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For sale
    • $935,000

    518 Calvin Ln, Rockville, MD 20851

    4beds
    4,455sqft
    : 
    $5,722/mo
    Get pre-qualified
    Single Family Residence
    Built in 1953
    8,327 Square Feet Lot
    $-- Zestimate®
    $210/sqft
    $-- HOA

    What's special

    Gas fireplaceDramatic two-story foyerDedicated home officeDetached two-car garageHardwood floorsMarble backsplashGranite countertops
    Welcome to this rare and expansive 4,400+ sq ft home in the desirable Twinbrook neighborhood, offering an exceptional opportunity to own significantly more space than typically available in the area. Completely rebuilt in 2007 and thoughtfully updated, this move-in ready residence features three full levels above ground, an open and functional layout, and a private setting backing directly to parkland. The main level showcases hardwood floors, a dramatic two-story foyer, a dedicated home office, and generously sized living and dining spaces ideal for both everyday living and entertaining. The open-concept kitchen is the centerpiece of the home, complete with granite countertops, marble backsplash, a large center island with second sink and wine refrigerator (2022), and recent appliance updates (2024). The kitchen flows seamlessly into the family room with a gas fireplace and access to the backyard and patio. Upstairs, the spacious owner’s suite offers a true retreat with its own fireplace, dual walk-in closets, and a well-appointed bath with soaking tub and double shower. Additional two bedrooms are bright and well-sized, with a convenient upper-level laundry room. The top level provides a versatile fourth bedroom with a full bath and bar area—ideal for guests, a home gym, or entertainment. Recent updates include fresh interior paint in most rooms (2025), a new roof (2025), and exterior paint (2018). A detached two-car garage and manageable yard with recent landscaping add to the home’s appeal. Backing to parkland with a playground, tennis courts, and open green space, and within walking distance to Croydon Creek Nature Center, Glenview Mansion, and the F. Scott Fitzgerald Theatre, this home combines space, privacy, and convenience. Metro access via Washington Metro Red Line stations is just minutes away. A unique opportunity to own one of the largest homes in the neighborhood—offering space, flexibility, and value that is hard to find at this price point.
    85 days
    |
    472
    |
    23
    |

    Zillow last checked:

    Listing updated:

    Listed by:

