2. 8429 Fox Run Potomac MD
8429 Fox Run Potomac MD

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8429 Fox Run Potomac, MD

8429 Fox Run Potomac, MD 20854 was built in 1968 and last sold for $527,000. The property has a lot size of 10,927 Sq Ft lot and is listed as a Single Family. The property is currently not for sale. Current estimates place the value near 1,258,000, reflecting a 0% change over the past year, with available bedroom details, 2.5 baths, and approximately 3,676 sq ft of living space. If you are looking to buy or rent a property, use USPhoneBook's property database to avoid rental scams, understand tax liabilities, and get a sense of the property's value over time. You can also check out the neighborhood section and see nearby homes, last sold for prices, tax records and more.
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Public Facts

$527,000
Last sold Dec 17, 2025
2.5
Baths
3,676
Sqft
Off Market
$1,258,000 estimated value
Built in 1968
$342/sqft
10,927 lot sqft
$50 HOA fees

Property characteristics

Property type
Residential
Zoning type
Single Family
APN
10-00886113
Parking
2
Subdivision
Fox Hills Of Potomac
Heating
Yes
Cooling
Central
Fireplaces
1
Stories
2

Property History

Over the last 12 months, the sales price of 8429 Fox Run Potomac, MD 20854 has increased by 0%, and the tax increased by 3%.

Price History

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Year Price Price/Sq Ft
2026 $ 1,261,000 0 % $ 343
2025 $ 1,263,000 -5 % $ 344
2024 $ 1,340,000 11 % $ 365
2023 $ 1,199,000 2 % $ 326
2022 $ 1,175,000 18 % $ 320
2021 $ 990,000 ---- $ 269

Tax History

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Year Taxes Assesments
2025 $ 12,059 3 % $ 1,061,200
2024 $ 11,706 16 % $ 977,967
2023 $ 10,012 15 % $ 894,733
2022 $ 8,671 -48 % $ 811,500
2021 $ 16,823 ---- $ 793,233
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Owner

Karen Monsein Karen A Monsein , Age 64

Lives at 8429 Fox Run, Potomac, MD 20854-2502
Relatives: Douglas Monsein, Brett Monsein, Edward Aaronson, Jackie Aaronson, Janet Aaronson, Jenna Monsein, Jeffrey Monsein, Judith By, Lauren Miller
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People Living at 8429 Fox Run Potomac, MD

Karen Monsein Karen A Monsein , Age 64

Lives at 8429 Fox Run, Potomac, MD 20854-2502 Potomac MD 20854 8429 Fox Run
Prior addresses: 8429 Fox Run, Rockville, MD 20854-2502 Rockville MD 20854 8429 Fox Run 108 Argosy Dr, Gaithersburg, MD 20878-2663 Gaithersburg MD 20878 108 Argosy Dr 5603 Whitney Mill Way, Rockville, MD 20852-3141 Rockville MD 20852 5603 Whitney Mill Way
Relatives: Douglas Monsein, Brett Monsein, Edward Aaronson, Jackie Aaronson, Janet Aaronson, Jenna Monsein, Jeffrey Monsein, Judith By, Lauren Miller
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Kirsten Appleton Kirsten Appleton , Age 34

Lives at 8429 Fox Run, Potomac, MD 20854-2502 Potomac MD 20854 8429 Fox Run
Prior addresses: 5906 Roosevelt St, Bethesda, MD 20817-3830 Bethesda MD 20817 5906 Roosevelt St
Relatives: Arthur Appleton, Daniel Appleton, Karen Appleton, Stephen Appleton, Elisabeth Donegan, Kara Sands, Maryann Drimer, Maurice Drimer, Ronnie Drimer
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Brett Monsein Brett A Monsein , Age 34

Lives at 8429 Fox Run, Potomac, MD 20854-2502 Potomac MD 20854 8429 Fox Run
Prior addresses: 5906 Roosevelt St, Bethesda, MD 20817-3830 Bethesda MD 20817 5906 Roosevelt St 910 M St NW, Apt 202, Washington, DC 20001-6316 Washington DC 20001 910 M St NW, Apt 202
Relatives: Douglas Monsein, Jenna Monsein, Karen Monsein, Edward Aaronson, Jackie Aaronson, Janet Aaronson, Jeffrey Monsein, Judith By, Lauren Miller
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Douglas Monsein Douglas J Monsein , Age 65

