4 Riverside Avenue
Mastic Beach, NY, 11951 $ 949,999
Bedrooms3 Baths3.0 Sq 1,560 Monthly Estimate*
$ 5,849
for $949,999 with 3 bedrooms and 3 full baths. This 1,560 square foot home was built in 1955 on a lot size of 1.02.
Rare opportunity in Mastic Beach. Fully renovated Cape on a private 1+ acre corner lot with river views, modern upgrades throughout, and flexible living space including a possible 4th bedroom or office. Welcome to 4 Riverside Avenue, a beautifully updated home that offers the perfect combination of space, privacy, and modern comfort. This property stands out with its oversized lot, thoughtful renovation, and peaceful natural surroundings. The home features 3 spacious bedrooms, a potential 4th bedroom or office space, and 3 full bathrooms, providing flexibility for today's lifestyle. Natural light fills the home, highlighting the neutral color palette and hardwood floors throughout, creating a warm and inviting atmosphere from the moment you enter. The fully renovated kitchen is designed for both everyday living and entertaining, featuring brand new stainless steel appliances, granite countertops, and custom cabinetry. The bathrooms have been updated with modern tile finishes, adding a fresh and clean design throughout the home. Major upgrades include a new roof (2026), new electric, new fencing, and updated landscaping. The elegant Mountain Black metal roof adds both durability and striking curb appeal. The spacious basement with walkout access provides excellent potential for additional living space. With areas ideal for a bar, cinema room, recreation space, or future finishing, the lower level offers incredible versatility. Outside, the property truly shines. Sitting on over an acre of land, the home features new trees, fresh landscaping, a fenced front yard, and a fenced backyard, creating a peaceful outdoor setting with plenty of room to relax, entertain, or expand. This home offers convenient access to nearby parks, waterfront areas, shopping, and local amenities. If you are looking for a fully renovated, move in ready home with space, privacy, and modern upgrades on a rare oversized lot with river views, this is one you will want to see in person.
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FeaturesInteriorInterior Amenities First Floor Bedroom First Floor Full Bath Chefs Kitchen Crown Molding Formal Dining Open Floorplan Primary Bathroom Walk-In Closet(s)
Basement Full Walk-Out Access
Flooring Hardwood
Fireplace Features Wood Burning
Basement Features Full Walk-Out Access
Basement (Y/N) Y
Window Features Bay Window(s) Double Pane Windows ENERGY STAR Qualified Windows New Windows Screens
Fireplace Y/N Y
Half Baths 0
Total Bedrooms 3
Total Baths 3
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GeneralSewer Cesspool
Heating Electric ENERGY STAR Qualified Equipment
Cooling Electric ENERGY STAR Qualified Equipment Multi Units Wall/Window Unit(s) Zoned
Utilities Cable Available Cable Connected Electricity Available Electricity Connected See Remarks Trash Collection Public Water Available Water Connected
Appliances Dishwasher Electric Range Electric Water Heater ENERGY STAR Qualified Appliances Microwave
Architectural Style Cape Cod
Construction Materials Brick
Year Built 1955
View Water
Property Subtype Single Family Residence
Tax Year 2025
Parcel Number 0200-940-00-08-00-004-000
Waterfront Features River Access River Front
County Suffolk County
Property Type Residential
HOA N
Garage Y/N N
Total Rooms 10
Full Baths 3
High School William Floyd High School
City Brookhaven
Senior Community Y/N N
High School District William Floyd
Carport Y/N N
Elementary School Nathaniel Woodhull Elementary School
Property Attached Y/N N
Tax Annual Amount 8602.14
Showing Instructions Use ShowingTime or call LA at 631-672-5471
Middle/Junior High School William Floyd Middle School
Property Condition Updated/Remodeled
Building Area Units Square Feet
Standard Status Active
Middle/Junior School District William Floyd
Elementary School District William Floyd
Tax Assessed Value 2050
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ExteriorParking Features Driveway Oversized Private Driveway Oversized Private
Water Source Public
Building Area Total 1560
Waterfront Y/N Y
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* Excluded FeaturesList ByRudy RodriguezListing Agent
Signature Premier PropertiesBroker
Affordability Calculator
- Monthly Principal & Interest
- $5,849
- Monthly Property Taxes
- $717
- Monthly Home Insurance
- --
Default based on a 30-year fixed rate of 6.25% with 20% down. The estimated payment is offered for convenience and is not an offer of credit. Due to market fluctuations, interest rates are subject to change at any time and without notice. Your individual rate may vary. Rates may differ for FHA, VA or jumbo loans.
Learn more about how to save NearbySingle family listings in Mastic Beach, NY
Average List Price $501,752
Percent of Sale Price 47%
About Mastic Beach, NY 13,666 Population
7% Since 2002
$ 64,970 Median Income
37.54 Median Age
29% Households with Children
Trends Information provided by ATTOM Data Solutions.
4099900 Elementary School
4100160 Middle School
William Floyd High School High School
Pricing History| Date | Price | Price Change | Description |
|---|
| 3/4/2026 | $949,999 | | Listed Price |