Aug 2026

18306 Hallmark Ct

2.5 ba · 1,912 sqft · 0.037 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$280,000Apr 2004 $4,6942025 1 Name on Record Assessor + 1 DocumentUpdated Aug 2026

18307 Hallmark Ct

3 ba · 1,806 sqft · 0.035 acres

Last Sale Tax Bill Prior Sale Owner Records
$345,000Apr 2019 $4,7642025 2 Names on Record Owner Occupied Assessor + 2 DocumentsUpdated Aug 2026

18308 Hallmark Ct

2.5 ba · 1,832 sqft · 0.037 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$145,000Mar 2000 $4,6102025 1 Name on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

18309 Hallmark Ct

3 ba · 2,006 sqft · 0.035 acres

Last Sale Tax Bill Prior Sale Owner Records
$320,000Sep 2016 $5,0182025 Amount on Record Dec 1999 2 Names on Record Owner Occupied AssessorUpdated Aug 2026

18310 Hallmark Ct

3 ba · 2,002 sqft · 0.037 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$300,000Dec 2013 $4,2162025 Amount on Record Aug 1987 1 Name on Record Owner Occupied AssessorUpdated Aug 2026

18311 Hallmark Ct

3 ba · 1,956 sqft · 0.035 acres

Last Sale Tax Bill Prior Sale Owner Records
$370,000May 2020 $4,2662025 Amount on Record Jul 2014 1 Name on Record Owner Occupied Assessor + 2 DocumentsUpdated Aug 2026

18312 Hallmark Ct

3 ba · 1,806 sqft · 0.037 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$370,000Dec 2020 $4,2682025 Amount on Record May 2010 2 Names on Record Owner Occupied Assessor + 2 DocumentsUpdated Aug 2026

18313 Hallmark Ct

3 ba · 1,806 sqft · 0.036 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$460,000Jun 2025 $3,9962025 Amount on Record Aug 2018 1 Name on Record Owner Occupied Assessor + 2 DocumentsUpdated Aug 2026

18314 Hallmark Ct

2 ba · 1,912 sqft · 0.043 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$403,900Dec 2006 $4,7202025 Amount on Record Jun 2004 1 Name on Record Owner Occupied AssessorUpdated Aug 2026

18317 Hallmark Ct

3 ba · 1,806 sqft · 0.036 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$465,000Aug 2025 $3,3392025 Amount on Record Jul 1996 2 Names on Record Owner Occupied AssessorUpdated Aug 2026

18319 Hallmark Ct

3 ba · 1,806 sqft · 0.035 acres

Last Sale Tax Bill Prior Sale Owner Records
$133,000May 1989 $3,9722025 2 Names on Record Owner Occupied AssessorUpdated Aug 2026

18321 Hallmark Ct

3 ba · 1,806 sqft · 0.035 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$136,000May 1999 $3,9462025 Amount on Record Oct 1994 1 Name on Record Owner Occupied AssessorUpdated Aug 2026

18323 Hallmark Ct

3 ba · 1,806 sqft · 0.035 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$325,000May 2008 $4,5872025 Amount on Record Feb 2004 1 Name on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

18325 Hallmark Ct

3 ba · 1,806 sqft · 0.035 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$334,900Aug 2018 $3,9462025 Amount on Record May 2005 2 Names on Record Owner Occupied Assessor + 2 DocumentsUpdated Aug 2026

18327 Hallmark Ct

3 ba · 1,806 sqft · 0.035 acres

Last Sale Tax Bill Prior Sale Owner Records
$244,000Jun 2009 $3,9462025 Amount on Record Dec 2008 1 Name on Record Owner Occupied AssessorUpdated Aug 2026

18329 Hallmark Ct

3 ba · 1,806 sqft · 0.036 acres

Last Sale Tax Bill Prior Sale Owner Records
$355,000Aug 2022 $4,6882025 Amount on Record Nov 1990 1 Name on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

18333 Hallmark Ct

3 ba · 1,806 sqft · 0.035 acres

Last Sale Tax Bill Prior Sale Owner Records
$441,000Jul 2022 $4,1772025 Amount on Record Jun 2019 2 Names on Record Owner Occupied Assessor + 3 DocumentsUpdated Aug 2026

18335 Hallmark Ct

3 ba · 1,806 sqft · 0.032 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$140,000May 1996 $3,9462025 1 Name on Record Owner Occupied Assessor + 3 DocumentsUpdated Aug 2026

18337 Hallmark Ct

3 ba · 1,806 sqft · 0.032 acres

Last Sale Tax Bill Prior Sale Owner Records
$159,500Nov 2000 $3,9462025 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

