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Sold for $2,525,000
    • $2,525,000

    21 Flagg Ave, Montauk, NY 11954

    3beds
    1,400sqft
    Single Family Residence
    Built in 1965
    7,405 Square Feet Lot
    $2,612,200 Zestimate®
    $1,804/sqft
    $6,984 Estimated rent

    Home value

    $2,612,200

    $2.35M - $2.90M

    $6,984/mo

    Zestimate® history
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    What's special

    Private fenced-in yardExpansive glass wallsFront deckCozy bedroomsBack patioSleek stainless steel appliancesSteps from the ocean
    This stylish and sunlit beach retreat is located in the coveted Ditch Plains neighborhood-just steps from the ocean and one of Montauk's most iconic surf spots. With three cozy bedrooms and two full bathrooms, the home is designed for a relaxed coastal lifestyle. The fully equipped kitchen features sleek stainless steel appliances, and the open living room offers a bright, inviting atmosphere with expansive glass walls and a fireplace. In 2025, the home underwent significant upgrades, including a new roof, new skylights, upgraded insulation, a new Bilco door, and improvements to the foundation and crawl space-along with the installation of a dehumidifier system for enhanced comfort and efficiency. After a day at the beach, rinse off in the outdoor shower, then unwind in the private, fenced-in yard-perfect for lounging or outdoor games. A front deck and back patio provide ideal spaces to soak up the sun or enjoy meals al fresco. And with the beach just a short stroll away, there's no need to worry about parking-simply walk out and embrace the Ditch Plains surf and sand.

    Zillow last checked:

    Source: Out East,MLS#: 390182

    Facts & features

    Interior

    Bedrooms & bathrooms
    • Bedrooms: 3
    • Bathrooms: 2
    • Full bathrooms: 2
    Features
    • Basement: Yes
    • Has fireplace: Yes
    Interior area
    • Total structure area: 1,400
    • Total interior livable area: 1,400 sqft

    Property

    Parking
    • Parking features: None
    Features
    • Stories: 1
    Lot
    • Size: 7,405 Square Feet
    Details
    • Parcel number: 0300030000400006000

    Construction

    Type & style
    • Home type: SingleFamily
    • Property subtype: Single Family Residence
    Condition
    • New construction: No
    • Year built: 1965

    Community & HOA

    Location
    • Region: Montauk

    Financial & listing details

    • Price per square foot: $1,804/sqft
    • Tax assessed value: $4,500
    • Date on market: 7/25/2025
    • Lease term: Contact For Details

    Price history

    DateEventPrice
    11/6/2025Sold$2,525,000+1.4%$1,804/sqft
    Source: Agent Provided Report a problem
    9/12/2025Pending sale$2,490,000$1,779/sqft
    Source: Out East #390182 Report a problem
    7/25/2025Listed for sale$2,490,000+8.3%$1,779/sqft
    Source: Out East #390182 Report a problem
    7/25/2025Listing removed$21,000$15/sqft
    Source: Zillow Rentals Report a problem
    6/6/2025Listed for rent$21,000$15/sqft
    Source: Zillow Rentals Report a problem
    5/25/2024Listing removed--
    Source: Zillow Rentals Report a problem
    4/18/2024Listed for rent$21,000$15/sqft
    Source: Zillow Rentals Report a problem
    1/1/2024Listing removed--
    Source: Zillow Rentals Report a problem
    9/7/2023Sold$2,300,000-7.8%$1,643/sqft
    Source: Public Record Report a problem
    8/10/2023Listed for rent$21,000$15/sqft
    Source: Zillow Rentals Report a problem
    6/21/2023Pending sale$2,495,000$1,782/sqft
    Source: Out East #373941 Report a problem
    6/10/2023Listed for sale$2,495,000+178.8%$1,782/sqft
    Source: Out East #373941 Report a problem
    8/16/2013Sold$895,000+2.3%$639/sqft
    Source: Public Record Report a problem
    4/12/2013Listed for sale$875,000+56.3%$625/sqft
    Source: Listhub #3957062 Report a problem
    9/28/2002Sold$560,000+229.4%$400/sqft
    Source: Public Record Report a problem
    10/15/1997Sold$170,000$121/sqft
    Source: Public Record Report a problem

    Public tax history

    YearProperty taxesTax assessment
    2025-- $4,500
    2024-- $4,500
    2023-- $4,500
    2022-- $4,500
    2021-- $4,500
    2020-- $4,500
    2019-- $4,500
    2018-- $4,500
    2017$4,367 $4,500
    2016-- $4,500
    2015-- $4,500
    2014-- $4,500
    2013-- $4,500
    2012-- $4,500
    2011-- $4,500
    2007$3,390 +16.4%$4,500
    2005$2,912 +4%$4,500
    2004$2,799 -0.3%$4,500
    2003$2,807 +2.3%$4,500
    2002$2,745 $4,500
    Find assessor info on the county website

    Neighborhood: 11954

    Nearby schools

    GreatSchools rating
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    Estimated market value
    $2,612,200
    Get a cash offer in 3 minutes
    Find out how much your home could sell for in as little as 3 minutes with a no-obligation cash offer.
    Estimated market value
    $2,612,200

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