    Leo Keenan 443-690-0572,

    Assist 2 Sell Buyers And Sellers 410-549-9555

    Source: Bright MLS,MLS#: MDMC2232562MLS Logo

      Facts & features

      Interior

      Bedrooms & bathrooms
      • Bedrooms: 4
      • Bathrooms: 4
      • Full bathrooms: 3
      • 1/2 bathrooms: 1
      • Main level bathrooms: 1
      Rooms
      • Room types: Living Room, Dining Room, Primary Bedroom, Bedroom 2, Bedroom 3, Bedroom 4, Kitchen, Family Room, Office
      Primary bedroom
      • Features: Flooring - Carpet, Fireplace - Gas, Attached Bathroom, Soaking Tub, Bathroom - Walk-In Shower, Double Sink, Walk-In Closet(s)
      • Level: Upper
      • Area: 306 Square Feet
      • Dimensions: 17 X 18
      Bedroom 2
      • Features: Flooring - Carpet, Attached Bathroom, Jack and Jill Bathroom
      • Level: Upper
      • Area: 288 Square Feet
      • Dimensions: 16 X 18
      Bedroom 3
      • Features: Flooring - Carpet
      • Level: Upper
      • Area: 192 Square Feet
      • Dimensions: 12 X 16
      Bedroom 4
      • Features: Attached Bathroom, Flooring - Carpet, Double Sink
      • Level: Upper
      • Area: 783 Square Feet
      • Dimensions: 27 X 29
      Dining room
      • Features: Flooring - HardWood, Chair Rail, Crown Molding
      • Level: Main
      • Area: 208 Square Feet
      • Dimensions: 13 X 16
      Family room
      • Features: Flooring - HardWood, Fireplace - Gas
      • Level: Main
      • Area: 342 Square Feet
      • Dimensions: 18 X 19
      Kitchen
      • Features: Granite Counters, Flooring - HardWood, Kitchen Island, Eat-in Kitchen, Kitchen - Gas Cooking
      • Level: Main
      • Area: 340 Square Feet
      • Dimensions: 17 X 20
      Living room
      • Features: Flooring - HardWood, Crown Molding
      • Level: Main
      • Area: 192 Square Feet
      • Dimensions: 12 X 16
      Office
      • Features: Flooring - HardWood
      • Level: Main
      • Area: 144 Square Feet
      • Dimensions: 12 X 12
      Heating
      • Forced Air, Natural Gas
      Cooling
      • Central Air, Ceiling Fan(s), Electric
      Appliances
      • Included: Built-In Range, Cooktop, Dishwasher, Disposal, Dryer, Exhaust Fan, Extra Refrigerator/Freezer, Oven/Range - Gas, Refrigerator, Stainless Steel Appliance(s), Washer, Electric Water Heater
      Features
      • Soaking Tub, Bathroom - Walk-In Shower, Breakfast Area, Ceiling Fan(s), Chair Railings, Crown Molding, Family Room Off Kitchen, Open Floorplan, Formal/Separate Dining Room, Eat-in Kitchen, Kitchen - Gourmet, Kitchen Island, Kitchen - Table Space, Pantry, Primary Bath(s), Recessed Lighting, Upgraded Countertops, Walk-In Closet(s), 2 Story Ceilings, 9'+ Ceilings, Dry Wall, High Ceilings
      • Flooring: Carpet, Ceramic Tile, Hardwood, Wood
      • Has basement: No
      • Number of fireplaces: 2
      • Fireplace features: Gas/Propane
      Interior area
      • Total structure area: 4,455
      • Total interior livable area: 4,455 sqft
      • Finished area above ground: 4,455
      • Finished area below ground: 0

      Property

      Parking
      • Total spaces: 2
      • Parking features: Garage Faces Front, Garage Door Opener, Detached, Driveway
      • Garage spaces: 2
      • Has uncovered spaces: Yes
      Accessibility
      • Accessibility features: None
      Features
      • Levels: Three
      • Stories: 3
      • Pool features: None
      • Has view: Yes
      • View description: Park/Greenbelt
      Lot
      • Size: 8,327 Square Feet
      • Features: Backs - Parkland, Cleared, Front Yard, Landscaped, Level, Premium, Private, Rear Yard, Wooded
      Details
      • Additional structures: Above Grade, Below Grade
      • Parcel number: 160400220550
      • Zoning: R60
      • Special conditions: Standard

      Construction

      Type & style
      • Home type: SingleFamily
      • Architectural style: Colonial
      • Property subtype: Single Family Residence
      Materials
      • Frame
      • Foundation: Crawl Space
      • Roof: Architectural Shingle
      Condition
      • New construction: No
      • Year built: 1953
      • Major remodel year: 2007

      Utilities & green energy

      • Sewer: Public Sewer
      • Water: Public

      Community & HOA

      Community
      • Subdivision: Twinbrook
      HOA
      • Has HOA: No
      Location
      • Region: Rockville
      • Municipality: City of Rockville

      Financial & listing details

      • Price per square foot: $210/sqft
      • Tax assessed value: $929,767
      • Annual tax amount: $13,185
      • Date on market: 5/7/2026
      • Listing agreement: Exclusive Right To Sell
      • Ownership: Fee Simple

