Waterfront living with endless potential on Poospatuck Creek, offering direct access to the Forge River and beyond. This split-level home is all about location, views, and opportunity. The upper level features an open floor plan designed to capture the water from every angle, with three sliding glass doors that open to a sprawling upper deck, perfect for entertaining, relaxing, and soaking in the scenery.
Enjoy 100 feet of bulkhead and your own private dock, ideal for boating, kayaking, paddle boarding, or simply enjoying life on the water. Wake up to stunning sunrises and wind down with peaceful sunsets reflected across the creek. This setting delivers true waterfront serenity.
The home offers two additional rooms with flexible use, ideal for a home office, gym, game room, or creative space. Buyers may also choose to add wardrobes to use these rooms as additional sleeping areas.
The lower level includes exterior entrances, creating excellent potential for a guest suite or accessory apartment with proper permits. Whether you envision multigenerational living, rental income, or flexible work-from-home space, the layout supports a variety of possibilities
This home offers a fantastic opportunity for buyers ready to bring their vision and create a custom waterfront retreat tailored to their style. With an unbeatable waterfront setting, this is a rare chance to own property with direct access to the Forge River and the Great South Bay.
For sale
Price cut: $140K (1/27)
$549,000
13 Riverside Avenue, Mastic Beach, NY 11951
3beds
2,340sqft
Single Family Residence, Residential
Built in 1972
0.25 Acres Lot
$-- Zestimate®
$235/sqft
$-- HOA
What's special
Split-level homeUnbeatable waterfront setting
- 8 days |
- 963 |
- 38 |
Zillow last checked: 8 hours ago
Listing updated: January 31, 2026 at 10:09am
Listing by:
EXP Realty 888-276-0630,
Tina Jahrsdoerfer 631-365-4231,
Toni J. Flohr 516-901-6426,
EXP Realty
Source: OneKey® MLS,MLS#: 955402
Tour with a local agent
Facts & features
Interior
Bedrooms & bathrooms
- Bedrooms: 3
- Bathrooms: 3
- Full bathrooms: 3
Heating
- Baseboard, Hot Water, Oil
Cooling
- Wall/Window Unit(s)
Appliances
- Included: Gas Oven
- Laundry: Washer/Dryer Hookup
Features
- First Floor Bedroom, First Floor Full Bath, Eat-in Kitchen, Open Floorplan, Primary Bathroom
- Attic: Full,Pull Stairs
- Has fireplace: No
Interior area
- Total structure area: 2,340
- Total interior livable area: 2,340 sqft
Property
Parking
- Total spaces: 1
- Parking features: Driveway, Garage
- Garage spaces: 1
- Has uncovered spaces: Yes
Features
- Fencing: Back Yard,Fenced,Vinyl
- Has view: Yes
- View description: Water
- Has water view: Yes
- Water view: Water
- Waterfront features: Bulkhead, Creek, River Access, Water Access, Waterfront
- Frontage length: 100 Feet
Lot
- Size: 0.25 Acres
Details
- Parcel number: 0200940000500029000
- Special conditions: None
Construction
Type & style
- Home type: SingleFamily
- Property subtype: Single Family Residence, Residential
Materials
- Vinyl Siding
Condition
- Year built: 1972
Utilities & green energy
- Sewer: Cesspool
- Water: Public
- Utilities for property: Cable Available, Electricity Connected, Propane, Trash Collection Public, Water Connected
Community & HOA
HOA
- Has HOA: No
Location
- Region: Mastic Beach
Financial & listing details
- Price per square foot: $235/sqft
- Tax assessed value: $2,900
- Annual tax amount: $12,175
- Date on market: 1/27/2026
- Cumulative days on market: 8 days
- Listing agreement: Exclusive Right To Sell
- Electric utility on property: Yes
Estimated market value
Not available
Estimated sales range
Not available
Not available
Price history
Price history
| Date | Event | Price |
|---|---|---|
| 1/27/2026 | Price change | $549,000-20.3%$235/sqft |
Source: | ||
| 11/28/2024 | Price change | $689,000-5%$294/sqft |
Source: | ||
| 11/8/2024 | Listed for sale | $725,000+31.8%$310/sqft |
Source: | ||
| 9/18/2021 | Listing removed | -- |
Source: | ||
| 7/20/2021 | Pending sale | $550,000$235/sqft |
Source: | ||
Public tax history
Public tax history
| Year | Property taxes | Tax assessment |
|---|---|---|
| 2017 | $12,846 | $2,900 |
| 2016 | -- | $2,900 |
| 2015 | -- | $2,900 |
Find assessor info on the county website
BuyAbility℠ payment
Estimated monthly payment
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Neighborhood: 11951
Nearby schools
GreatSchools rating
- 6/10Nathaniel Woodhull Elementary SchoolGrades: K-5Distance: 1.2 mi
- 4/10William Floyd Middle SchoolGrades: 6-8Distance: 1.8 mi
- 3/10William Floyd High SchoolGrades: 9-12Distance: 1 mi
Schools provided by the listing agent
- Elementary: Tangier Smith Elementary School
- Middle: William Paca Middle School
- High: William Floyd High School
Source: OneKey® 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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