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142 Riverside Avenue, Mastic Beach NY 11951
142 Riverside Avenue, Mastic Beach NY 11951
142 Riverside Avenue, Mastic Beach NY 11951
142 Riverside Avenue, Mastic Beach NY 11951
142 Riverside Avenue, Mastic Beach NY 11951
142 Riverside Avenue, Mastic Beach NY 11951
142 Riverside Avenue, Mastic Beach NY 11951
142 Riverside Avenue, Mastic Beach NY 11951
142 Riverside Avenue, Mastic Beach NY 11951
142 Riverside Avenue, Mastic Beach NY 11951
142 Riverside Avenue, Mastic Beach NY 11951
142 Riverside Avenue, Mastic Beach NY 11951
142 Riverside Avenue, Mastic Beach NY 11951
142 Riverside Avenue, Mastic Beach NY 11951
142 Riverside Avenue, Mastic Beach NY 11951
New York>Suffolk County>Mastic

142 Riverside AvenueMastic Beach, NY 11951

For Sale

$699,999

Smart Buyer Rebate $5,000

Discover classic Colonial elegance combined with comfortable, modern living in this spacious 4-bedroom, 3-bath 1-attached garage and 1- stand free garage home with a full basement set on more than a half-acre of beautifully landscaped grounds. Inside, enjoy bright, well-proportioned rooms filled with natural light and timeless architectural details. The layout flows easily from formal to casual spaces, making everyday living and hosting effortless. Three full baths add convenience and comfort.
Outside is a true private retreat: a resort-style backyard with mature plantings, manicured lawns, and multiple areas for dining, relaxing, and play. Whether you envision summer pool parties, quiet morning coffee, or large outdoor gatherings, this yard delivers. The generous lot also offers room for additions, a garden, or recreational amenities.
Don’t miss this rare opportunity to own a home that blends traditional charm, adaptable living space, and an exceptional outdoor environment.

Listed by George Gabriel

·

Coldwell Banker American Homes

·

631-588-9090

Listed by Rosann Romanelli

·

Coldwell Banker American Homes

Last updated June 14, 2026

·

Source: OneKey #1009138

Listing Facts

  • TypeSingle-family
  • NeighborhoodMastic
  • Bedrooms4
  • Bathrooms3
  • Days on Prevu12
  • Taxes$11,058/year
  • Size2,150 sqft
  • Price per sqft$326

Amenities

  • Dishwasher
  • Private Outdoor Space
  • Washer/Dryer
  • Air Conditioning
  • Parking
  • Swimming Pool

Location

Mortgage Calculator

Listing History

06/04/2026
Listed by Coldwell Banker American Homes
$699,999

Property Details for 142 Riverside Avenue

Exterior

Construction

  • Year Built: 1974
  • Architectural Style: Colonial
  • Construction Materials: Frame

Features

  • Fencing: Back Yard, Fenced
  • Patio And Porch Features: Deck
  • Pool Features: Above Ground
  • Pool Private: Yes

Measurements

  • Building Area Units: Square Feet
  • Lot Features: Back Yard, Landscaped, Private, Sprinklers In Front, Sprinklers In Rear
  • Lot Size Acres: 0.55
  • Lot Size Square Feet: 23,958

Financial

Taxes

  • Parcel Number: 0200-939-00-09-00-017-001
  • Tax Annual Amount: $11,058.00
  • Tax Assessed Value: $2,625.00
  • Tax Year: 2026

Interior

Features

  • Appliances: Dishwasher, Dryer, Microwave, Range, Refrigerator, Stainless Steel Appliance(s), Gas Water Heater
  • Fireplace: Yes
  • Flooring: Vinyl
  • Interior Features: Entrance Foyer, His And Hers Closets, Washer/Dryer Hookup

Measurements

  • Living Area: 2,150
  • Living Area Source: Public Records

Rooms

  • Basement: Finished
  • Has Basement: Yes
  • Bathrooms Full: 3
  • Bathrooms Total Integer: 3
  • Bedrooms Total: 4
  • Rooms Total: 9

Parking

Parking

  • Garage Spaces: 2
  • Garage: Yes
  • Parking Features: Driveway, Garage, Garage Door Opener, Off Street

Schools

Elementary School

  • Elementary School: Tangier Smith 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 Paca Middle School
  • Middle Or Junior School District: William Floyd

Utilities

Equipment

  • Cooling: Central Air
  • Heating: Baseboard, Oil
  • Sewer: Cesspool
  • Utilities: Cable Connected
  • Water Source: Public

Frequently Asked Questions

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

There are 4 bedrooms and 3 bathrooms in this single-family home at 142 Riverside Avenue.

What schools are nearby to 142 Riverside Avenue?

Nearby schools include the Tangier Smith Elementary School, William Paca Middle School, and William Floyd High School.

Does this single-family home have parking?

Yes, there are 2 parking spaces available for 142 Riverside Avenue.

What are the annual taxes for 142 Riverside Avenue?

Annual taxes for this single-family home are estimated at $11,058.

How does 142 Riverside Avenue compare to other single-family homes in Mastic?

This single-family home is listed 36% 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 2,150 sqft.

142 Riverside Avenue is a 4-bedroom, 3-bath single-family home for sale in Mastic Beach NY 11951. On Prevu for 12 days at $699,999. This home features 2,150 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 Tangier Smith Elementary School, William Paca Middle School, and William Floyd High School. Additional amenities include private outdoor space, dishwasher, air conditioning, parking, swimming pool, and washer/dryer. Browse 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.