Prevu by reAlpha
BuySellBlogBrowse Listings

4 Riverside AvenueMastic Beach, NY 11951

For Sale

$949,999

Smart Buyer Rebate $9,500

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.

Listed by Rudy Rodriguez

·

Signature Premier Properties

·

631-585-8400

Last updated March 15, 2026

·

Source: OneKey #967520

Listing Facts

  • TypeSingle-family
  • NeighborhoodMastic
  • Bedrooms3
  • Bathrooms3
  • Days on Prevu12
  • Taxes$8,602.14/year
  • Size1,560 sqft
  • Price per sqft$609

Amenities

  • Dishwasher
  • Parking

Location

Mortgage Calculator

Listing History

03/04/2026
Listed by Signature Premier Properties
$949,999

Property Details for 4 Riverside Avenue

Exterior

Construction

  • Property Condition: Updated/Remodeled
  • Window Features: Bay Window(s), Double Pane Windows, ENERGY STAR Qualified Windows, New Windows, Screens
  • Year Built: 1955
  • Architectural Style: Cape Cod
  • Construction Materials: Brick

Features

  • View: Water
  • Waterfront Features: River Access, River Front
  • Waterfront: Yes

Measurements

  • Building Area Total: 1,560
  • Building Area Units: Square Feet
  • Lot Size Acres: 1.02
  • Lot Size Square Feet: 44,431

Financial

Taxes

  • Parcel Number: 0200-940-00-08-00-004-000
  • Tax Annual Amount: $8,602.14
  • Tax Assessed Value: $2,050.00
  • Tax Year: 2025

Interior

Features

  • Appliances: Dishwasher, Electric Range, Electric Water Heater, ENERGY STAR Qualified Appliances, Microwave
  • Fireplace Features: Wood Burning
  • Fireplace: Yes
  • Flooring: Hardwood
  • Interior Features: First Floor Bedroom, First Floor Full Bath, Chefs Kitchen, Crown Molding, Formal Dining, Open Floorplan, Primary Bathroom, Walk-In Closet(s)

Measurements

  • Living Area: 1,560
  • Living Area Source: Other

Rooms

  • Basement: Full, Walk-Out Access
  • Has Basement: Yes
  • Bathrooms Full: 3
  • Bathrooms Total Integer: 3
  • Bedrooms Total: 3
  • Rooms Total: 10

Parking

Parking

  • Parking Features: Driveway, Oversized, Private

Schools

Elementary School

  • Elementary School: Nathaniel Woodhull Elementary School
  • Elementary School District: William Floyd

High School

  • High School: William Floyd High School
  • High School District: William Floyd

Middle or Junior School

  • Middle Or Junior School: William Floyd Middle School
  • Middle Or Junior School District: William Floyd

Utilities

Equipment

  • Cooling: Electric, ENERGY STAR Qualified Equipment, Multi Units, Wall/Window Unit(s), Zoned
  • Heating: Electric, ENERGY STAR Qualified Equipment
  • Laundry Features: Laundry Room
  • Sewer: Cesspool
  • Utilities: Cable Available, Cable Connected, Electricity Available, Electricity Connected, See Remarks, Trash Collection Public, Water Available, Water Connected
  • Water Source: Public

Frequently Asked Questions

How many bedrooms and bathrooms does this single-family home have?

There are 3 bedrooms and 3 bathrooms in this single-family home at 4 Riverside Avenue.

What schools are nearby to 4 Riverside Avenue?

Nearby schools include the Nathaniel Woodhull Elementary School, William Floyd Middle School, and William Floyd High School.

What are the annual taxes for 4 Riverside Avenue?

Annual taxes for this single-family home are estimated at $8,602.

How does 4 Riverside Avenue compare to other single-family homes in Mastic?

This single-family home is listed 85% above the average price for single-family homes in Mastic and has been on the market for 83 less days than the typical home in this area.

What is the square footage on this single-family home?

According to the MLS, this listing is 1,560 sqft.

4 Riverside Avenue is a 3-bedroom, 3-bath single-family home for sale in Mastic Beach NY 11951. On Prevu for 12 days at $949,999. This home features 1,560 square feet of living space, located in Mastic. The median listing price for single-family homes in this area is $499,990. Nearby schools include Nathaniel Woodhull Elementary School, William Floyd Middle School, and William Floyd High School. Property amenities include dishwasher and parking. Explore more single-family home listings in Suffolk County.

The data relating to real estate for sale on this website comes in part from the IDX Program of OneKey™ MLS. The source of the displayed data is either the property owner or public record provided by non-governmental third parties. It is believed to be reliable but not guaranteed. This information is provided exclusively for consumers’ personal, non-commercial use. Information Copyright 2026, OneKey™ MLS. All Rights Reserved.

Full MLS Disclaimers

Rebate estimate is indicative only and based on listing price and estimated buyer's agent commission paid by owner, if applicable. Final rebates are subject to Terms of Use and may vary due to final negotiated transaction terms.