        Estimated market value

        Not available

        Estimated sales range

        Not available

        Not available

        Price history

        DateEventPrice
        5/7/2026Listed for sale$935,000$210/sqft
        Source: Bright MLS #MDMC2232562 Report a problem
        5/4/2026Listing removed$935,000$210/sqft
        Source: Bright MLS #MDMC2210784 Report a problem
        4/23/2026Price change$935,000-1.5%$210/sqft
        Source: Bright MLS #MDMC2210784 Report a problem
        3/5/2026Price change$949,000-2.7%$213/sqft
        Source: Bright MLS #MDMC2210784 Report a problem
        1/8/2026Listed for sale$975,000+0.8%$219/sqft
        Source: Bright MLS #MDMC2210784 Report a problem
        12/12/2025Listing removed--
        Source: Owner Report a problem
        10/22/2025Listed for sale$966,900-2.9%$217/sqft
        Source: Owner Report a problem
        10/20/2025Listing removed$995,900$224/sqft
        Source: Long & Foster Broker Feed #MDMC2200712 Report a problem
        10/2/2025Price change$995,900-2.1%$224/sqft
        Source: Bright MLS #MDMC2200712 Report a problem
        9/25/2025Listed for sale$1,016,900+54.1%$228/sqft
        Source: Bright MLS #MDMC2200712 Report a problem
        1/23/2013Sold$660,000-5.6%$148/sqft
        Source: Public Record Report a problem
        11/11/2012Listed for sale$699,000$157/sqft
        Source: Long & Foster Real Estate #MC7962094 Report a problem
        10/5/2012Listing removed$699,000$157/sqft
        Source: Long & Foster Real Estate #MC7810608 Report a problem
        4/5/2012Listed for sale$699,000-3.6%$157/sqft
        Source: Long & Foster Real Estate #MC7810608 Report a problem
        12/14/2007Sold$725,000+113.9%$163/sqft
        Source: Public Record Report a problem
        9/30/2005Sold$339,000$76/sqft
        Source: Public Record Report a problem

        Public tax history

        YearProperty taxesTax assessment
        2025$12,493 +5.8%$929,767 +4.8%
        2024$11,811 +8.6%$887,133 +8.1%
        2023$10,877 +4.7%$820,500 +1.8%
        2022$10,392 +1.4%$805,833 +1.9%
        2021$10,249 +2.2%$791,167 +1.9%
        2020$10,029 +3.9%$776,500
        2019$9,651 -0.5%$776,500 +4.2%
        2018$9,704 +0.2%$744,900 +2.2%
        2017$9,686 +12.6%$729,100 +0.6%
        2016$8,599 $724,433 +0.6%
        2015$8,599 $719,767 +0.7%
        2014$8,599 $715,100
        2013-- $715,100
        2012-- $715,100 -0.5%
        2011-- $718,610
        2010-- $718,610 -6.8%
        2009-- $770,890 +105.8%
        2008-- $374,520 +16.1%
        2007-- $322,486 +19.2%
        2006-- $270,453 +23.8%
        2005-- $218,420 +16.4%
        2004-- $187,606
        2003-- $187,606 +48.9%
        2002-- $125,980
        2001-- $125,980
        Find assessor info on the county website

        Monthly payment

        Est. payment

        Payment breakdown

        Explore the cost of this home by adjusting the details. Changes won't be saved.
        All calculations are estimates and provided by Zillow, Inc. for informational purposes only. Actual amounts may vary.
        HOA fees may include property taxes on listings classified as Co-Ops. Contact the listing agent and/or owner for fee details.
        Mortgage interest rates are dependent on a number of factors, including credit score, down payment, and repayment length. Interest rate data provided by Zillow Group Marketplace, Inc. as of 1/1/1970 from various mortgage lenders with which we have lead or other similar arrangements; the Estimated Payment is an average of those rates.
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        Climate risks

        Neighborhood: Twinbrook

        Getting around

        40 / 100
        Car-Dependent
        42 / 100
        Some Transit
        42 / 100
        Somewhat Bikeable

        Nearby schools

        GreatSchools rating
        Schools provided by the listing agent
        • District: Montgomery County Public Schools

        Source: Bright MLS. This data may not be complete. We recommend contacting the local school district to confirm school assignments for this home.

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