Lives at 8429 Fox Run, Potomac, MD 20854-2502 Potomac MD 20854 8429 Fox Run
Prior addresses: 8429 Fox Run, Rockville, MD 20854-2502 Rockville MD 20854 8429 Fox Run 208 Argosy Dr, Gaithersburg, MD 20878-2667 Gaithersburg MD 20878 208 Argosy Dr 108 Argosy Dr, Gaithersburg, MD 20878-2663 Gaithersburg MD 20878 108 Argosy Dr
Relatives: Karen Monsein, Brett Monsein, Jeffrey Monsein, Jenna Monsein, Judith By, Lauren Miller, Lauren Monsein, Sheldon Monsein, Barbara Franzen
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Jenna Monsein Jenna Arin Monsein , Age 37

Lives at 4900 Moorland Ln, Apt 225, Bethesda, MD 20814-6296 Bethesda MD 20814 4900 Moorland Ln, Apt 225
Prior addresses: 1300 N St NW, Apt 210, Washington, DC 20005-3689 Washington DC 20005 1300 N St NW, Apt 210 1200 14th St NW, Apt 116, Washington, DC 20005-7601 Washington DC 20005 1200 14th St NW, Apt 116
Relatives: Brett Monsein, Douglas Monsein, Karen Monsein, Edward Aaronson, Jackie Aaronson, Janet Aaronson, Jeffrey Monsein, Judith By, Lauren Miller
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Alba Johnson Alba I Johnson , Age 103

Lives at 8429 Fox Run, Rockville, MD 20854-2502 Rockville MD 20854 8429 Fox Run
Prior addresses: Po Box 1969, New London, NH 03257-1969 New London NH 03257 Po Box 1969
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Karen Monsein Karen Monsein

Lives at 8429 Fox RUN, Potomac, MD 20854-2502 Potomac MD 20854 8429 Fox RUN
Prior addresses:
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Allyson Taylor Allyson L Taylor , Age 51

Lives at 5806 Ipswich Rd, Bethesda, MD 20814-1808 Bethesda MD 20814 5806 Ipswich Rd
Prior addresses: 8429 Fox RUN, Potomac, MD 20854-2502 Potomac MD 20854 8429 Fox RUN 5427 Nibud Ct, Rockville, MD 20852-4666 Rockville MD 20852 5427 Nibud Ct
Relatives: Alain Taylor, Arnold R, Geoffrey Leven, Jennifer Leven, Kattie Taylor, Mary Taylor, Scott Taylor, Sharon Propper, Sheila Leven
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Kent Marquis Kent Thomas Marquis , Age 56

Lives at 4514 Maple Ave, Bethesda, MD 20814-4735 Bethesda MD 20814 4514 Maple Ave
Prior addresses: 8429 Fox Run, Potomac, MD 20854-2502 Potomac MD 20854 8429 Fox Run
Relatives: Deborah Naida, Kristie Marquis, Teresa Markowski, Alexander Markowski, Allen Forrest, Christopher Hoagland, Deborah Hernandez, Eric Gorny, Faye Forrest
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Chris Kotka Chris Allen Kotka , Age 49

Lives at 10344 SW Barber St, Wilsonville, OR 97070-9305 Wilsonville OR 97070 10344 SW Barber St
Prior addresses: 52259 SE Tyler St, Scappoose, OR 97056-3434 Scappoose OR 97056 52259 SE Tyler St 33803 NE Kern Ct, Scappoose, OR 97056-3562 Scappoose OR 97056 33803 NE Kern Ct
Relatives: Gregory Kotka, Jeffrey Kotka, Nicole Greiwe, Ranae Kotka, Brent Greiwe, Duncan Ackley, Jeffrey Ackley, Julia Lo, Laura Libby
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Neighbors

8501 Fox Run
Potomac, MD
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8425 Fox Run
Potomac, MD
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8500 Tuckerman Ln
Potomac, MD
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8504 Tuckerman Ln
Potomac, MD
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FAQs

Who lives at 8429 Fox Run, Potomac, MD 20854?
According to our records, the current person living in 8429 Fox Run is Karen Monsein.
Is this property currently for sale?
The property is not for sale and last sold for $527,000 on Dec 17, 2025. Use USPhoneBook to review nearby listings or compare similar homes in the area.
What is the estimated value of this property?
The estimated value is $1,258,000, reflecting a 0% change over the past year. You can explore price history and tax records to see how the value has changed over time.
How big is this property?
It features approximately 3,676 sq ft of living space on a 10,927 sq ft lot, built in 1968 and classified as a Single Family.
What nearby properties can I compare this to?
Nearby homes include 8501 Fox Run, 8425 Fox Run, and 8500 Tuckerman Ln, each with its own property report to help compare size, value, and residents.