18339 Hallmark Ct

3 ba · 1,806 sqft · 0.032 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$263,000Jan 2013 $4,6382025 Amount on Record Jul 1993 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

18341 Hallmark Ct

3 ba · 1,806 sqft · 0.032 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$280,000Nov 2012 $4,6382025 Amount on Record Feb 1993 1 Name on Record Owner Occupied AssessorUpdated Aug 2026

18343 Hallmark Ct

3 ba · 1,806 sqft · 0.032 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$305,000Feb 2005 $3,9122025 Amount on Record Dec 2003 2 Names on Record Owner Occupied AssessorUpdated Aug 2026

18344 Hallmark Ct

3 ba · 1,806 sqft · 0.039 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$307,000Jun 2004 $3,9042025 2 Names on Record Owner Occupied AssessorUpdated Aug 2026

18345 Hallmark Ct

3 ba · 1,806 sqft · 0.029 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$169,160Feb 2002 $3,9962025 Amount on Record Oct 2001 1 Name on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

18346 Hallmark Ct

2.5 ba · 1,912 sqft · 0.037 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$436,000Mar 2022 $4,7652025 Amount on Record Feb 2015 1 Name on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

18348 Hallmark Ct

2.5 ba · 1,936 sqft · 0.037 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$103,200May 1987 $4,7282025 1 Name on Record Owner Occupied AssessorUpdated Aug 2026

18349 Hallmark Ct

3 ba · 1,806 sqft · 0.034 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$374,990Mar 2007 $3,9962025 Amount on Record Feb 2002 1 Name on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

18350 Hallmark Ct

3 ba · 1,806 sqft · 0.037 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$106,737May 2023 $4,6312025 Amount on Record Jul 2015 2 Names on Record Owner Occupied Assessor + 3 DocumentsUpdated Aug 2026

18351 Hallmark Ct

3 ba · 1,806 sqft · 0.032 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
—Aug 2005 $4,6502025 1 Name on Record Owner Occupied AssessorUpdated Aug 2026

18352 Hallmark Ct

3 ba · 2,006 sqft · 0.037 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$420,000Jan 2024 $4,3982025 Amount on Record Jan 2017 2 Names on Record Owner Occupied Assessor + 2 DocumentsUpdated Aug 2026

18353 Hallmark Ct

3 ba · 1,806 sqft · 0.032 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$340,000Oct 2017 $3,9462025 Amount on Record May 2001 2 Names on Record Owner Occupied Assessor + 2 DocumentsUpdated Aug 2026

18354 Hallmark Ct

2.5 ba · 1,936 sqft · 0.037 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$280,000Mar 2009 $4,0282025 1 Name on Record Owner Occupied AssessorUpdated Aug 2026

18355 Hallmark Ct

3 ba · 1,806 sqft · 0.032 acres

Last Sale Tax Bill Prior Sale Owner Records
$142,000Jun 1992 $3,9462025 2 Names on Record Owner Occupied Assessor + 2 DocumentsUpdated Aug 2026

18356 Hallmark Ct

3.5 ba · 2,086 sqft · 0.043 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$370,000Dec 2020 $5,1992025 Amount on Record May 2004 1 Name on Record Owner Occupied Assessor + 2 DocumentsUpdated Aug 2026

18357 Hallmark Ct

1.5 ba · 1,200 sqft · 0.032 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$12,312,229Mar 1999 1 Name on Record Owner Occupied AssessorUpdated Aug 2026

18359 Hallmark Ct

3 ba · 1,806 sqft · 0.032 acres

Last Sale Tax Bill Prior Sale Owner Records
$260,000Dec 2009 $4,6382025 Amount on Record Mar 2007 1 Name on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

18361 Hallmark Ct

3 ba · 1,806 sqft · 0.032 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$250,000May 2011 $3,9122025 1 Name on Record Owner Occupied AssessorUpdated Aug 2026

18363 Hallmark Ct

3 ba · 1,806 sqft · 0.034 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$245,000Jun 2013 $3,9962025 —Apr 2009 2 Names on Record Owner Occupied Assessor + 2 DocumentsUpdated Aug 2026

18401 Hallmark Ct

3 ba · 1,806 sqft · 0.034 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$144,500Sep 1999 $4,6382025 1 Name on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

18403 Hallmark Ct

3.5 ba · 1,956 sqft · 0.032 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$310,000Oct 2016 $4,3322025 Amount on Record Feb 2012 1 Name on Record Owner Occupied AssessorUpdated Aug 2026

18405 Hallmark Ct

3 ba · 1,806 sqft · 0.032 acres

Last Sale Tax Bill Prior Sale Owner Records
$415,500Mar 2023 $4,7482025 —Oct 2008 1 Name on Record Owner Occupied Assessor + 2 DocumentsUpdated Aug 2026

