13 Riverside Ave Mastic Beach, NY 11951
Estimated payment $3,992/month
Total Views
86,840
3
Beds
3
Baths
2,340
Sq Ft
$235
Price per Sq Ft
Highlights
- Water Views
- Home fronts a creek
- Main Floor Bedroom
- River Access
- Open Floorplan
- Eat-In Kitchen
About This Home
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.
Listing Agent
EXP Realty Brokerage Phone: 888-276-0630 License #10401262570 Listed on: 01/27/2026
Home Details
Home Type
- Single Family
Est. Annual Taxes
- $12,175
Year Built
- Built in 1972
Lot Details
- 10,890 Sq Ft Lot
- Home fronts a creek
- Back Yard Fenced
Parking
- 1 Car Garage
- Driveway
Home Design
- Split Level Home
- Vinyl Siding
Interior Spaces
- 2,340 Sq Ft Home
- Open Floorplan
- Water Views
- Washer and Dryer Hookup
Kitchen
- Eat-In Kitchen
- Gas Oven
Bedrooms and Bathrooms
- 3 Bedrooms
- Main Floor Bedroom
- En-Suite Primary Bedroom
- Bathroom on Main Level
- 3 Full Bathrooms
Outdoor Features
- River Access
Schools
- Tangier Smith Elementary School
- William Paca Middle School
- William Floyd High School
Utilities
- Cooling System Mounted To A Wall/Window
- Baseboard Heating
- Hot Water Heating System
- Heating System Uses Oil
- Propane
- Cesspool
- Cable TV Available
Listing and Financial Details
- Assessor Parcel Number 0200-940-00-05-00-029-000
Map
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Home Values in the Area
Average Home Value in this Area
Tax History
| Year | Tax Paid | Tax Assessment Tax Assessment Total Assessment is a certain percentage of the fair market value that is determined by local assessors to be the total taxable value of land and additions on the property. | Land | Improvement |
|---|---|---|---|---|
| 2025 | $11,514 | $2,900 | $150 | $2,750 |
| 2024 | $11,514 | $2,900 | $150 | $2,750 |
| 2023 | $11,514 | $2,900 | $150 | $2,750 |
| 2022 | $12,846 | $2,900 | $150 | $2,750 |
| 2021 | $12,846 | $2,900 | $150 | $2,750 |
| 2020 | $13,123 | $2,900 | $150 | $2,750 |
| 2019 | $13,123 | $0 | $0 | $0 |
| 2018 | -- | $2,900 | $150 | $2,750 |
Source: Public Records
Property History
| Date | Event | Price | List to Sale | Price per Sq Ft |
|---|---|---|---|---|
| 01/27/2026 01/27/26 | For Sale | $549,000 | -20.3% | $235 / Sq Ft |
| 12/03/2024 12/03/24 | For Sale | $689,000 | 0.0% | -- |
| 12/02/2024 12/02/24 | Off Market | $689,000 | -- | -- |
| 11/28/2024 11/28/24 | Price Changed | $689,000 | -5.0% | -- |
| 11/08/2024 11/08/24 | For Sale | $725,000 | -- | -- |
Source: OneKey® MLS
Purchase History
We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.
| Date | Type | Sale Price | Title Company |
|---|---|---|---|
| Warranty Deed | -- | None Available | |
| Warranty Deed | -- | None Available | |
| Deed | -- | None Available | |
| Deed | -- | None Available | |
| Bargain Sale Deed | $210,000 | None Available | |
| Bargain Sale Deed | $210,000 | None Available |
Source: Public Records
Mortgage History
We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.
| Date | Status | Loan Amount | Loan Type |
|---|---|---|---|
| Previous Owner | $477,000 | New Conventional | |
| Previous Owner | $150,000 | New Conventional |
Source: Public Records
About the Listing Agent
Long Island native and licensed since 2014, I'm your go-to Realtor for all things Suffolk County. I pride myself on clear communication and an educational approach, ensuring you're informed every step of the way. Continually elevating my market expertise, I offer top-notch guidance for your real estate journey.
It's more than transactions; it's about building lifelong relationships. Join my real estate family and gain a national network of Realtors, ready to assist in any relocation
Tina's Other Listings
Source: OneKey® MLS
MLS Number: 955402
APN: 0200-940-00-05-00-029-000
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The data relating to real estate for sale or lease on this web site comes in part from OneKey® MLS. Real estate listings held by brokerage firms other than Ten-X are marked with the OneKey® MLS logo or an abbreviated logo and detailed information about them includes the name of the listing broker.
Based on information submitted to the MLS GRID. All data is obtained from various sources and may not have been verified by broker or MLS GRID. Supplied Open House Information is subject to change without notice. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information. Some IDX listings have been excluded from this website. IDX information is provided exclusively for personal, non-commercial use, and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing.
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Based on information submitted to the MLS GRID
Listings courtesy of OneKey® MLS as distributed by MLS GRID
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