18407 Hallmark Ct

3 ba · 1,806 sqft · 0.032 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$284,900Jun 2010 $3,6062025 Amount on Record Jul 1998 1 Name on Record Owner Occupied AssessorUpdated Aug 2026

18409 Hallmark Ct

1.5 ba · 1,200 sqft · 0.029 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
—Nov 2006 $3,2762025 —Jan 2006 1 Name on Record Owner Occupied AssessorUpdated Aug 2026

18411 Hallmark Ct

3.5 ba · 1,806 sqft · 0.032 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$285,000Feb 2017 $4,6502025 Amount on Record Mar 2009 2 Names on Record Assessor + 1 DocumentUpdated Aug 2026

18412 Hallmark Ct

2.5 ba · 1,806 sqft · 0.043 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$420,000Nov 2022 $4,0792025 Amount on Record Oct 2010 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

18413 Hallmark Ct

3 ba · 1,806 sqft · 0.032 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$341,500Jan 2020 $4,1752025 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

18414 Hallmark Ct

2.5 ba · 1,756 sqft · 0.037 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$376,900Feb 2021 $3,9602025 Amount on Record Jun 2019 1 Name on Record Owner Occupied Assessor + 3 DocumentsUpdated Aug 2026

18415 Hallmark Ct

3 ba · 1,956 sqft · 0.034 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$510,000Nov 2024 $4,8692025 Amount on Record Apr 2018 1 Name on Record Owner Occupied Assessor + 2 DocumentsUpdated Aug 2026

18416 Hallmark Ct

2.5 ba · 1,806 sqft · 0.037 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$3,8512025 1 Name on Record Owner Occupied AssessorUpdated Aug 2026

18418 Hallmark Ct

2.5 ba · 1,856 sqft · 0.037 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$320,000Jun 2017 $4,1902025 Amount on Record Feb 2016 2 Names on Record Owner Occupied Assessor + 2 DocumentsUpdated Aug 2026

18419 Hallmark Ct

3 ba · 1,956 sqft · 0.033 acres

Last Sale Tax Bill Prior Sale Owner Records
$425,000Dec 2021 $4,9632025 Amount on Record Nov 2016 1 Name on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

18420 Hallmark Ct

2.5 ba · 1,806 sqft · 0.037 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$218,500Aug 2011 $3,8852025 Amount on Record May 2002 1 Name on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

18421 Hallmark Ct

3 ba · 1,806 sqft · 0.033 acres

Last Sale Tax Bill Prior Sale Owner Records
$133,500Feb 1993 $3,9312025 2 Names on Record Owner Occupied AssessorUpdated Aug 2026

18422 Hallmark Ct

2.5 ba · 1,806 sqft · 0.037 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
—Jul 2004 $3,8512025 1 Name on Record Owner Occupied Assessor + 3 DocumentsUpdated Aug 2026

18423 Hallmark Ct

3 ba · 1,806 sqft · 0.034 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$352,000Jun 2022 $4,5882025 —Mar 1998 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

18424 Hallmark Ct

2.5 ba · 1,806 sqft · 0.037 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$250,000Dec 2016 $4,4792025 Amount on Record Nov 2011 1 Name on Record Owner Occupied AssessorUpdated Aug 2026

18425 Hallmark Ct

3 ba · 1,806 sqft · 0.035 acres

Last Sale Tax Bill Prior Sale Owner Records
$265,000Dec 2003 $4,6232025 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

18426 Hallmark Ct

2.5 ba · 1,806 sqft · 0.043 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$252,000Jun 2012 $4,5942025 Amount on Record — 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

18427 Hallmark Ct

3 ba · 1,806 sqft · 0.036 acres

Last Sale Tax Bill Prior Sale Owner Records
$3,9312025 2 Names on Record Owner Occupied AssessorUpdated Aug 2026

18429 Hallmark Ct

3 ba · 1,806 sqft · 0.037 acres

Last Sale Tax Bill Prior Sale Owner Records
$262,000Nov 2013 $4,5882025 Amount on Record Sep 2004 2 Names on Record Owner Occupied Assessor + 3 DocumentsUpdated Aug 2026

18431 Hallmark Ct

1.5 ba · 1,550 sqft · 0.032 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$225,000Nov 2010 $3,4362025 Amount on Record Jun 2004 2 Names on Record Owner Occupied Assessor + 3 DocumentsUpdated Aug 2026

18433 Hallmark Ct

3 ba · 1,806 sqft · 0.033 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$380,000Apr 2006 $3,9792025 1 Name on Record Owner Occupied AssessorUpdated Aug 2026

Property Records in Nearby Streets